Database Users

[Q] Note 3 N900W8 Not letting me choose network

I've been trying to fix since installing the new update at 2pm (PST) today. Finally decided to post a question here hoping someone more knowledgeable can help me fix it.
I bought the phone and it was locked to Bell so I bought a code and was using it on Fido. I flashed the Telcel 4.4.2 update and after I flashed all the files it worked (I tried not flashing modem). When it started I got a screen that said "Network Lock" with only a dismiss button (i.e. nowhere to put re-input my unlock code). If I click it 3 times it lets me into device. In the status bar it says "Invalid SIM card" "Network locked SIM card inserted". When I try to make a call I get "Not registered on network"
I've also tried flashing my old modem.bin via ODIN but that just cause the phone to boot and vibrate a bunch. I was able to get into settings but no option for Network Operator or APN.
The network doesn't work but WiFi and everything else does. So I rooted using the new N9005 root. Added APN settings, and of course, looked for network operators. Fido doesn't show up but all other carriers do (except Chatr).

I'm in the same situation as you are but which new N9005 root are you talking about? I'm on Rogers so if I can use that to get my signal back, that would be awesome.

zerojay said:
I'm in the same situation as you are but which new N9005 root are you talking about? I'm on Rogers so if I can use that to get my signal back, that would be awesome.
Click to expand...
Click to collapse
Here>> https://plus.google.com/+Chainfire/posts/QbVy3arpymx
Please post back if you find anything. I've been looking all day and I've given up for the night.
Don't forget to say thanks

JamesKroll said:
Here>> https://plus.google.com/+Chainfire/posts/QbVy3arpymx
Please post back if you find anything. I've been looking all day and I've given up for the night.
Don't forget to say thanks
Click to expand...
Click to collapse
I got the autoroot installed and working fine. It says invalid SIM.
Previously, I had installed the firmware without flashing the CSC and I don't remember having sim lock issues then (as the Telcel specific files are not flashed) however you have to deal with the Samsung keyboard repeatedly crashing, so you have to find a way around it.
So my suggestion is reflash without the CSC file and brainstorm a way to put another keyboard on it without needing to input anything first (so Google Play is a no-go), probably side load a keyboard apk through ADB or something. Going to give it a shot.
---
The keyboard idea worked fine. Unfortunately I did still get the region/sim lock stuff because everywhere outside of Canada seems to have it turned on and the ROM defaults to tmobile without the CSC apparently. I've decided to bite the bullet and just pay for an unlock as I was planning to do so anyways.
---
And that worked until I rebooted and it asked for a SIM unlock code... well... damn. I'm just going to try to flash a rom with region/sim locking removed. Ugh.
Looks like we can fix this by downgrading or creating our own Rogers files: http://forum.xda-developers.com/showthread.php?t=2608178&page=54

I have the CSC and modem.bin. Tested and working (remember, I flashed PIT as said here http://forum.xda-developers.com/showpost.php?p=49512809)
https://www.mediafire.com/?yjdgd4j8s72bo46

I rolled my own too. Working fine.
Sent from my SM-N900W8 using Tapatalk

hi i just found this thread, i have a rogers note 3, unlocked to virgin, i just flashed the mexican rom. it was working the first time but i messed something up so i had to reflash it, and on this second flash it now says region locked sim. and heres the bad news. the original unlock code IS NOT WORKING ANYMORE. wtf do i do now?

evil-doer said:
hi i just found this thread, i have a rogers note 3, unlocked to virgin, i just flashed the mexican rom. it was working the first time but i messed something up so i had to reflash it, and on this second flash it now says region locked sim. and heres the bad news. the original unlock code IS NOT WORKING ANYMORE. wtf do i do now?
Click to expand...
Click to collapse
Same thing was happening to me. Just follow the instructions in my previous post.

Receiving "SIM card from unknown source" on unlocked S5??

hi all,
short story: Friend on T-Mobile needed a new phone. I bought them a Unlocked Americas S5 (SM-G900H) on amazon. They received it today. Swap sim cards from their damaged s4. Have them set it to global in network settings, have them change the ADN, and a couple other settings to get it to work on T-Mobile. Find out what was sent was a unlocked Verizon S5 model (SM-G900V) according to their system info screen. They also see Verizon apps installed and whatnot, and bootloader. Either way, they are able to receive data, text, calls. And they are getting 4GLTE just fine (shows and detcts it as tmobile, and they can download and browse the net, no issues), not HPSA+. Work like a charm as far as data and voice go.
However, only one issue.... they keep getting a "SIM Card is from a unknown source" warning on the taskbar that's just annoying. I had them root their phone, install supers, and install a root file browser after finding some information to freeze or remove "vzwphoneservice.apk" which seems to fix this same issues for others on older android phones. Problem is, its not there... not in system\app and not in system\priv-app where it should be. They use 4.4.2 kitkat. So I check my own note 3, which is also Verizon and has 4.4.2 kitkat. Im rooted, check same folders, that file is not in either of those directories.
To me, its apparent Verizon has changed the filename. Just trying to find out what it is so I can freeze or remove it to get rid of that Verizon "SIM Card from unknown source" warning.
Any suggestions or ideas? would be greatly appreciated

capta1ntr1ps said:
they keep getting a "SIM Card is from a unknown source" warning on the taskbar that's just annoying.
Click to expand...
Click to collapse
Confirm that both vzwphoneservice.apk and vzwphoneservice.odex are renamed or removed. You may also need to rename VzwController.apk and VzwController.odex and clear your phone cache (from recovery mode).
These are Verizon setup files and it is looking for an encrypted SIM that CDMA carriers like to use. The above should vanquish the message unless you have really rotten luck vis a viz Verizon having added yet another Kitkat setup package.
.

capta1ntr1ps said:
hi all,
short story: Friend on T-Mobile needed a new phone. I bought them a Unlocked Americas S5 (SM-G900H) on amazon. They received it today. Swap sim cards from their damaged s4. Have them set it to global in network settings, have them change the ADN, and a couple other settings to get it to work on T-Mobile. Find out what was sent was a unlocked Verizon S5 model (SM-G900V) according to their system info screen. They also see Verizon apps installed and whatnot, and bootloader. Either way, they are able to receive data, text, calls. And they are getting 4GLTE just fine (shows and detcts it as tmobile, and they can download and browse the net, no issues), not HPSA+. Work like a charm as far as data and voice go.
However, only one issue.... they keep getting a "SIM Card is from a unknown source" warning on the taskbar that's just annoying. I had them root their phone, install supers, and install a root file browser after finding some information to freeze or remove "vzwphoneservice.apk" which seems to fix this same issues for others on older android phones. Problem is, its not there... not in system\app and not in system\priv-app where it should be. They use 4.4.2 kitkat. So I check my own note 3, which is also Verizon and has 4.4.2 kitkat. Im rooted, check same folders, that file is not in either of those directories.
To me, its apparent Verizon has changed the filename. Just trying to find out what it is so I can freeze or remove it to get rid of that Verizon "SIM Card from unknown source" warning.
Any suggestions or ideas? would be greatly appreciated
Click to expand...
Click to collapse
did you ever figure this out ?

One post wonders. New members who solicit our help to solve their issue. But they don't have the courtesy to even let us know how the situation resolved. Perhaps it's an outright waste of time to try helping people with less than n posts.
.

fffft said:
One post wonders. New members who solicit our help to solve their issue. But they don't have the courtesy to even let us know how the situation resolved. Perhaps it's an outright waste of time to try helping people with less than n posts.
.
Click to expand...
Click to collapse
Hey guys, please don't feel that way. I am actually having the exact same issue, however I am unable to locate the files specified. Can you please direct me where to find these files? I will respond to let you know if it worked or not.
Thanks,
Ron

rwestbrookjr said:
I am actually having the exact same issue, however I am unable to locate the files specified. Can you please direct me where to find these files? I will respond to let you know if it worked or not.
Click to expand...
Click to collapse
Welcome to XDA.
It would be good if you started a new thread though, rather than hijack someone else's thread on a similar topic.
Tell us what you tried looking for (filenames, where.. using what app, etc. and what phone model you have.. as many details as you can) and lots of us will try to help you out.
.

fffft said:
Welcome to XDA.
It would be good if you started a new thread though, rather than hijack someone else's thread on a similar topic.
Tell us what you tried looking for (filenames, where.. using what app, etc. and what phone model you have.. as many details as you can) and lots of us will try to help you out.
.
Click to expand...
Click to collapse
Ok, I created a new thread here. Thank you for the quick reply!

Galaxy S4 SM-S975L questions/issues.

Long time reader and tinkerer, but first time poster... This is a two-part thread:
I picked up a cheap used Samsung Galaxy S4 phone, hoping to unlock it and use it. When I received it, it was a SM-S975L, which I can barely find any information on:
Model number: SM-S975L
Baseband version: S975LUDUANB1
Kernel version: 3.4.0-2485535 [email protected] #1 Tue Feb 4 17:57:30 KST 2014
Build number: JSS15J.S975LUDUANB1
SE for Android status: SEPF_SM-S975L_4.3_0017
Product code: SM-S975LZKATFN
Current firmware on my phone: www DOT sammobile DOT com/firmwares/3/?download=28755
Part 1: Custom ROM.
I want to use a Google Edition ROM instead of the bloatware that comes on carrier devices. I'm unable to find a recovery for the SM-S975L, much less a custom ROM though. Is anyone out there that would entertain the idea?
PARt 2: SIM Unlock.
With my sim in the phone, a SIM Unlock code screen doesn't pop up on its own. I typed #7465625*638*# into the dialer and it did finally appear. I was able to successfully sim-unlock it once. But after a phone reboot, the phone was re-locked and the sim unlock code I previously used no longer works. Has anyone ever had this happen? I would like a permanent solution to sim-unlock.
Thanks!

