Database Users

[Q] Note 4 SM-N910S (SK Telecom) issues. Need solution!

Hi all,
I am a bit new to this forum. So my apologies for any tips that i have not known yet
I got a note 4 from SK telecom KR (SM-N910S) unlocked verion running Octa core version. There are 3 issues currently exist on my phone. I am living in Australia btw.
1 : Every time the phone start up, it will ask me whether i want to enable networking or not and talking about roaming ??
2 : Sometimes MMS can not be sent, retry few time and its ok ?
3 : The networking on SM-N910S has a big issue for me, that model only has 2 kinds of network LTE/3G mode or 3G Only mode, on AU version we have GSM/WCDMA/3G/LTE etc so it look like i am missing WCDMA and 2G networks
My question is :
* How can i access the hidden menu for Note 4, i know there is a hidden menu somewhere on that phone allow me to change network mode
* Can i flash my phone with AU firmware to remove roaming message and other SK's stuffs. ??
I can list some of my phone info here
Made in Korea
Date 20140926
CSC Code : SKC
Frimware: SKC
Active CSC: SKC
Build Number: KTU84P.N910SKSU1ANJ2
Android 4.4.4
Harware: Univeral5433
Thanks

I have got the same exact problems ! with my N910S
I flashed another rom it fixed some issues but i got some new issues with the new rom !
but only lil problems nothing major for example the calendar will have some additional chines calendar and the phone log wont show names if the number includes +61*****
I tired to post the rom but i have to reach 10 posts in order for me to add a link to it ! so i will probably post it by tonight

Su1i said:
I have got the same exact problems ! with my N910S
I flashed another rom it fixed some issues but i got some new issues with the new rom !
but only lil problems nothing major for example the calendar will have some additional chines calendar and the phone log wont show names if the number includes +61*****
I tired to post the rom but i have to reach 10 posts in order for me to add a link to it ! so i will probably post it by tonight
Click to expand...
Click to collapse
How can you enable WCDMA and 2G ?. None of the known method work for me,

henryvu said:
How can you enable WCDMA and 2G ?. None of the known method work for me,
Click to expand...
Click to collapse
yeah it has a "Network Mode" option which gives u WCDMA only or GSM only or Auto or WCSMA AND LTE AND GSM
I posted the link under this thread "ROM for N910S finally" I think its wayyyyyy better than the stock rom with all these Korean apps and widgets

Which tools u use and steps taken . I want to follow exactly what u did . Don't want bricking my phone

henryvu said:
How can i access the hidden menu for Note 4, i know there is a hidden menu somewhere on that phone allow me to change network mode
Thanks
Click to expand...
Click to collapse
If you have root, just open Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > scroll down to *#27663368378# for Service Main Menu or *#197328640# for Debug Screen. Tap and select "Launch 0' to launch.
If you don't have root, open Dialer, enter *#0011#, Menu > Back item (not Back key), Menu > Key Input > Q0, wait some seconds...

app > Menu > 'Secret Codes' > scroll down to *#27663368378# for Service Main Menu or *#197328640# for Debug Screen. Tap and select "Launch 0' to launch.
If you don't have root, open Dialer, enter *#0011#, Menu > Back item (not Back key), Menu > Key Input > Q0, wait some seconds...[/QUOTE]
Not working. I tired both 0000 and q0.

any luck
hi any luck with the rom

Hidden Menu for N910S SK Telecom
i use n910s sk telecom too and get frustated how to connect to lte band 8, already set to lte preferred and still the icon shows me 3g.
but then i found the solution from xda developer, i forgot the links but i take screenshot of it.
now i can connect to my lte network and explore my n910s network by entering secret code for sk telecom.
NB: you don't have to root your n910s to explore this menu.
here's the screenshot:

SKT Secret Menu
Has anyone know to explain more settings found in SKT Secret Menu? There are many setting there...

Entry point to Hidden Menu for N910S/K/L
For SM-N910S/K/L model, please following these steps.
1. Open your 'Phone' and switch it to 'Keypad'.
2. Type '319712358' directly (do not add any prefix or suffix like *#*#, just type it directly...).
3. Now you can see the Hidden Menu.
Please enter your password:
SM-N910S: 996412
SM-N910K: 774632
SM-N910L: 0821
4. After you in, go Network Setting -->Network mode to change LTE/WCDMA/GSM band.
Screenshots:
I have tested it on my SM-N910S and it works.
Model number: SM-N910S
Android Version: 5.0.1
Baseband version: N910SKSU0BOC2
Build number: LRX22C.N910SKSU1BOC3

Not working
Hi,
For me is not working. I did that change, I have LTE connectivity (not 4g as I have on my note 3) but now I can't use the phone, only Internet. Any idee? I'm on Vodafone Romania.

illeradu said:
Hi,
For me is not working. I did that change, I have LTE connectivity (not 4g as I have on my note 3) but now I can't use the phone, only Internet. Any idee? I'm on Vodafone Romania.
Click to expand...
Click to collapse
4G and LTE is just preference in naming. If you choose 'LTE' option without 'preferred', it will fail to fallback to 3G to make a phone call. Different story if your carrier has VoLTE

[Q] Note 4 SM-N910S (SK Telecom) issues. Need solution
I am also using N910S Note 4 full of SK Telecom "features". One of them is I can't enable data roaming.
ANyone found a solution to this?

note 4 sk telecome
hi. can help me?
my phone looks like....

