Database Users

[Q] No network service GT-S7710 after installing CM10.1, 10.2 or 11

Hi peoples!
I’ve recently installed Cyanogenmod on my Samsung galaxy Xcover 2 (GT-S7710). But when I was done installing my phone couldn’t get any data (H/2G/3G) or call and receive calls. Could someone tell me what I did wrong or forgot whilst or after I installed Cyanogenmod? I would like to know because I’ve read other threads where people with a GT-S7710 do have a working network service on their phone with CM. And I also would like to know the solution to this problem because I can’t take a beating .
I apologize for the length of this first post . I just want to be totally complete about what I’ve done and tried so far to get CM to work with network service. I posted all this information to inform you all and so you could stripe a lot of questions off your list for finding the solution. Also I think this thread may be very useful for other Samsung Android users as well.
Kind regards,
Rick Willems
The problem
So the problem is that when I’ve installed CM10.1 or 10.2 or 11 to my GT-S7710, I don’t have any network service anymore. I tried to install CM using the following method: http://blog.arinium.fi/2014/07/howto-fix-samsung-xcover-2-issues-old-android-low-memory-slow-ui/. I installed CWM 6.0.4.6, wiped cache and installed CM10.2. After this it got stuck in a bootloop. Using the advice of this page: http://forum.xda-developers.com/showthread.php?t=2084905 which was to also wipe data/factory reset and wipe dalvik using CWM it worked!! YES!! But **** no service.
Used Files to install
Links I used to download CWM, CM and Gapps come from these pages:
http://forum.xda-developers.com/showthread.php?t=2384015&highlight=no+network, http://forum.xda-developers.com/showthread.php?p=43294839#post43294839,
CWM: http://www.adriadata.net/xda/skomer/
CM: http://www.adriadata.net/xda/skomer/
Gapps: https://itvends.com/gapps/
What I’ve done and tried
I tried to get network service back when I installed CM10.1 and CM11. In both cases I did a full wipe of data/factory reset, cache and dalvik then installed the latest stock rom/firmware 4.1.2 and do the instructions over again form the chosen method. I did notice that my phone does have network service when I have installed the stock rom/firmware downloaded from this link: http://www.mrcrab.net/down-firmware/14362/Samsung-Galaxy-Xcover-2-GT--S7710.html, My device also has got service when CWM 6.0.4.6. is flashed over the stock rom/firmware. Just not when I installed CM. CM10.1 was running more smoothly than CM10.2 and CM11 was running a little less smooth than CM10.2.
Attempt to solve the problem
I’ve brainstormed the following pages to get to the point of giving up .
http://forum.xda-developers.com/showpost.php?p=35600769&postcount=2
http://forum.xda-developers.com/showthread.php?t=1205439
http://forum.xda-developers.com/showthread.php?t=2448246&page=2
http://forum.xda-developers.com/showthread.php?t=1304258
http://android.stackexchange.com/questions/39076/sim-card-failed
http://forum.cyanogenmod.org/topic/63816-network-problem-with-cyanogenmod-101-1218/
http://forum.cyanogenmod.org/topic/85051-no-service-cant-calltextnetwork-after-flashing-cm11-nightly-on-i9305/
The most pages are threads for other devices, but I thought I just read it anyway, maybe I could get some useful information out of it. Some pages talk about CDMA/RUIM that you can find under network setting in settings, but I’ve not been able to find it on my GT-S7710. Other data found in these pages are also not corresponding with my device.
What I did notice and learned was that information in the EFS folder like Imei, Baseband etc. are used to find and recognize the simcard and thus enable data usage and be able to call and receive calls. So I thought why not backup a copy the EFS folder and place it in CM’s EFS folder after install, so I did. I installed stock firmware where my network service works following the same steps I took that I described earlier, backup the EFS folder to sdcard1, install CWM and CM10.1 and tried to copy the backed-up EFS folder to CM root. But no way would it replace the CM EFS folder, CM simply blocks the copied EFS folder from stock rom/firmware.
I am just out of ideas now and am requesting your aid. Please help me .