Hi jeredh....I have the same questions as I just ordered this model. Have you solved or tried out anything on your 2 questions?
-JC

I wound up selling it and changing to an S5 Active. No luck at all finding anyone or anything for that phone.

Another purchaser of the S975L here. Thought $249 was a great deal for this phone, but got home and realized that it's actually a really locked down phone. No permanent way to unlock it (unless you own it for a year in which case Tracfone will unlock it), bootloader is locked, no one has developed a custom ROM for it, and the complete tethering framework has been removed (so not even rooted tethering apps will work). It's a good bet that Straight Talk will never update the firmware on it either. That last one is a huge bummer because Android 4.3 is *okay* for now, but KitKat has been out for a while, and Lollipop will be ported very soon. It's fantastic hardware gimped by awful software. A shame really. I'll probably hang on to this phone for a little while since it's a definite improvement over my old iPhone 4S, but I'd like to move to something I have a little more control over.
The only solace I have is that it's easily rootable using TowelRoot.

Follow this post http://forum.xda-developers.com/galaxy-s4/help/how-to-unlock-galaxy-s4-straighttalk-sm-t2816029 aromerblz is making nice progress. Twrp can be installed just fine. Read the thread

jeredh said:
Long time reader and tinkerer, but first time poster... This is a two-part thread:
I picked up a cheap used Samsung Galaxy S4 phone, hoping to unlock it and use it. When I received it, it was a SM-S975L, which I can barely find any information on:
Model number: SM-S975L
Baseband version: S975LUDUANB1
Kernel version: 3.4.0-2485535 [email protected] #1 Tue Feb 4 17:57:30 KST 2014
Build number: JSS15J.S975LUDUANB1
SE for Android status: SEPF_SM-S975L_4.3_0017
Product code: SM-S975LZKATFN
Current firmware on my phone: www DOT sammobile DOT com/firmwares/3/?download=28755
Part 1: Custom ROM.
I want to use a Google Edition ROM instead of the bloatware that comes on carrier devices. I'm unable to find a recovery for the SM-S975L, much less a custom ROM though. Is anyone out there that would entertain the idea?
PARt 2: SIM Unlock.
With my sim in the phone, a SIM Unlock code screen doesn't pop up on its own. I typed #7465625*638*# into the dialer and it did finally appear. I was able to successfully sim-unlock it once. But after a phone reboot, the phone was re-locked and the sim unlock code I previously used no longer works. Has anyone ever had this happen? I would like a permanent solution to sim-unlock.
Thanks!
Click to expand...
Click to collapse
If you have the unlock code and root, then follow this.
1. install samsung phone info tools from the market. Run it and allow super user access on it.
2. Press menu and go to secret codes, and let it load.
3. Once generated scroll until you find 7465625*638* you should see two. One that says unlock and other says lock.
4. Select the one that says lock. Press it and select "launch 0" on MCC/MNC field enter your carriers MCC/MNC code.(google it if you dnt know it) on the Control Key enter unlock code. Press ok.
5. Select the 7465625*638* that has unlock on it, press launch 0, enter unlock code. Press ok.
6. Hit thanks, device should be unlock with no neet to reboot.
**You need to do this everytime you turn off, turn on, or restart the phone.
Question: Wondering how you got the unlock code?

WAITING
Hello,
I will follow the question, how did you manage to get a code?
I really want to at least unlock my phone to use it,
I know aromerblz is going to make a guide, I have to wait and try it, I am really not having idea what to do to make it work

NO UNLOCK CODE for Permanent Unlock!
.
An UNLOCK CODE for this phone only TEMPORARILY unlocks it.. everytime you power off and phone on OR restart it then it will ask for the code again.. This phone is very well programmed and cannot be permanently unlocked. This is a Straighttalk phone.. its not meant for other carriers.. if you bought this thinking you were getting a deal you were probably wrong.

network unlock
if I purchase a code from a third party and I enter it everytime I reboot does it work on the other network everytime ?

