Develop Bugs

[Q] US Cellular Galaxy SIII (SCH-R530U) on T-Mobile network

I ordered a Samsung Galaxy SIII (US-Cellular) on ebay and tried to follow the instructions below:
1. Type *#197328640# and it brings up the factory service menu
2. Select (1) UMTS
3. Select (1)Debug Screen
4. Select (8) Phone Control
5. Select (6)Network lock
6. Inside the Network lock menu, Pick option (3) Perso SHA256 off, Passed that is a screen that says something like "no options in this menu, current command is 11863", Wait for 30-60 secs, from there hit the menu button on bottom left of phone to bring up options, Select "Back".
7. The last command should have brought you back into the Network Lock menu, at the bottom is (4) NW Lock NV Data Initialize, Select it. You might be asked a saftey are you sure, some people not, after it begins that process wait a good 60 sec the reboot. Thats it! Phones Unlocked
Somehow the phone is not reacting on the USSD 'secret' codes. I can push the hash-button, but nothing happens. I found on a forum that I should root my phone. So I did through Odin. But superSU keeps crashing and I get the error: Security Notice, an attempt to access a secure area...
I don't really need a rooted phone, would be nice, but I would like to use USSD codes, like *#06# for example.

R530 is CDMA based and might not function correctly on TMo.
Also, USSD codes only work on TW-Based ROMs or stock. Root should have no bearing.

Diego_AL said:
I ordered a Samsung Galaxy SIII (US-Cellular) on ebay and tried to follow the instructions below:
1. Type *#197328640# and it brings up the factory service menu
2. Select (1) UMTS
3. Select (1)Debug Screen
4. Select (8) Phone Control
5. Select (6)Network lock
6. Inside the Network lock menu, Pick option (3) Perso SHA256 off, Passed that is a screen that says something like "no options in this menu, current command is 11863", Wait for 30-60 secs, from there hit the menu button on bottom left of phone to bring up options, Select "Back".
7. The last command should have brought you back into the Network Lock menu, at the bottom is (4) NW Lock NV Data Initialize, Select it. You might be asked a saftey are you sure, some people not, after it begins that process wait a good 60 sec the reboot. Thats it! Phones Unlocked
Somehow the phone is not reacting on the USSD 'secret' codes. I can push the hash-button, but nothing happens. I found on a forum that I should root my phone. So I did through Odin. But superSU keeps crashing and I get the error: Security Notice, an attempt to access a secure area...
I don't really need a rooted phone, would be nice, but I would like to use USSD codes, like *#06# for example.
Click to expand...
Click to collapse
What you are trying to do is unlock the phone from US Cellular to use on T-Mo. If that's the case, you will have to downgrade the firmware to Android version 4.1.1. This does not require Rooting. You will see appropriate firmware on SamMobile.com. Try the same process after the downgrade.
Don't try the downgrade if you are on android 4.3. It will Hard Brick your phone.

GPS Fix - Service Mode Method N900T

Anyone thats tried any s5 ports, note 4, etc.. My Gps didnt lock. doing some research on the N9005 forums and others I figured out how to get the gps to lock. Now i tried this for a s5 port, so let me know if it works for others.
Sources:
http://forum.xda-developers.com/showthread.php?t=2754957
http://forum.xda-developers.com/galaxy-note-3/help/n9005-gps-fix-flashing-stock-s5-port-rom-t2827427
Combined:
On you dialer type in this USSD *#0011# (The stock samsung dialer... third party might show "Connection problem or invalid MMI Code")
Press top right 3 dot menu key > press back
Press top right 3 dot menu key press key input > Q
Press top right 3 dot menu key > press key input > 0000
Wait for a few seconds and the screen options will change
~~~~~~~~
Select option 2 "UE SETTINGS & INFO"
Select option 1 "SETTING"
Select option 2 "SYSTEM"
Select option 3 "NV REBUILD"
Press on System, Protocol, GPS, IMS
Wait for 30 seconds and then shutdown your phone
Power On phone
GPS should work fine now
~~~~~~~~~
Recommend to use GPS STATUS & Tool Box App to do a gps cache reset and download AGPS Data

Use this app. I get gps lock within seconds
https://play.google.com/store/apps/details?id=by.zatta.agps
All you need to do is change the carrier to tmob and leave everything else default

Network lock menu from service mode?