Thanks soulkun, its working

soulkun said:
For SM-N910S/K/L model, please following these steps.
1. Open your 'Phone' and switch it to 'Keypad'.
2. Type '319712358' directly (do not add any prefix or suffix like *#*#, just type it directly...).
3. Now you can see the Hidden Menu.
Please enter your password:
SM-N910S: 996412
SM-N910K: 774632
SM-N910L: 0821
4. After you in, go Network Setting -->Network mode to change LTE/WCDMA/GSM band.
Screenshots:
I have tested it on my SM-N910S and it works.
Model number: SM-N910S
Android Version: 5.0.1
Baseband version: N910SKSU0BOC2
Build number: LRX22C.N910SKSU1BOC3
Click to expand...
Click to collapse
its worked on my 910S, really helpful.. thanks bro

chouzny said:
its worked on my 910S, really helpful.. thanks bro
Click to expand...
Click to collapse
Please explain step by step which one i must choose to enable lte/wdcma/gsm network

Are this phone n910s not support 900 wcdma band?

note 4 hidden menu network settings
I got this note 4 off ebay and it kept wanting to roam, and not use my network preference. I went into the hidden menu and changed it to all LTE and it asked if i wanted to use my network data and i said yes. Fixed it and the roaming "r" went away, but......................it won't stay like this after you reboot the phone, it goes back to roaming again until you go back into the hidden menu and do it again. How can you get it to stay permanently?

[Q] URGENT! International Unlock NG2?

I'm leaving the country on Sunday and I need to be able to use my phone with an international SIM. What is the quickest way to international unlock it by then? I see a lot of conflicting information like I can't downgrade from NG2 or something like that. Any help?

Hope This helps.
gmap516 said:
I'm leaving the country on Sunday and I need to be able to use my phone with an international SIM. What is the quickest way to international unlock it by then? I see a lot of conflicting information like I can't downgrade from NG2 or something like that. Any help?
Click to expand...
Click to collapse
if you need any help; please pm me, or search this site for answers. I am sure you are not the first person, to want to do this or to have this question.
Before you continue; please note that i am not liable for any damages, that may occur to any the devices you attempt this on.
To undo any and all of the changes that you are about to make to your phone(**NOTE** the following will erase all data on your phone so backup everything you want to keep.), (1) first download an app called MSL utility and write down your MSL code on a computer, or any other device maybe even pen and paper.(2) go to your phone settings hit activate this device when it is done loading do not click done.(3) click on the menu button and go to PST settings. (4) go to the ##SCRTN# menu and follow what it prompts you to do, your phone will then reboot automatically. (5) do steps 2 and 3 over again and go to the ##RTN# menu and follow the prompts your phone should than reboot automatically and now you should see an invalid SIM sign. **NOTE** any time it asks you to enter a code it means enter you MSL code. Remember to undo these steps first. (No. 2)**NOTE** when your done with steps below download BuildProp Editor(you must have root), and click on the pencil icon; scroll to the bottom, and add these two lines: ril.sales_code=LOL ro.csc.sales_code=LOL)
No. 1) = No, you do not need to downgrade.
No. 2)**NOTE** when your done with steps below download BuildProp Editor(you must have root), and click on the pencil icon; scroll to the bottom, and add these two lines:
ril.sales_code=LOL
ro.csc.sales_code=LOL
save and reboot
with sim inside the apn should be set automatically. If not, well than google your apn, and add it manually.
done.
This is a re-post(i would thank whom ever posted this, though i do not recall where i found it.); because i am to lazy, to write it from scratch.
1. Use ssu.apk to unlock it first
2. use cf auto root to it
3 .use adb:
su
am broadcast -a android.provider.Telephony.SECRET_CODE -d android_secret_code://27663368378
UMTS -> DEBUG SCREEN -> PHONE CONTROL -> NETWORK CONTROL -> GCF
There the phone is domestic unlock without downgrading the modem.
1. be on stock NG2. ssu.apk force-closes on aosp/custom roms.
2. Run ssu.apk and do the unlock. This does not require root.
3. do the other commands through ADB(step 3 Above), just in case. You may or may not need them. I don't know why it worked for me without them. That step DOES require root.
4. Test your sim card and make sure your phone can read it, and if possible, make a call, try text/data, whatever.
You're Welcome!

I had NAE i downgrade to mdc then unlocked it and after that i download firmware which is NG2-xas i think and after upgrading its still unlock.
For that method and files you can search international sim unlock.
Its easy to do it.

imaxuout said:
if you need any help; please pm me, or search this site for answers. I am sure you are not the first person, to want to do this or to have this question.
Before you continue; please note that i am not liable for any damages, that may occur to any the devices you attempt this on.
To undo any and all of the changes that you are about to make to your phone(**NOTE** the following will erase all data on your phone so backup everything you want to keep.), (1) first download an app called MSL utility and write down your MSL code on a computer, or any other device maybe even pen and paper.(2) go to your phone settings hit activate this device when it is done loading do not click done.(3) click on the menu button and go to PST settings. (4) go to the ##SCRTN# menu and follow what it prompts you to do, your phone will then reboot automatically. (5) do steps 2 and 3 over again and go to the ##RTN# menu and follow the prompts your phone should than reboot automatically and now you should see an invalid SIM sign. **NOTE** any time it asks you to enter a code it means enter you MSL code. Remember to undo these steps first. (No. 2)**NOTE** when your done with steps below download BuildProp Editor(you must have root), and click on the pencil icon; scroll to the bottom, and add these two lines: ril.sales_code=LOL ro.csc.sales_code=LOL)
No. 1) = No, you do not need to downgrade.
No. 2)**NOTE** when your done with steps below download BuildProp Editor(you must have root), and click on the pencil icon; scroll to the bottom, and add these two lines:
ril.sales_code=LOL
ro.csc.sales_code=LOL
save and reboot
with sim inside the apn should be set automatically. If not, well than google your apn, and add it manually.
done.
This is a re-post(i would thank whom ever posted this, though i do not recall where i found it.); because i am to lazy, to write it from scratch.
1. Use ssu.apk to unlock it first
2. use cf auto root to it
3 .use adb:
su
am broadcast -a android.provider.Telephony.SECRET_CODE -d android_secret_code://27663368378
UMTS -> DEBUG SCREEN -> PHONE CONTROL -> NETWORK CONTROL -> GCF
There the phone is domestic unlock without downgrading the modem.
1. be on stock NG2. ssu.apk force-closes on aosp/custom roms.
2. Run ssu.apk and do the unlock. This does not require root.
3. do the other commands through ADB(step 3 Above), just in case. You may or may not need them. I don't know why it worked for me without them. That step DOES require root.
4. Test your sim card and make sure your phone can read it, and if possible, make a call, try text/data, whatever.
You're Welcome!
Click to expand...
Click to collapse
Thanks so much for the quick response!
Couple of things, I actually called Sprint to ask them to unlock it for international SIMs, and they said they'd go ahead and do it. I flashed back to Stock and did the UICC Unlock thing in the menu like they told me. The phone rebooted. I think it's unlocked then, correct? If not, I'll go ahead and do this method tonight.
Also, does this phone support LTE (Is that the right term) on international GSM networks or just 3g?
Thanks!

gmap516 said:
Thanks so much for the quick response!
Couple of things, I actually called Sprint to ask them to unlock it for international SIMs, and they said they'd go ahead and do it. I flashed back to Stock and did the UICC Unlock thing in the menu like they told me. The phone rebooted. I think it's unlocked then, correct? If not, I'll go ahead and do this method tonight.
Also, does this phone support LTE (Is that the right term) on international GSM networks or just 3g?
Thanks!
Click to expand...
Click to collapse
it may be unlocked; you would not know for certain unless, you attempt to insert an international sim card.
Depending on which country you are traveling to. Some countries only have 2-G, then there is some that use 3-G, some also utilize HAPA+, and LTE. It also depends on the sim card they give to you. If the give an LTE sim card, it may work (for LTE or HSPA+). Though it depends on which band/frequency, its relying on. click here to see LTE frequency data sheet. click here to select the country you are traveling to, this way you'll know if you will be able to be on a favorable network.
You're Welcome!

imaxuout said:
it may be unlocked; you would not know for certain unless, you attempt to insert an international sim card.
Depending on which country you are traveling to. Some countries only have 2-G, then there is some that use 3-G, some also utilize HAPA+, and LTE. It also depends on the sim card they give to you. If the give an LTE sim card, it may work (for LTE or HSPA+). Though it depends on which band/frequency, its relying on. click here to see LTE frequency data sheet. click here to select the country you are traveling to, this way you'll know if you will be able to be on a favorable network.
You're Welcome!
Click to expand...
Click to collapse
I'll be in Israel, and their networks support LTE

gmap516 said:
I'll be in Israel, and their networks support LTE
Click to expand...
Click to collapse
I don't know if that's true. What i do know is that the last time i was in Israel, i used Golan Telecom, and i only had a 3G connection. i do know that they state they have a 4G-Lte network, but i guess i'll have to find out in a few months from now.
good luck.

Yotaphone 2 signal boost trick/unlock band ?

Helo from Slovenia,
perhaps i found a way to boost signal or unlock bands in Yotaphone 2.
Go to android secret menu *#*#4636#*#*
Then go information about phone menu and scroll down.
There is a option for choosing priority band, normaly its choosen LTE/WCDMA
Klick on this and switch the options to TD-SCDMA,GSM/WCDMA and LTE or TD-SCDMA,LTE,CDMA,EvDo GSM, WCDMA
Now watch the signal boosting
I checked same locations driving yesterday and today with car. Where i yesterday got no signal, today i got fully edge signal.
And no signal outage today no matter the location
Check this option and let me know if it works there too. I tried on Android 4.4.3 and 5 work both.