Sm-s975l unlock info
This model is permanatly unlockable through Straighttalk after a 1yr of active service ( If you are late adding time & if your phone deactivates, you must begin the 1yr requirement from the begining )
But good News there are 2 compatible Models of the S4 you can use to Customize your SM-S975L.
Most ROMS are compatible. You will need to have your Device "ROOTED" with Custom Recover Software.
Just my advice use TWRP as Cmod tends to Brick Devices " Just from Personal Experience "
The M919 - Forums General Location
http://forum.xda-developers.com/galaxy-s4-tmobile
The I9505 - Forums General Location
http://forum.xda-developers.com/galaxy-s4
The Most Compatible ROM for the SM-S975L was Created by a Very Talented Developer "The Sickness"
Download V11 4.4.2 & the Mod File. Now Boot into Recovery Flash the Rom 1st following the instructions provided on the download page allow the 1st boot up to complete. Name your phone & all that other fun setup info Stuff. Then reboot into Recovery, & do a advance wipe on Cache & Delvic lol & you can now flash the MOD pack, I recommend choosing the Ktweaker OC Kernel by Ktoonz you can pplay around with the other Mods but be warned the S5 Mods Tend to cause device errors with settings/menu/&keyboard. This rom http://forum.xda-developers.com/showthread.php?t=2683507
DONT LET ANYONE TELL YOU THE INSANE HYBRID 4.4.4 ROM UPGRADE IS BETTER ITS NOT THAT ROM IS BLOATED AND SLOW AS DIRT
There aren many ROMs to choose from icecream sanwich to marshmellow But none as good as "Sickness's" INSANE KITKAT Versions Vary but the Only Rom that comes even Close is SPIKE LABS 4.4.4 GAMING ROM with kernel juicer but its still a bit jittery at times when the GPU is pushed & games are Drawing Heavily On Your Device..
As far as the Baseband is concerned you can remove it and attempt to upgrade it Via ABD pull & push. " Aquire ABD & fastboot files & launch CMD W/ADMIN RIGHTS" & it is possible to use ABD CMDs to remove & apply another Basebamd but this could super brick your Device if it is not unlocked.
Hope this Helps Lot Peeps

aromerblz said:
If you have the unlock code and root, then follow this.
1. install samsung phone info tools from the market. Run it and allow super user access on it.
2. Press menu and go to secret codes, and let it load.
3. Once generated scroll until you find 7465625*638* you should see two. One that says unlock and other says lock.
4. Select the one that says lock. Press it and select "launch 0" on MCC/MNC field enter your carriers MCC/MNC code.(google it if you dnt know it) on the Control Key enter unlock code. Press ok.
5. Select the 7465625*638* that has unlock on it, press launch 0, enter unlock code. Press ok.
6. Hit thanks, device should be unlock with no neet to reboot.
**You need to do this everytime you turn off, turn on, or restart the phone.
Question: Wondering how you got the unlock code?
Click to expand...
Click to collapse
I was in the same boat, had an unlock code, it worked one time then after a reboot it would not accept the unlock code. I happened upon this post (while I was searching for the stock ROM to reload on it), and decided "what the hell let me try these steps"....it works. I don't mind going through these steps on each reboot. Infact I made it a bit easier, I installed Shortcut Master (Lite) and made two short cuts, one for the lock and one for the unlock.
Thank you for posting these steps.

erichss said:
I was in the same boat, had an unlock code, it worked one time then after a reboot it would not accept the unlock code. I happened upon this post (while I was searching for the stock ROM to reload on it), and decided "what the hell let me try these steps"....it works. I don't mind going through these steps on each reboot. Infact I made it a bit easier, I installed Shortcut Master (Lite) and made two short cuts, one for the lock and one for the unlock.
Thank you for posting these steps.
Click to expand...
Click to collapse
You are welcome..

aromerblz said:
You are welcome..
Click to expand...
Click to collapse
Though I do have a question. Are there any ROMs out there that are based on Android 5.x that will work with this? I tried flashing Cyangenmod but the "secret" codes needed don't seem to work at all, infact Phone Info only shows like 12 or 13 codes.

erichss said:
Though I do have a question. Are there any ROMs out there that are based on Android 5.x that will work with this? I tried flashing Cyangenmod but the "secret" codes needed don't seem to work at all, infact Phone Info only shows like 12 or 13 codes.
Click to expand...
Click to collapse
Yes there is.. Any TW based ROM for the SGH-M919 or GT-I9505 works for this phone. CM, AICP or ASOP ROM's do not work as they lack the perso codes for unlock.

aromerblz said:
Yes there is.. Any TW based ROM for the SGH-M919 or GT-I9505 works for this phone. CM, AICP or ASOP ROM's do not work as they lack the perso codes for unlock.
Click to expand...
Click to collapse
Thanks.
You happen to have links to them?