Got the same problem here,unfortunately no fix yet

Try this:
kadooosh said:
For those trying to install this or another rom and having the no signal(no smallband) problem. This worked for me on 2 xcovers.
Install cmw: http://theunlockr.com/2014/02/27/install-clockworkmod-recovery-samsung-galaxy-xcover-2-gt-s7710/
Root it: http://theunlockr.com/2014/02/27/root-samsung-galaxy-xcover-2-gt-s7710/
Now normally you can install the custom rom now(vanir). If you do you probably get no signal.
Start odin and flash this file : S7710XXAMB6_S7710OXEAMB3-20130713.tar.md5
I found it on this site: http://www.ulozto.cz/xHADj5PD/samsung-7z
If its dead you can pm me and I can send it.
After I flashed this the phone would just go in a bootloop.
Don't be afraid this is normal.
Now install the vanir rom in the cmw recover mode.
After this it should work fine.
Add a microsd card with 2 partitions and install mount2sd and you have a fully working phone with(almost) unlimited space.
I'm using if for an year now and it works great.
Better then most €500 phones which break after 1 fall .
Click to expand...
Click to collapse

With skomer it is definitely a baseband problem. Changing baseband solves the network signal.

ViktorDelta said:
With skomer it is definitely a baseband problem. Changing baseband solves the network signal.
Click to expand...
Click to collapse
because i have the same problem, i installed cm10.2 and everything were fine for a week and then no signal, i tried to install all the available firmwares out there, the closest i got was to find network and 3g i made a successfull call then i shut it off. At the next boot nothing again. My baseband is xxxx. What do i have to do to change baseband? My IMEI is correct.
does anyone have a /modemfs and /efs folder available to try or/and a modem file to flash?

Odin flash
Go to this page https://boycracked.com/2016/09/11/official-samsung-galaxy-xcover-2-gt-s7710-stock-rom/ and download stock rom labeled "oxeamb3". Put your phone on download mode and connect to odin. Flash this rom with it.
After that, flash your clockworkmod and custom rom. Vanir or CM.
If you still lose signal, try with AND2 stock rom. It's been a while since I did this so I don't remember exactly, but I think AND2 had problems with signal and AMB3 didn't.

Problems CM based roms

Hi I got problems with my lux on every cm based rom. On every cm rom I get no reception of my carrier. I don't know if it's a device tree issue or just apn trouble. Since there are no aosp roms, I'm a little hung up. Stock rom works fine. I own the xt1562 operating on German carrier o2. Sometimes I get a few seconds of reception on cm roms, but it's leading just to no signal after a few seconds again. I nearly tired everything, flashed a different firmware etc. When I've flashed a rom I get the information that no sim card was found. After I restart the device he's asking for a pin. Also tried another sim card with the same result. Really could need some help.

flash the original fimrware from ur carrier or region
flash twrp
install cm and see if works
if not,flash only the radio modem from original firmware

Already did. Didn't work. Flashed the new cm12.1 from h2o64. This one is working.

I have the exact same problem with my XT1562 I bought from Germany through Moto Maker.
I installed h2o64's CM build from 10-10 after a full wipe (everything except internal data), and never got any proper signal. I tried squid2's CM build 10-12 as well, to no avail. Installing the XT1562 EU stock firmware following the linked explanation in the stock firmwares thread I had good, working signal, but then installing h2o64's CM build 10-14 with a factory reset rather than a full wipe resulted in the same issues described in this thread again.
I've read about these issues in different threads, mostly resolved somehow by installing the stock firmware, sometimes by selecting LTE as the preferred network type. I've tried these suggestions, but haven't had any success, and I don't know how to proceed.
Did I install the right stock firmware? (I would think so as it worked while it was installed.)
Did I forget to do something (like wipe, fix permissions, reboot the phone three times, howl at the moon,...)?
I use OpenGApps rather than tkruzze's since they're available in x64 as well so I can use them on all my devices. But that surely can't be it?
I'm at a complete loss at the moment, which is rather frustrating. Can anyone provide any help?
Gesendet von meinem Nexus 9 mit Hilfe von XDA Forums Pro.

I managed to install h2o64's CM build 10-14 and getting proper signal now.
I flashed the RETASIA firmware from XMoDuLeSx's Official stock firmwares added for xt1562,xt1563 thread following the instructions linked in the first post, and then after a wipe of system, data, cache, dalvik-cache I installed [ROM][lux][5.1.1] Cyanogenmod 12.1 - 2015-10-14 [UNIFIED].
Keep in mind that I have ordered my Moto X Play from Germany, so it shouldn't require a RETASIA firmware. I'm not advising to install this, as it was nothing but a shot in the dark that surprisingly didn't brick my phone. Still, I wanted to share that I got it working after all, simply to follow up my previous post properly. Should the signal break again, I'll update this thread; if I haven't, assume that it's still working.
Either way, though: If you decide to go down this road and install a firmware that isn't right for your phone and brick it, don't come to me. I'm advising against doing this.