I put the first one, but how can I see the difference? the problems was not getting the 2G signal at all if I force in 2G. But if I force it now, your suggested settings will change.
What is the difference between TD-SCDMA,GSM/WCDMA and LTE or TD-SCDMA,LTE,CDMA,EvDo GSM, WCDMA?
May I ask you which mobile operator you have and which radio & firmware you use on your YotaPhone2?

TheArt. said:
I put the first one, but how can I see the difference? the problems was not getting the 2G signal at all if I force in 2G. But if I force it now, your suggested settings will change.
What is the difference between TD-SCDMA,GSM/WCDMA and LTE or TD-SCDMA,LTE,CDMA,EvDo GSM, WCDMA?
May I ask you which mobile operator you have and which radio & firmware you use on your YotaPhone2?
Click to expand...
Click to collapse
you have to go to spots/locations where you got no signal before and try it now ?

Setting your phone to the wrong settings so it fails over to 2G will no doubt improve your signal strength no end. But personally I would prefer to get fast internet on the move, and leave your radio settings well alone!
There are apps you can get that are called 'signal boosters' they just work by turning off your phone radio and then on again. If you were not connected to a nearby cell but one farther away this will 'boost your signal' ...
You're probably experiencing either or both of these effects. as well as the 4G effect - which is that if you have a local 4G aerial all the cellphones that can do so will be connecting to that, leaving you free to connect to an empty 3G cell instead with lots of bandwidth. Maybe not what you had planned to do, but actually improving your performance by setting the wrong settings

Did anyone already find the secret USB menu code to put the device into Modem mode? As the YotaPhone has a Qualcomm processor, this could be used to enable additional LTE bands, which really would help with reception like in [GUIDE] Add all GSM and LTE bands to your phone.

seems cool! We have to test

Crazyphil01 said:
Did anyone already find the secret USB menu code to put the device into Modem mode? As the YotaPhone has a Qualcomm processor, this could be used to enable additional LTE bands, which really would help with reception like in [GUIDE] Add all GSM and LTE bands to your phone.
Click to expand...
Click to collapse
Modem mode can setted by change buildprop sys.usb.config=diag.
Next read this.

w()$k said:
Modem mode can setted by change buildprop sys.usb.config=diag.
Next read this.
Click to expand...
Click to collapse
Ah, I haven't noticed that post, so we're making progress but no clear results yet :fingers-crossed:
here on XDA there's also this thread about unlocking frequencies: https://forum.xda-developers.com/yotaphone-one/help/unlocking-additional-radio-basebands-t3523000

TD-WCDMA won't work in spain. TD stands for Time Division and many countries work with FD (Frecuency Division)

Hi,
I am much interested in changing the LTE of YD206, has anyone suceed yet on this phone? A tuto would be really awesome! As I am new to android it would definitly help!
@TheArt. could you eventually translate the post please? My russian is far not good enought and google translated does not make much sens...! Did you succeed modifying the bands?

UNLOCK LTE BAND B20 - 800Mhz and B38
I will translate here the work of three 4pda users who must be thanked a lot for their work! unkernet, ssho and BoyNG. Thank also to mamant1988 who put everything together.
The original 4pda guide can be found here (in russian): http://4pda.ru/forum/index.php?showtopic=797643&view=findpost&p=59716629
UNLOCK B20 LTE BAND ON YD206​
Starting point is a rooted YD206 with latest RU 134 firmware, TWRP and ADB-USB-debug enabled. Do this procedure carefully and write down all the modifications and default values. The changes are performed on NVRAM level, so flashing firmwares will not affect them. Flashing firmwares will, however, affect modified baseband, as any other "radio" part as usual.
Download here the .zip archive which contains what is needed for this guide, including some screenshots of how things should be displayed.
Download the modified baseband RU-CN here and put it into the internal memory of the phone: it will be flashed in the end.
Install QPST and QXDM Qualcomm programs on Windows, they are in the above archive.
Enable the installation of unsigned drivers in Windows (like this). This is needed to install drivers for the diagnostical port later on.
Download Terminal Emulator from Play Store.
In the Terminal, write the following to get root access:
Code:
su
then:
Code:
setprop sys.usb.config diag,adb
Connect the phone via USB to the PC, in the Device Manager it should pop up as "Android Device" or similar, without a specific driver.
Right click on it and perform these actions: update drivers, search on this computer, choose driver from already installed drivers, show all devices, next, install from disk, there point to the .inf file corresponding to your system (32bit -> x86, 64bit -> x64) found in \YotaLTE\Modified HTCDiagDriver\Win x64HtcUsbMdmV64.inf (for 64bit).
After installation, go to properties of this new driver HTC USB Modem and check the number of the port displayed there, COM3 or COM4, for example.
Lower the 38400 value which you find there, click OK.
Execute as an admin C:\Program Files (x86)\Qualcomm\QPST\bin\QPSTConfig.exe.
Choose the second section Ports, then "Add new port".
In the field Port put the one which was displayed in the modem section, COM3 for example.
In Port Label field write "Yota" or whatever, and then OK.
In the first section Active Phones the smartphone should be displayed.
KEEP QPSTConfig.exe PROGRAM OPENED.
Also, start C:\Program Files (x86)\Qualcomm\QXDM\Bin\QXDM.exe using admin privileges
Here, click Option, then Communications.
In the Target Port choose the same port as before, then OK.
Click View, New, Common, NV Browser. In the Category Filter choose LTE.
Choose 06828 LTE BC Config and then press "read".
Correct the number you see, for example 1099511627781 in 1099512152069 for B20 and click Write to save.
Close all the programs, and reboot the phone directly into TWRP (VOL UP + POWER), here find the update_S01_003_4240_RU1_M05_patched.zip baseband and flash it.
At this point it is advised to clean dalvik cache and cache with TWRP.
Done! Reboot.
If it is not working, reset everything by flashing stock baseband, putting back the values changed above and start again. It is not necessary to flash the modified RU-CN baseband, if with the CN one the phone is performing at 100%. I suggest to flash to see the differences. By the way, remember to unlock one band at a time.
To unlock B38 band (there is lack of information about YD206 already having it or not) the number is 1236951105541. For example, if the initial number found in LTE config was: 1236950581253, it means that the bands LTE B1/B3/B38/B41 were active. To verify by yourself download LTE Band Calculator.
Some attempts have been made also to unlock B7 band, but without success for now. It seems that the baseband crashes after a second when triying to connect to that LTE band. Further research needed!

After all the hassle I just went through to obtain a YD201 instead of a YD206 so I could have Band 20
Great news for YD206 owners anyway, thanks for sharing!

hippy dave said:
After all the hassle I just went through to obtain a YD201 instead of a YD206 so I could have Band 20
Great news for YD206 owners anyway, thanks for sharing!
Click to expand...
Click to collapse
Me too.
Tried drivers installation with a yd201 (just for take a look about the wifi issue) and they are not compatible.
I guess modifying the inf files would do the trick.

Hi, I try to unlock LTE band, but su command doesn't work in terminal .... it said su: not found.

velociraptor68 said:
Hi, I try to unlock LTE band, but su command doesn't work in terminal .... it said su: not found.
Click to expand...
Click to collapse
Do you have root? Do you give root permission to Terminal Emulator?

Just did the procedure, can't confirm if it's working on 800MHz B20 yet because I can't find a way to force it or even know if its available in my region from my Network, because I live in the city and they use mostly the 1800MHz, 2G Only works correctly and it seems that somehow it also solves the Proximity Sensor, I will give feedback at how it behaves tomorrow when I will be on the move, but until now everything seems well and smooth, Many Thanks for the persons that worked on the fix, I guess Yota should be hiring! And to @TheArt who translates all the good stuff!

band17
Hello,
Would it work to unlock band 17 At&t? Is that enough modify config 6828 number by calculator?

Hello,
I am from Bosnia and got Yotaphone 2 from China (YD206) and installed latest RU software 1.132, but I noticed that my phone only works in big cities. As soon as I leave for the countryside, there is no signal/service.
Is there another version of software I can try to upgrade to, to get these bands in the countryside as well, or the problem is with the limitation of phone's hardware?
Thanks!

Miroslav1999 said:
Hello,
I am from Bosnia and got Yotaphone 2 from China (YD206) and installed latest RU software 1.132, but I noticed that my phone only works in big cities. As soon as I leave for the countryside, there is no signal/service.
Is there another version of software I can try to upgrade to, to get these bands in the countryside as well, or the problem is with the limitation of phone's hardware?
Thanks!
Click to expand...
Click to collapse
Whats the coverage in your contry?
Maybe outside big cities there are not mobile connection in the frequency that yotaphone can support

borekon said:
Whats the coverage in your contry?
Maybe outside big cities there are not mobile connection in the frequency that yotaphone can support
Click to expand...
Click to collapse
GSM : 900 (E-GSM) 1800 (DCS)
UMTS: B1(2100) UMTS B8 (900 GSM)
That is what I found out from google. I am not sure what is the better way to find out what Yota covers and what is available here.
If someone knows please let me know.
If I perhaps flash the phone with EU software rather than RU which I currently have, would that unlock some bands?