erichss said:
Thanks.
Click to expand...
Click to collapse
Clarification, they do work if you live in the USA as you will still use with TracFone service. But to uses on another carrier you need the unlock code and a TW based custom ROM. Where you got your code?

aromerblz said:
Clarification, they do work if you live in the USA as you will still use with TracFone service. But to uses on another carrier you need the unlock code and a TW based custom ROM. Where you got your code?
Click to expand...
Click to collapse
I got my code from imei-unlocker.com
Like I mentioned in my original reply, the code worked once then after a reboot it was locked and the code was not working. But with the steps that was posted, I am able to use my T-Mobile SIM and just go through them steps after each reboot.
Oh and the best part, the site actually refunded my money cause I was working with them as to why the code stopped working.

erichss said:
I got my code from imei-unlocker.com
Like I mentioned in my original reply, the code worked once then after a reboot it was locked and the code was not working. But with the steps that was posted, I am able to use my T-Mobile SIM and just go through them steps after each reboot.
Click to expand...
Click to collapse
Oops, missed that. Cool then.

aromerblz said:
Oops, missed that. Cool then.
Click to expand...
Click to collapse
It's all good. Just need to find a TW based ROM now. Thanks
If you have links to any that you know to be decent, it would be much appreciated

Straight Talk SM-S975S unlock
This phone is unlockable by design. The only way Straight Talk gets around the" unlock law " is they offer you a credit towards another phone, my offer was $100. I have a friend that works for Samsung and he researched it at work, talked to the tech's and was
told Straight Talk ordered the phones this way to stop people from buying their cheap phones then switching companies.

Please Help: Trying to add Sprint CDMA/LTE Bands to my VZW G900V

I have a G900V bootloader unlocked currently running CM 13 and I would like to add Sprint CDMA & LTE bands so I can use a The Peoples Operator SIM card in an area that has better Sprint coverage than VZW. I read over this Guide on adding GSM & LTE Bands to the G900V and calculated the binaries to add the bands:
CDMA 0,1,10
LTE 2,4,13,25,26,41
CDMA Binary 10000000010
LTE Binary 100000000000000110000000000010000000010100
All set to go but I can't seem to get figure out how to get into USB Settings to change from AP to CP and MTP + ADB to RNDIS + DM + Modem, the dialer codes just don't seem to work even after changing efs/carrier/hiddenmenu from OFF to ON. I took a look at EFS Pro but it doesn't seem to have an option to Change from AP to CP. Any help would be greatly appreciated.

If your trying to get into diag mode this will do it running cm13.
http://forum.xda-developers.com/showthread.php?t=1626638

jbgtenn said:
If your trying to get into diag mode this will do it running cm13.
http://forum.xda-developers.com/showthread.php?t=1626638
Click to expand...
Click to collapse
Thank yo for the link. Sadly I couldn't get the scripts to work on my G900V S5 CM13. But that link ended up leading me to this one CM13 QPST Editing files is a little above my paygrade so to speak, I've been following directions for years but still a total newb at most of this stuff but I am hoping I'm on the right track.

twolostminds said:
Thank yo for the link. Sadly I couldn't get the scripts to work on my G900V S5 CM13. But that link ended up leading me to this one CM13 QPST Editing files is a little above my paygrade so to speak, I've been following directions for years but still a total newb at most of this stuff but I am hoping I'm on the right track.
Click to expand...
Click to collapse
It should work. Are you running the diag.sh script? I have same phone and cm13 and it works for me.

jbgtenn said:
It should work. Are you running the diag.sh script? I have same phone and cm13 and it works for me.
Click to expand...
Click to collapse
I run DIAG.SH and it just hangs there. I think I am going to do a fresh install of CM13 later this week and give it another shot.

this is what i'm trying to figure out, because i can get a good local S5 VZW but SPR use different LTE bands.
i know typically the saying is never flash anything for a different carrier of your model, but some people seem to do it with a ymmv statement, wondering if this may be the easier route to get it to just work like a native phone.
i've read several threads from people talking about carrier rom swap, some casually saying sure it can work, but no updates from OPs or others that said they would try, definitively saying that it worked or failed.
so... has anyone literally gotten something like the Odin flashable firmware at sammobile or someplace for the Verizon VZW sm-g900v and flashed it with the Sprint SPR sm-g900p stock firmware, completely changing its baseband, modem, everything so it now identifies and works the same as a Sprint phone?
or should i just keep waiting for another similarly cheap S5 bundle in a Sprint flavor?