Does anyone know how to get to the network lock from the service more for a sm910a?
i bought a unlock code from the celluar unlock.net..failed...didnt get any PUK error so all good there
ive tried numerious ways of entering the defreeze code and call that still failed... now they want me to do a factory reset and i dont want to do that just yet...
Ive done the non att sim trick...ive done
The following code brought up the network unlock prompt #7465625*638*# tells me unlock cone is sucessful
im trying to get to the network lock function through the service menu. Ive tried :
· Dial *#197328640#
· Press the Menu > Back > Menu
· Open the Key input and enter 1, then press OK
· Press Menu > Back
· Press UMTS > Debug Screen > Phone Control > Network Lock
· Press Options > Perso SHA256 OFF
· Press Menu > Back
· Press COMMON > NW Lock NV Data INITIALLIZ
· Your Samsung Galaxy Note 3 is now SIM unlocked
None of that above gets me there:
This takes me to the debug screen but from there I cant get to the network lock:
Do the same for *#197328640#. That will open the Debug Screen.
service mode *#27663368378#
*#6328378#
One thing I havent tried is because the phone is ATT but I have it on a Straight Talk SIM for the BYOP is to go into the APN settings and switch it from the Straight talk APN settings to the ATT Nextgenphone option and then prompt to do the sim there... NEVERMIND DID THAT AND IT FAILED
Any ideas guys??
Ive read place online to unlock it via usb cable but it says it wipes the data so im wondering how that works
might have to see if there is any option for KIES.....
.....no wonder why people already buy them unlocked...

hello i have a s8 edge how can i get access on network lock menu?

Root work with kingroot 456

Is there a way to unlock 5.1.1. OH1?

I already have root and have tried idones app to unlock, but for some reason, the unlock seems not to be working. The app says the phone is unlocked but when I insert a GSM sim card into the phone, it doesn't get any signal and the hands free activation loops. I was advised to go into settings -> mobile networks -> GSM, but the mobile networks setting disappears when I put in a GSM sim. It comes back if I put my Sprint sim is put back in. I also select GSM on that while my Sprint sim is in but when I take it out, that menu disappears. Is my phone unlocked or is it still locked? If its still locked, what steps can I take to unlock it given my current build and android version?

Idone should b able to help . Go to dialer, dial *#0011# ,
then in service mode press menu > back , then press menu > key input and type "Q" and press enter.
Then press menu > key input and type "0000" thats zero , 4 times .
The rest im copy n pasting from "jayfi" post iver at the us cellular forum
* - UE Settings & Info
- Settings
- Protocol
- NAS
- Network Control
- Band Selection
* Make these selections above
* *Make sure you use the more button in the upper right corner to go back if needed(Back Key on phone will exit menu)
* Choose choice 7 “LTE/GSM MODE ONLY”
* Reboot
* Go to settings/Wireless & networks/more and it will allow you to add the correct APN
* Change preferred network type to LTE
Let me know if you need clarification. I don’t have the phone in front of me currently but am pretty certain that is everything.
^^ after ding this itll go straigbg to gsm connection and bypass the cdma network. Let me know if you need help.

I have done all the steps up to 0000
After all those steps, the Service Mode Menu still looks the same, how do I get to the "UE Settings and Info"? It's not in my settings menu

Sent you a shortcut in pm . Let me know if u need help .

Can this work for the l720

Does your wifi toggles keep repeatedly flashing and turn off. Test my method!

My LG G4 started acting really weirdly and the WiFi would randomly turn off as well as repeatedly flash so i tried this and it began to work perfectly.
1. Go on to dialer
2. Type this code *#546368#*815# in
3. You will enter the secret menu
4. Then click on Field Test
5. Scroll down to wifi test and click on it
6. Then select OTA settings and press enable.
7. Now test wifi
I am not responsible if your phone breaks or something etc.
I really hope it works for you but I can not guarantee it. Let me know if it works for you!:good::fingers-crossed: