So i have a friend who flashed some Roms on his straight talk s5, and now he's getting a no sim error. Anyone have any idea what's wrong?
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I have a Cricket Galaxy S4 (SCH-R970C) with baseband version R970CVVUAMI3
I tried to sim unlock my phone through this method http://forum.xda-developers.com/show....php?t=2283068.
I did follow all the steps but when I insert another sim (T-mobile), I got an "Invalid Sim" pop up message.
I am thinking of trying this method, but I don't know if it is safe to do so.
is there any way to back up my phone(baseband, etc...) just in case everything screwed up during this process?
do you find the solution
raclimja said:
I have a Cricket Galaxy S4 (SCH-R970C) with baseband version R970CVVUAMI3
I tried to sim unlock my phone through this method http://forum.xda-developers.com/show....php?t=2283068.
I did follow all the steps but when I insert another sim (T-mobile), I got an "Invalid Sim" pop up message.
I am thinking of trying this method, but I don't know if it is safe to do so.
is there any way to back up my phone(baseband, etc...) just in case everything screwed up during this process?
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Hello my friend do you find the solution to use it the SCH-R970C cricket s4 with gsm
Bumping this for a solution ^^
I have spent hours trying to figure this out for a Cricket SCH-R970C. I would like to use it on straight talk service.
I found this thread http://forum.xda-developers.com/showthread.php?t=2282683 but I do not have a working SIM card in order to try this.
Any help would be appreciated!
Hey guys-
I have a rooted T-mobile LG G2 running CM 11. The problem is, my family wants to switch to At&t, but my phone has some issues.
When I tried unlocking the SIM card with the code the T-mobile people gave us, it said the USSD code had an invalid MMI code/connection problems.
I tried it several times, but it didn't work.
Does this mean my SIM card is already unlocked? Or is there a problem with the fact that I'm running CM11?
If there is, do I need to flash back stock and then try to SIM unlock?
Thanks in advance for the help
Hello, I am rather new here. I am trying to sim unlock m Galaxy S5 (sprint) that I bought on craigslist. I have the unlock code from Sprint and a Tmobile sim card but when I insert the tmobile sim it doesn't ask for the unlock code, instead just displaying "invalid sim". This is an unmodified phone, not rooted or anything, a stock SM-G900P. Thank you for your help.
ColdFlare said:
Hello, I am rather new here. I am trying to sim unlock m Galaxy S5 (sprint) that I bought on craigslist. I have the unlock code from Sprint and a Tmobile sim card but when I insert the tmobile sim it doesn't ask for the unlock code, instead just displaying "invalid sim". This is an unmodified phone, not rooted or anything, a stock SM-G900P. Thank you for your help.
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Click to collapse
Common scam from Sprint customer service... they gave you the SPC code for that device. it does not SIM unlock your device. To unlock your device, install the Sprint Samsung Unlocker APK. This will allow your unit to work overseas only, not in the USA. SSU.apk link?
http://forum.xda-developers.com/spr...print-samsung-unlocker-unlock-sprint-t2928250
has anyone tried using a AT&T 935A on Verizon ? I have seen posts from users flashing V onto A but not the other way. Is the hardware identical?
AT&T gave me my unlock code but it does not register with the Verizon network so I was about to flash the V or U version.......
Any ideas before I start flashing this one?
I'm trying to do the same thing.. hope someone knows
I installed the RR (7.1.2) ROM and followed this guide ( https://forum.xda-developers.com/ga...p-nougat-holy-grail-hlte-rock-stable-t3630301 ) to the T, but I have a SM-900p... this guide is for the N9005 international. Everything works great other than the activation for my cellular. IMEI is still there and when I try to run the bootloader provided in the guide it fails. If anyone could point me in the right direction that'd be greatly appreciated! Hats off to svbarbosa for the detailed guide!
EDIT: I believe its a boatloader (modem?) issue, anybody who has another opinion please bring it forward. I just wanna be able to use my phone as a phone lol
EDIT 2: Just removed my SIM and my service is back! I can make/receive all calls and data WITHOUT SIM installed.. With it installed I lose it. Any clue as to why?
Is Sprint your carrier? Sprint uses CDMA, not sim cards. The sim slot there is to enable roaming outside the USA.
Yes, Sprint is my carrier and I've had this phone since it came out with the SIM card in it. Up until this morning that's how I've been receiving service.