Did you try *#0808#
Sent from my SM-G955U using Tapatalk

twolostminds said:
I have a G900V bootloader unlocked currently running.......
Click to expand...
Click to collapse
I've never added any bands to my G900V myself but, I do know that it's plausible to do this.
From what I can tell, the only bands that are needed that the SM-G900P has vs the SM-G900V are specific to the 4G LTE.
Though I did confirm this using a few different locations, I believe that the following link is the best choice in viewing the comparisons between the two devices.
https://www.phonemore.com/compare/p...m-g900v-vs-samsung-galaxy-s5-sm-g900p/4561723
With that guidance...
The following link is one of the Guides available on the forum for adding Bands to a GS5. It was closed but, not because it wasn't working. It was closed because of the negative interactions from various members in there but, the guide and downloads are still good.
https://forum.xda-developers.com/showthread.php?t=2886059
Please Note the success stories on the second post...
The following is another guide as well. Though, it's located within the Galaxy Note 4 area, you could say that the Galaxy Note 4 is the "Note" counterpart to the Galaxy S5.
https://forum.xda-developers.com/showthread.php?t=3160864
Please Note that the OP does reflect some S5 information as well...
Those are just 2 thread examples to help accomplish what you're looking to do.
I do wish you the best of luck and hopefully the next post here will reflect your success!
~~~~~~~~~~~~~~~
I DO NOT provide support via PM unless asked/requested by myself. PLEASE keep it in the threads where everyone can share.

thanks for the double check.
it looks like those are some of the threads and sites i've looked through already as i wanted to be sure i had the proper lte bands that the Sprint model came with, and it seemed possible.
however, with the increasing coverage of cybersecurity, i am increasingly hesitant the more closed source and leaked tools are involved (especially when i see some thread guides that have a mod edit for malicious download link removal).
i suppose i should just pass on the Verizon listing, and wait to spot a similarly good deal from a local person selling their personally cared for Sprint S5 plus spare battery charger case and 2nd battery all under $100 (i'm sure you can understand why i wanted to "make it work", hehe).

S7edge SM-G9350-NO 4G DATA**I WILL DONATE $50-$100 TO WHOEVER GIVES ME THE SOLUTION**

The exact model is Samsung Galaxy S7 edge SM-G9350 64 GB GOLD PLATINUM
First I want to get this off my chest. I registered this week (I used XDA before like 7 or 8 years ago in high school when I use to flash custom ROMS on windows mobile phones-good times hehe)because I am frustrated since I bought an unlocked Samsung Galaxy S7 edge from a stranger using craigslist on Sunday night. The ad said it was T-mobile Unlocked and in brand new condition with the box and original accessories and it had some pictures.So why not buy it cheap for since I'm using a T-mobile LG-K7 with a cracked screen,right?WRONG!! The phone is working fine except I am only getting EDGE data!!! I found out that it is a chinese variant and it works fine with my T-mobile sim card here in the U.S.A except it can't connect to 4G and that is probably why the shady guy sold the phone cheap to let it become someone else problem I also saw 1 or 2 of these models in the box as well and he said a friend gave it to him and he is just selling it(B.S.) I forgot craigslist had scammer like 40% of the transactions lol, I use to meet these types of people in middle and high school when I bought and sold my used or old T-mobile phones though I never scammed or conned any one.I remember some people would act shady or too nice for no reason,probably cause they stole the phone and were making 100% profit off me.This same guy is one of them.
ANYWAYS THANK YOU FOR READING MY RANT---- NOW ON TO THE POINT OF FIXING THE DATA ISSUE
I am getting unlimited 4G on my k7 and everyone else on our plan is using unlimited 4g just fine.Samsung rep at best buy said its legit and its an international chinese variant and to look around on here to fix the issue. He told me something about the band and t-mobile towers to pick up the frequency. He said I got a really good deal if I can 4g on there. If not than re-sell it and make it someone elses problem. I looked all around google the past few days an either no one has this problem or if they do than the solution doesn't work on my phone.
Here is what I tried so far:
A) T-mobile reset the network connection via tech support
B) I factory reset the phone numerous times
C)I got the right APN settings set on the phone to be connected to nearest towers, a store rep did it for me to make sure.
D) I replaced and used another activated T-mobile sim card
E) I download some apps I saw on here to check LTE signal etc and its running very slow edge
*********I am on the sim status screen and right now as I'm typing this the signal strength is
-61 dBm 26 asu,cellular network type is EDGE,NETWORK is T-mobile, Service state is In service,Roaming is not roaming,cellular network state is disconnected*******
------I hope someone can pick up information off of that and maybe I could change some settings
E) I dialed *#*#4636#*#* and got to a screen to allow me to check phone information,battery information,usage statistics,wi-fi information-under phone information there are options to set preferred network types to: WCGMA,GSM, GSM auto(PRL), CDMA auto(PRL),CDMA only,EvDo only,GSM/CDMA auto(PRL),LTE/CDMA auto(PRL),LTE/GSM(PRL),CDMA auto(PRL),LTE only,Unknown. It will only stay on up to GSM auto(PRL)