Seems i'm having the same issue...
I did all the wipes and clean installs but I can't connect to my carrier.
Although my phone only supports one sim card, settings shows two. The first one is the one i'm using and it is displayed correctly. The quick settings tile though tells me that there is no sim card inserted.
I came from stock, unlocked, flashed TWRP from squid2's kernel page, rooted, flashed CM(squid2), kernel(squid2) and OpenGApps.
Did I do something wrong?
Is there any news on how to fix this problem or do I have to try again and again an hope to hit the spot?

Mafaldine said:
Seems i'm having the same issue...
I did all the wipes and clean installs but I can't connect to my carrier.
Although my phone only supports one sim card, settings shows two. The first one is the one i'm using and it is displayed correctly. The quick settings tile though tells me that there is no sim card inserted.
I came from stock, unlocked, flashed TWRP from squid2's kernel page, rooted, flashed CM(squid2), kernel(squid2) and OpenGApps.
Did I do something wrong?
Is there any news on how to fix this problem or do I have to try again and again an hope to hit the spot?
Click to expand...
Click to collapse
You need two more posts before you can post this in the CM thread from squid2. Squid2 is always fast with bugfixes. So make 2 other post and then explain your problem to him.

Lennyz1988 said:
You need two more posts before you can post this in the CM thread from squid2. Squid2 is always fast with bugfixes. So make 2 other post and then explain your problem to him.
Click to expand...
Click to collapse
Thanks for your reply!
I will do that
Meanwhile I managed to get a connection to my carrier by flashing h2o64's CM build 10-14 and then squid2's on top without wiping anything...

RR Lux 5.5.8 didn't work Wifi, after 2 clean instalation, wifi turn on and off then

Network Solution grayed out/solved

Hi good fellas, so a week back, I flashed mokee build everything was perfect until I received a WhatsApp message from my friend asking me why the hell am I not picking call when it's ringing. I was like what ? Dude send me screenshot and I got roasted. So I tried finding the root cause and got to know sim selection was grayed out.
Issues were,
1. Not able to select sim selection for calls as nothing happens when you click on the selection area. Data works fine for both Sims, I have not tested with SMS.
2. First sim slot works fine for both incoming and outgoing however on the top it shows the second sim name. For example, in my case I'm using Vodafone (first slot) and Tata DoCoMo, so when I make or get a call to Vodafone, it shows me Tata Docomo.
3. There is no way of making calls from second sim.
What did I do?
1. Downloded NucleaRom latest 1.4.1 did a Clean flash (wipe data, cache, dalvik and system) - Did not work.
2. My saviour in flashing, TWRP backups.
Restored NucleaRom 1.3.5 (which was working fine before) - did not work.
3. Restored NucleaRom MM final version 3.0. did not work.
4. Flashed COS 12.1, Bingo got the selection back ( Damn, it has good battery backup) so used it for couple of days.
7. I couldn't take COS Anymore, so downloded last nightly of cm13, clean flash- success
8. Since I'm so addicted to Nougat I wanted to try my luck, tried lates mokee, NucleaRom, RR, sudamod, Cr Droid but it didn't work in any ROM.
9. Back to COS, clean flash, flashed MM Firmware, then Nougat Roms - did not work.
10. Got some update on Nougat ZUI in its XDA post (thanks to developer), downloded both zip and OTA update,clean flashed. Bingo- selection is back. However ZUI still has force close issues
11. Clean flashed NucleaRom, bingo - selection came back.
Not sure what exactly is the root cause since it persists even after clean flash of other ROMS (which were working before) and also backups. If it happens in one ROM, it happens in most or all the Roms. Even in China based ROM.
So, this is the only solution I found, it worked for me. Let me know if it works or if you have any questions.
Thanks to all the developers of Z1. ?

Thanks.
But I think a have found another solution for it.
When I Flash Gapps mini, I have the problem.
But when I Flash Gapps Stock, The default dialer is replaced and then I go to settings and change default dialer to phone(by Google) and sim selection perfect.
Can anyone confirm?

SidthConquerer said:
Thanks.
But I think a have found another solution for it.
When I Flash Gapps mini, I have the problem.
But when I Flash Gapps Stock, The default dialer is replaced and then I go to settings and change default dialer to phone(by Google) and sim selection perfect.
Can anyone confirm?
Click to expand...
Click to collapse
Could be. I had tried with Pico and super. Did not work for me
Sent from my Zuk Z1 using XDA Labs

None of the above two mentioned solutions worked.... can anybody tell me any other way???? i am too disappointed with this problem...