Xiaomi Mi Bunny Watch Q internationalization

Please somebody help to modify firmware to enable international GPRS connections
What we currently have:
1. Mi Bunny Watch Q is Working on MT6261 SOC
2. Operating system is modified 2011 year Nucleos RTOS, which was widely used in older featurephones
3. Firmware is not available for separate downloading. Watch updating is OverTheAir (via Bluetooth connection from your smartphone with original APP, and, PROBABLY via GPRS connection) firmware files are called
SH08_PCB01_gprs_MT6260_S00.MAUI_11B_W13_08_MP_V15.bin
My current firmware version is MAUI.11B.W13.08.MP.V15
updates are downloaded from http://upgrade.imibaby.net/upgradeWatch
also you can find http://sw105-online.imibaby.net/ link in firmware - probably for watch activation
All we have now - full ROMdump of my watch divided to parts with Readback Extractor mtk
Also we can get acess to NVRAM and FAT partition with MauiMETA_v9.1635.23 tool (you need NVRAM database file for MT6261 chip - i've gt one from Keneksi X8 firmware kit ( or from official site ) also i have used scatter file from Keneksi to download ramdump with SP Flash Tool
Also there is good tool Binwalk which i don't know how to use well
4. Watch activation procedure looks like: ( english user manual for similar product )
-turn on the watch (lights on and sound prompt)
-insert SIMcard (sound prompt)
-----------we are currently here------------------
-GPRS connection is automatically established
-and watches time should set up the time (you get a sound prompt) /what notifies server of pairing ready status/ - this should be a sign and confirmation of successful internet connection
-you scan QR code in your user-manual (smartphone receives pairing settings from server) and establish connection between smartphone and WATCH
...
5. Watch officially supports only Chinese SIM cards. Confirmed by manufacturer. Chinese cellular operators settings are preinstalled. MNC MCC and APN can be found in firmware like 460 46000 46002 46007 etc
i have tryed to change MCC and MNC to my operators (25501) (my operator supports any APN so i got luck here)
and have got a breakthrough here - watch began to establish GPRS connections via "internet" APN
but no luck - time is not set up, i've got no "successful connection" sound prompt, and it is still impossible to activate it.
I have contacted manufacturer via Weibo and WeChat.
Everywhere i got refused with corporate security reasons, BUT at the very beginning i think some very helpful manager answered and tryed to give help (later he disappeared)
He requested from me to fill up XML form with my cellular operator's settings and sent image explaination
Hello,Mr Pumpkin
There is some instructions you can follow.
First,please make sure the sim card support calling in or calling out.
Secondly,be sure the sim card supports 2G GPRS connection.
You can consult the local operators about specific parameters.
The "code" parameter and "apn" parameter in the following table must be filled in correctly.
The other parameters are alternative.
Code:
<?xml version="1.0" encoding="UTF-8" ?>
- <Account>
- <AcntHdr>
<AcntVer>1.0</AcntVer>
</AcntHdr>
- <AcntBody>
- <SIM Operator="BEELINE" Code="25502">
- <Item Bearer="GPRS">
<AppType>WAP</AppType>
<Title>Beeline WAP GPRS</Title>
<APN>wap.beeline.ua</APN>
<Authentication>NONE</Authentication>
<Homepage>http://wap.beeline.ua</Homepage>
<Proxy Enable="Yes" ProxyAddress="172.29.18.192" ProxyPort="8080" />
<PrimaryDNS>null</PrimaryDNS>
<SecondDNS>null</SecondDNS>
<IPAddress>null</IPAddress>
<Subnet>null</Subnet>
<ConnectionType>HTTP</ConnectionType>
</Item>
Click to expand...
Click to collapse
There is excellent site with lots of information
https://www.dr-lex.be/hardware/china_phone_flashing.html
Also some discussion is going on MIUI forum and russian 4pda forum

International Apn settings
The answer from the Chinese manufacturer is an xml file that we should add to the device ROM. It is not so different to the following thread
https://forum.xda-developers.com/showthread.php?t=2387346
I have my bunny watch 2, that I have paired during a visit to Sz, and will try to add the xml file today. Hopefully we can get a connection.

EASolana said:
The answer from the Chinese manufacturer is an xml file that we should add to the device ROM. It is not so different to the following thread
https://forum.xda-developers.com/showthread.php?t=2387346
I have my bunny watch 2, that I have paired during a visit to Sz, and will try to add the xml file today. Hopefully we can get a connection.
Click to expand...
Click to collapse
Excellent desicion! I will try to do it.
I can assume, that developer didn't offered me this thing because we actually don't have access to ROM. We can get there only with MAUI META tool. Also the watch is not based on Android, so we will have to find correct folder to place the file and guess correct name for it.
Also XML should be specifically formatted, and we have this format from developer.

Easier said than done, but still I got some progress today.
After reviewing the ROM I was able to find several At commands to control the device.
I'm missing the sintaxis on many of them, but I was able to directly perform and receive a call from the Hyper terminal.
I named the xml file default.xml and placed on the root directory and several others but no luck achieving a Apn configuration.
Also I browsed the fat and nvram looking for hints on how the device was configured while using the Chinese card, but no luck there.
If I'm able to find the device configuration At command it should be pretty straightforward.
Just as a note, the App is fully Chinese, no options on the menu are translated.

EASolana said:
Easier said than done, but still I got some progress today. .
Click to expand...
Click to collapse
Some of terminal AT+ commands work excellent (like ATD Most interesting one is AT+DEBUG_ON and AT+DEBUG_OFF it changes usb connection type. ( With debug on you will get 2 usb devices (usb com, and modem)
About app - i have translated it to russian, if it can help )

Connecting outside of china
Well, today I got connection from outside of China.
I played with several of the At commands that were supposed to actually configure the settings, and all seemed to make the terminal hang.
But after rebooting the phone it got a connection. Now it's fully working.
I used the AT+CGDCONT command.
Then I reviewed again the Fat to look for changes and the only file that was modified is store_info. Dat file.
That file was loaded in the same back up you made, with China Mobile settings, and now mine has got the unicom settings.
For the information it contains it looks fairly similar to the format the engineer gave you a solution for.