....also when I press menu on this screen there is an option to enable data connection and when I click it,it won't stay,it just keeps saying enable data connection
F)I googled what bands this model and it is able to use and it has the capability to be used on T-mobile bands
What else can I do get the data working to 4G right now? The phone is running Android 6.0.1 and won't update to Nouget over the air. I want to root the phone and see if I can install a custom Nouget rom( since the samsung guy said the phone will brick if I try to install the T-mobile Nouget rom or I can't even do it since its an international variant-by the way I am able to have google services on here like play store,etc. so I don't know if that makes a difference to what variant and rom it is because I heard one or the other of hong kong or open china variants for this phone is better and can't use google play)and maybe I am able to connect to 4G data.
Like the title of this post says, I promise I will back up my donation I really don't want to sell the phone unless I have to because I will not get a better deal anywhere ever again for the latest high end phone from a manufacturer

Quick search gives this https://forum.xda-developers.com/s7...g9350-nougat-final-hkrom-alpha-02-18-t3558844
Sent from my SM-G935V using Tapatalk

you have to flash the correct CSC this will fix your 4G if you buy an device from a other country than is it possible that you get this problem but when you flash the correct CSC you will get 4G i helped so much people with this problem with a S7 device, i think this your solution
if this fix works for you just keep your money we are developers not for paying

Maybe you should post this in the T-Mobile section.
In my idea this should have 4G data on T-Mobile US out of the box as the required LTE bands are supported by the G9350. Did you check the APN settings? (VoLTE and WiFi-Calling may or will not work without t-mo-rom but that's another topic)
Also you should be fine to flash a T-Mobile US rom as both have Snapdragon SoC. You don't need root to flash an official rom.
Out of curiosity: what about 3G?

rientkill1 said:
you have to flash the correct CSC this will fix your 4G if you buy an device from a other country than is it possible that you get this problem but when you flash the correct CSC you will get 4G i helped so much people with this problem with a S7 device, i think this your solution
if this fix works for you just keep your money we are developers not for paying
Click to expand...
Click to collapse
Thank you so much!!! People have actually asked through pm to donate to bitcoin first before helping me and here you are helping me first by the way.
I am going to find the correct CSC, what does that stand for? Can I flash a T-mobile 7.0 Nougat rom on my Galaxy SM-9350 first that the person before you replied about(its the link)?? I want to do both to have T-mobile settings and to use the 4G although the 4G is a thousand times more important. If I can do this than I am a happy man!
Why is there a boot loader and modem link attached to every post containing a ROM download? Does that need to be downloaded first,and what are the next steps,if so? I know these are questions I need to search about they are all confusing and mumbled and jumbled up. Even though I registered this week for help I was a member here like 8-9 years ago in high school when I was flashing custom ROMS on Windows mobile phones(good times hehe) but it got addictive,took a lot of my time from studying, and I totally forgot how do things.

andiling said:
Maybe you should post this in the T-Mobile section.
In my idea this should have 4G data on T-Mobile US out of the box as the required LTE bands are supported by the G9350. Did you check the APN settings? (VoLTE and WiFi-Calling may or will not work without t-mo-rom but that's another topic)
Also you should be fine to flash a T-Mobile US rom as both have Snapdragon SoC. You don't need root to flash an official rom.
Out of curiosity: what about 3G?
Click to expand...
Click to collapse
Hey I made a new thread today in Q&A for GS7. The APN settings were put in by a T-mobile store associate and it still didn't work. I don't care about VoLTE/Wifi-Calling although I noticed some people on here are worred about that-its just something I never use.
Are you sure I don't need root to flash an official ROM?The Samsung Galaxy guy at Best Buy said it would brick if I used an official ROM because the phone is an international variant. If I can use an official ROM,I can't get Nougut OTA via T-mobile anyway as my phone keeps saying it is updated even though it is 6.0.1. How do I get the offical ROM manually on the computer? Samsung Smart Switch isn't even recognizing my device when it is connected and Smart Switch on my phone looks like it is only suppose to be used to receive files from another phone? I have the link for a T-mobile 7.0 ROM from a post on here that he used on the same exact model I don't know if I am suppose to root the device first or not yet since it looks custom made.
Thank You for helping me out it means a lot you guys are the best! I can already see myself on here a lot in the future doing stuff different android phones like I 8 or 9 years ago in high school on windows mobile phones.

andiling said:
Maybe you should post this in the T-Mobile section.