Fahad305 said:
None of the above two mentioned solutions worked.... can anybody tell me any other way???? i am too disappointed with this problem...
Click to expand...
Click to collapse
Is sim selection working on COS, cm13 nightly? What happened when you have flashed zui?
Sent from my Zuk Z1 using XDA Labs

SidthConquerer said:
Thanks.
But I think a have found another solution for it.
When I Flash Gapps mini, I have the problem.
But when I Flash Gapps Stock, The default dialer is replaced and then I go to settings and change default dialer to phone(by Google) and sim selection perfect.
Can anyone confirm?
Click to expand...
Click to collapse
I tried to flash Gapps Stock but it didn't work, Sim selection was still grayed out.
Flashed zui 2.5 Nougat and then clean flashed other Los Nougat ROMs and now Sim selection is working fine.
Thanks for the solution.

SidthConquerer said:
Thanks.
But I think a have found another solution for it.
When I Flash Gapps mini, I have the problem.
But when I Flash Gapps Stock, The default dialer is replaced and then I go to settings and change default dialer to phone(by Google) and sim selection perfect.
Can anyone confirm?
Click to expand...
Click to collapse
I've a same problem haunting me in LOS 14.1, I'll try your solution first...will let you know...
Sent from my ZUK Z1 using Tapatalk

Narasimha12 said:
Is sim selection working on COS, cm13 nightly? What happened when you have flashed zui?
Sent from my Zuk Z1 using XDA Labs
Click to expand...
Click to collapse
my file was corrupt i downloaded it again and bingo. working fine.
thanks

Narasimha12 said:
Hi good fellas, so a week back, I flashed mokee build everything was perfect until I received a WhatsApp message from my friend asking me why the hell am I not picking call when it's ringing. I was like what ? Dude send me screenshot and I got roasted. So I tried finding the root cause and got to know sim selection was grayed out.
Issues were,
1. Not able to select sim selection for calls as nothing happens when you click on the selection area. Data works fine for both Sims, I have not tested with SMS.
2. First sim slot works fine for both incoming and outgoing however on the top it shows the second sim name. For example, in my case I'm using Vodafone (first slot) and Tata DoCoMo, so when I make or get a call to Vodafone, it shows me Tata Docomo.
3. There is no way of making calls from second sim.
What did I do?
1. Downloded NucleaRom latest 1.4.1 did a Clean flash (wipe data, cache, dalvik and system) - Did not work.
2. My saviour in flashing, TWRP backups.
Restored NucleaRom 1.3.5 (which was working fine before) - did not work.
3. Restored NucleaRom MM final version 3.0. did not work.
4. Flashed COS 12.1, Bingo got the selection back ( Damn, it has good battery backup) so used it for couple of days.
7. I couldn't take COS Anymore, so downloded last nightly of cm13, clean flash- success
8. Since I'm so addicted to Nougat I wanted to try my luck, tried lates mokee, NucleaRom, RR, sudamod, Cr Droid but it didn't work in any ROM.
9. Back to COS, clean flash, flashed MM Firmware, then Nougat Roms - did not work.
10. Got some update on Nougat ZUI in its XDA post (thanks to developer), downloded both zip and OTA update,clean flashed. Bingo- selection is back. However ZUI still has force close issues
11. Clean flashed NucleaRom, bingo - selection came back.
Not sure what exactly is the root cause since it persists even after clean flash of other ROMS (which were working before) and also backups. If it happens in one ROM, it happens in most or all the Roms. Even in China based ROM.
So, this is the only solution I found, it worked for me. Let me know if it works or if you have any questions.
Thanks to all the developers of Z1. ?
Click to expand...
Click to collapse
COS 12.1 sim selection was working out of the box.
CM 13 selection was working
LOS 14.1 selection stopped working
Flashed ZUI selection is back
& then clean flashed LOS again selection keeps working
Thanks a lot.
It must be radio baseband issue.
Sent from my ZUK Z1 using Tapatalk

Suggestion
Simply I tried this at my own,
And it worked!
Steps :
1. Install Lineage OS ROM from TWRP. (don't install Gapps)
2. Restart your android.
3. Skip all the startup steps after booting-up.
4. Now go to SIM settings and you see, you are able to select SIM for calls.
5. Select any SIM of your choice.
6. Reboot again into TWRP & install Gapps.
7. Reboot into system.
Now you see, you are able to select any SIM of your choice. :good:

Well...try updating kernel...it worked for me...try radioactive kernel(Radioactive reborn acuicultor) for nougat....here is the process
1)Go to twrp/cwm recovery
2)Perform factory reset and wipe dalvik,data,cache,system
3)first install any nougat rom then install any gapp package for nougat and finally the radioactive reborn kernel for nougat
4)reboot
Bam you are there...should work fine

https://forum.xda-developers.com/zuk-z1/help/network-solution-grayed-solved-t3545218

Can anyone help me in camera issue on nougat....after the clean flash when i open default camera app it works fine in auto mode but when switched to hdr mode then it crashes and says unknown error or cannot connect to camera this error occured in all the nougat rom excpet for los 14.1...Now for los 14.1 camera app works fine for few hours then it lags lije hell touch focus doesnt respond....plzz help

Hello! Im in a bit of a pickle! I have installed the [TWRP]ZUI v2.5.306 through TWRP in hopes to fix the Sim2 slot. Now I cannot access TWRP to try installing Nuclearom back! Now I am stuck with this nougat ZUI. How do I get TWRP back, do I have to ADB Fastboot again? Is it possible that ZUI overwrote my TWRP recovery? Hardware button combination to access TWRP is Vol + and Power at the same time right?

happyflyingipis said:
Hello! Im in a bit of a pickle! I have installed the [TWRP]ZUI v2.5.306 through TWRP in hopes to fix the Sim2 slot. Now I cannot access TWRP to try installing Nuclearom back! Now I am stuck with this nougat ZUI. How do I get TWRP back, do I have to ADB Fastboot again? Is it possible that ZUI overwrote my TWRP recovery? Hardware button combination to access TWRP is Vol + and Power at the same time right?
Click to expand...
Click to collapse
To access the Recovery you have to press the three buttons at the same time (vol+ / vol- / power).
Enviado desde mi ZUK Z1 mediante Tapatalk

happyflyingipis said:
Hello! Im in a bit of a pickle! I have installed the [TWRP]ZUI v2.5.306 through TWRP in hopes to fix the Sim2 slot. Now I cannot access TWRP to try installing Nuclearom back! Now I am stuck with this nougat ZUI. How do I get TWRP back, do I have to ADB Fastboot again? Is it possible that ZUI overwrote my TWRP recovery? Hardware button combination to access TWRP is Vol + and Power at the same time right?
Click to expand...
Click to collapse
Just use "adb reboot recovery" in CMD with USB debugging enabled. Won't have to bother with key combinations. ZUI is installed on system, boot partition, and updates modem partition. Doesn't touch the recovery partition.

No Cellular Signal

So let me start my admitting my mistake. I tried to install a stock image as a secondary ROM using MultiROM. Obviously it didn't work, and I deleted the installation. Everything seemed to be fine, but once I booted back into my current ROM (LOS 14.1) and no longer have any cell signal whatsoever. According to my SIM Status, I am Disconnected.
I tried resetting my Network Settings which didn't help. I'm at the point of trying a fresh install, but wanted to see if anyone had any thoughts first. Could I try flashing the radio?

3 Problems after flashing Superman custom ROM, PLEASE HELP!

Hello everyone,
I tried flashing Superman ROM 3 days and at first i was faced with a problem regarding package installer
the problem was no APK file could be installed either from downloading an APK, Play store or from Samsung apps
so i decided to go back to the STOCK rom after trying a couple of troubleshooting things
i cant install ANY stock rom if i put in a Bootloader it just fails and the phone has to be restarted for a new Download mode start
and now when i install STOCK roms SIM card is not working the phone just wont read them ( either in slot 1 or slot 2 ) and last but not least Samsung account is inaccessible and when i try to login it shows Samsung account has stopped.
any help with ANY of these issues is highly appreciated
EDIT: i forgot to mention what ive tried doing
- downloading separate BL and installing them separately
- installing another custom rom ( same results as Superman ROM )
- changing Modem
- changing CSC
- changing the physical Sim card
- installing marshmallow stock Rom
- clearing cache and app data to all the apps with the mentioned problems
its been 3 days and I've tried everything i can think to solve those problems to no avail

I've had issues before with flashing Superman 2.9 with TWRP 3.2.1.x -- just downgrade to TWRP 3.1.1.0 and try again. Chances are you'll be fine with Superman then.

Sim card not detected
I installed superman rom on my s7 edge, the installation was successful but the sim card was not getting detected, so I decided to install rr os, which I had been using for the past few weeks, and still the problem is not solved, can anyone please help me with this ?

Do a stock software through odin and it should be alright..