EASolana said:
Well, today I got connection from outside of China
Click to expand...
Click to collapse
Excellent news. Now i just would like to have some more details, on how i could repeat your success.
AT+CGDCONT is not working for me - no answer from watch to this command.
Can you provide some more info. What MCC and MNC does your cellular operator has? What version of firmware do you use.
Did you actually implemented any changes to your firmware?
Which terminal software do you use? Which COM device you selected? Was DEBUG mode active?
Or what should i do to get my watch connected?
Thank you.

Hello,
EASolana said:
I have my bunny watch 2, that I have paired during a visit to Sz, and will try to add the xml file today. Hopefully we can get a connection.
Click to expand...
Click to collapse
Did you connected with a Chinese Sim card and then changed it to a foreign one?

So I first activated my device in China with a Xiaomi Sim card.
Then traveled back to Hk, and tried with Hk local China unicom, China Mobile and three Sim cards. None worked.
Then I tried the at command for setting up the Apn settings on the device. The commands would not give an OK response, so I do not know exactly which one worked.
Then rebooted the device, and it can connect with Three and China mobile cards. UNICOM still not working.
I saw the change in the file mentioned above. It changed from one operator to the other.

HK is not so far from China, so i think there could be native support for your operators.
Anyway, could you please provide other then China Mobile store_info.dat file from your FAT partition, and a ROMdump to compare. I think you have a more fresh watch firmware. Thank you

Today I'm in China so I will not be able to upload the files to a G drive location, tomorrow I should be able to upload them.
I have bought a new device today (this time the mini GPS, 6261 based) and done a backup before the network registration and after.
I can confirm that all changes are happening to the file named "store_info.dat", and all the new data is matching to the xml format you were given. But written on a low level way inside the .dat file.
The GPRS - APN settings are independent of the GSM settings. So you will need 2G settings for your local operator, be sure you are registered in the network by performing a call to your SIM Card number then modify the store_info file with your specific operator parameters. Be sure to do this on the Hex editor so file length is constant after your perform the modification.

EASolana said:
So you will need 2G settings for your local operator, be sure you are registered in the network by performing a call to your SIM Card number then modify the store_info file with your specific operator parameters. Be sure to do this on the Hex editor so file length is constant after your perform the modification.
Click to expand...
Click to collapse
I am bothered with MCC and MCC settings. All i can see in DAT file is apn for internet wap and mtp, but no readable data about cellular operator
Update: i have sniffed through the firmware again, and i got that China, Hong-Kong and Taiwan are natively supported by the watch... Probably you will get some problems with diferrent cellular operators, but all 3 MCC codes 460 466 and 454 are in firmware

If you keep looking in the firmware, just bellow the MCC codes you will actually find the APN settings. Keep searching to the bottom of the file and you will find the W. A. P... U. N.I.C.O.M... C.H.I.N.A...M.O.B.I.L.E part of the string, that means that beside replacing your MMC on the top of the file above by replacing the 460, 466, 454 codes, you also have to look toward the end of the file and replace the 460000, 454000, 46600 codes with your combination of MCC and MN settings.
Since you cannot add length to the file, remember to find an operator WAP setting that will fit in the current.

EASolana said:
460000, 454000, 46600 .
Click to expand...
Click to collapse
all of them? - i was trying all of this, except editing DAT file
Please, share your DAT file
Also please, tell me MCC and MNC of your HK cellular network, on which you have managed to make everything work (perferably for the first time with your watch)

By the way, sniffing around MTK6261 source code led me to interesting things
setting are really preinstalled
custom_config_account.c file from "Source_code_of_6261\code_6261A_L1\custom\common" gives a clue.
I think for now - i have to chose one cellular operator, and fix all it's settings to fit my needs

Yes! I did it!!!!!! Woohoo!!!!

FlamingPumpkin said:
all of them? - i was trying all of this, except editing DAT file
Please, share your DAT file
Also please, tell me MCC and MNC of your HK cellular network, on which you have managed to make everything work (perferably for the first time with your watch)
Click to expand...
Click to collapse
These are the operators that i have tried in HK.
China Mobile
Name: CMHK
APN: cmhk
MCC = 454
MNC = 12
MMSC = http://mms.hk.chinamobile.com/mms
454 07 Unicom
454 11 Hongkong Telecom
454 00 CSL
454 16 PCCW
454 06 Smartone-Vodafone
Attached is the DAT file.