In my idea this should have 4G data on T-Mobile US out of the box as the required LTE bands are supported by the G9350. Did you check the APN settings? (VoLTE and WiFi-Calling may or will not work without t-mo-rom but that's another topic)
Also you should be fine to flash a T-Mobile US rom as both have Snapdragon SoC. You don't need root to flash an official rom.
Out of curiosity: what about 3G?
Click to expand...
Click to collapse
The only data I am getting is EDGE

So, I guess something is wrong.
You can try flashing the designated firmware for this device first and see if this helps. To get the right one (who knows what all was tampered with) use best the Phone Info tool.

I've had this exact issue before, with a Nexus 5 that I bought from Telus, I am with Telus, it ended up being I had to go buy and register a new SIM card, then it was fine, might not be a solution for you but Worth a try,
Actually get a SIM card from your provider, have them register it in the store
Sent from my SM-G935W8 using XDA-Developers Legacy app

Thanks I did that yesterday already and it still didn't work
I am a member because the owner hates the Iphone and I respect that

What would be the correct CSC file for this device? I tried to flash CSC from a SM-G935t firmware and it didn't work even though she said it didn't matter lol(senior member too)
I am a member because the owner hates the Iphone and I respect that

I'm going to try to find an official U.S. T-mobile ROM and flash with odin...but does it have to be specifically for SM-G9350? I don't think I can find one for that......
I am a member because the owner hates the Iphone and I respect that

1) Download this https://dl.twrp.me/hero2lte/twrp-3.1.0-0-hero2lte.img.tar.html and WAIT.
2) Download superman ROM: https://www.androidfilehost.com/?fid=817550096634750162
I choosed this rom cause it got nougat bootloader and kernel. Also download CSC chooser zip: https://www.androidfilehost.com/?fid=745425885120710484
3) Install twrp via ODIN and uncheck auto reset in odin. Then press power + home + volup to go to recovery. Put the superman rom and CSC chooser zip files on Sd card and put back in phone.
4) Install Superman rom,in aroma pick superstock kernel 'samsung pay and knox work' and install/update everything especially the bootloader. In mods stick to stock as possible.
5) Install the CSC zip file and choose t-mobile USA.
6) reboot and pray everything works LOL
I'm not responsible for any damage that might occur but if ir worked donations are welcome to help a medical student here

modaifallah said:
1) Download this https://dl.twrp.me/hero2lte/twrp-3.1.0-0-hero2lte.img.tar.html and WAIT.
2) Download superman ROM: https://www.androidfilehost.com/?fid=817550096634750162
I choosed this rom cause it got nougat bootloader and kernel. Also download CSC chooser zip: https://www.androidfilehost.com/?fid=745425885120710484
3) Install twrp via ODIN and uncheck auto reset in odin. Then press power + home + volup to go to recovery. Put the superman rom and CSC chooser zip files on Sd card and put back in phone.
4) Install Superman rom,in aroma pick superstock kernel 'samsung pay and knox work' and install/update everything especially the bootloader. In mods stick to stock as possible.
5) Install the CSC zip file and choose t-mobile USA.
6) reboot and pray everything works LOL
I'm not responsible for any damage that might occur but if ir worked donations are welcome to help a medical student here
Click to expand...
Click to collapse
Nice, I like what you have! My model is different so I don't know if the ROM will work though I'm almost finished downloading it at the moment. Instructions 3 and 4 is confusing. Don't I need to put superman ROM and CSC file on sd card while the phone is ON?And am I suppose to transfer it on there via usb cable or can I also do it via google drive than open in up phone gmail and put it on sd card? Also do I need to extract the CSC file first to my computer desktop? That file takes forever to extract! Is instruction 4 suppose to be while in recovery mode? Also is it normal for my phone to show "no command" while in recovery mode?

Thank you ?
The rom will work because your phone is exynos based. It got a different model number because it's for Chinese markets. Put the rom on the SD card using whatever method, just do it before flashing the recovery, because your phone may not boot after the recovery to the stock firmware because Samsung has put some crap to prevent using custom firmware. I forgot to say that also before doing anything go to device info - > software - > and press build number several times to enable developer options then back to settings and go to developer options and enable OEM unlocking.
Yes, commands 4 are made in recovery. Install - > pick the zip file and install.
All zip files aren't extracted! The recovery uses the zip file as it is.
Good luck

okaythan24 said:
I'm going to try to find an official U.S. T-mobile ROM and flash with odin...but does it have to be specifically for SM-G9350? I don't think I can find one for that......
I am a member because the owner hates the Iphone and I respect that
Click to expand...
Click to collapse
Were you able to flash the U.S. T-mobile ROM onto SM-9350?
The official firmware can be found on https://www.sammobile.com/firmwares/database/SM-G935T/

I found it yesterday but their free server is under maintenance so he will have to pay to just download a firmware file.
I don't know why don't samsung provide them for free on their site!