Where you got the source code from?
Source_code_of_6261\code_6261A_L1\custom\comm on

EASolana said:
Where you got the source code from?
Source_code_of_6261\code_6261A_L1\custom\comm on
Click to expand...
Click to collapse
https://mega.nz/#F!JMsgDCYR!qn39qDJ5LzOz1TkUbdqvtQ

Time to sum up progress.
Activation option #1
Have your Chinese Seller activate the device using a Chinese Sim card before shipping, and this should ensure full communication in China, Hong Kong, Taiwan. (460.466.454) and possibly in the following places:
208 - France, 404 - India, 405 - India, 454 - Hong Kong, 455 - Macao, 466 - Taiwan, 502 - Malaysia, 505 - Australia, 510 - Indonesia, 515 - Philipines, 520 - Thailand, 525 - Singapore.
Given that MCC codes for several operators in those countries are included in the list inside the FW.
If you are choosing this way, you need to remember the device is only 2G - GMS 900/1800 compatible, so before you waste time, ensure you carrier is compatible. Australia has just dumpled 2G support so don't even try.
You can execute the following AT code before purchasing the SIM card, and it will tell you the carriers that the device could possibly connect: AT+COPS=?
It will reply the MCC Codes and operator name, with that information you can look for a valid unlocked and activated sim card.
Since device was activated in china it will easily go trough the regular process of scanning the QR code and adding the device to your APP.
Activation Option #2.
Modifiy the MCC parameters inside the FW and include your specific operator details.
FlammingPumpking, you can help us comment on how you succeed with activation.

A510F. Emergency calls only

So my A510F out of nowhere starting doing some weird stuff. When someone tries to call me, the phone instantly goes into emergency calls only mode. Same happens when i try to call someone. I can send text messages, the internet works fine. I tried doing system restore, it didn't help. Also tried flashing a custom rom. I'm still having the same issue. I tested the SIM card in another phone, and the calls go through with no problem. Any help?

Ok... let's start.
RAT Lock to 3G only. The issue persists?
RAT Lock to 2G only. The issue persists?

Bryan48765 said:
Ok... let's start.
RAT Lock to 3G only. The issue persists?
RAT Lock to 2G only. The issue persists?
Click to expand...
Click to collapse
Yes, still the same issue

nexasLT said:
Yes, still the same issue
Click to expand...
Click to collapse
this is after locking or making a call?
wait 3 mins after locking

Bryan48765 said:
this is after locking or making a call?
Click to expand...
Click to collapse
After trying to make a call

nexasLT said:
After trying to make a call
Click to expand...
Click to collapse
Use the USSD *#0011# & select sim. The registered PLMN / MCC MNC is the same in the normal state and emergency calls only? Signal strength and quality is OK (includes ec/io?) TCH rx lvl no longer -- with call / any MNO's USSD code on 2G? Any change if the operator is manually searched and selected?
Edit: I'm suggesting 2G/3G because maybe at some time, the CSC was not applied correctly, disabling volte and leaving CSFB. If *#0011# doesn't work the CSC wasn't applied correctly. Was that other phone connected to another cell (different band preference), or did it have volte enabled?

Bryan48765 said:
Use the USSD *#0011# & select sim. The registered PLMN / MCC MNC is the same in the normal state and emergency calls only? Signal strength and quality is OK (includes ec/io?) TCH rx lvl no longer -- with call / any MNO's USSD code on 2G? Any change if the operator is manually searched and selected?
Edit: I'm suggesting 2G/3G because maybe at some time, the CSC was not applied correctly, disabling volte and leaving CSFB. If *#0011# doesn't work the CSC wasn't applied correctly. Was that other phone connected to another cell (different band preference), or did it have volte enabled?
Click to expand...
Click to collapse
The *#0011# sin't working. The other phone was LG P500, it only has 3G. I'm running Arrived Crystal ROM on the samsung if that helps

nexasLT said:
The *#0011# sin't working. The other phone was LG P500, it only has 3G. I'm running Arrived Crystal ROM on the samsung if that helps
Click to expand...
Click to collapse
If the 0011 disappears with no response, the ril service mode has been debloated. If the 0011 stays with no response, the CSC was not applied correctly. You could alternatively try to open it with root (am broadcast...) Check logcat -s XMLParser:V, there should normally be at least one that doesn't say file not found.
With that rom you likely have root, to apply CSC copy the content of /system/csc/yourcsc/system/ into /system/.
/system/csc/yourcsc/system/etc merges into /system/etc & /system/csc/yourcsc/system/csc merges into /system/csc
Set the permissions of those files (not folders) to 644(owner read write, group read, other read). After this try volte(4G LTE) if available.
Specifically, it's "yourcsc_keystrings.dat" for 0011. Rename it to sm-a510f_keystrings.dat if it doesn't work. This file from any device or CSC could work.
The 0011 isn't the solution to the problem, unfortunately. But it could help us know what's the cause of it.
Something else: (backup the efs in case you accidentally select something unintended, or because maybe it's broken on nougat, 9090 is something different and could cause modem bricks, I've used 9900 on a510fd marshmallow) Enable mobile data while the network becomes unavailable, *#9900#, select run cp based log. In /data/log/err, open litmuslog...txt and scroll down. Google those reject cause codes if there are any.
Showing errors specific to calls is at+ceer(create a backup), an at command that could be run with the 'modem serial port' on a PC or on the Exynos device itself with root and with minicom -D /dev/umts_router.
Also, you could try contacting your MNO. It's likely that they will tell you to restart your device but it's worth a try.
You could try a SIM from another MNO.
I've got nothing else.

Emergency call solved in a510fd
Is the 4-file maintenance ROM capable of repairing the network in a model A510FD and can it solve the problem of emergency calls only?