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tmobile sim will not work with sgs 4g

hello, i unlocked my phone using one of the unlock methods here now that i want to use it with tmobile it cannot connect to the tmobile network, i had been using it with att any suggestions? I call tmobile customer support but they dont know ****.

Need more info. What unlock method. Have you tried the sim with another phone? etc etc. Please be very thorough or no one will want to help.

i used this guys method :http://forum.xda-developers.com/showthread.php?t=980157
by sanfranx415

cal4877 said:
i used this guys method :http://forum.xda-developers.com/showthread.php?t=980157
by sanfranx415
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I've seen more than a few people post that that screwed their phones over and that the recommended way was to call tmo so that they unlock it

ok...... so what can i do now im only able to use it with att at this moment.

[Q] How to get Cricket HTC One SV working on Gsm

hello Folks
Need some help here. Picked up the cricket HTC One SV as was told its possible to use them on GSM
I have reading through the forums and have managed to s-off the phone using moonshine method and installed custom stock ROM
The phone doesn't ask fro any unlock codes but keeps saying PUK locked
Is there a way to do this? If there is a thread with such info please do guide me
Thanks

No one

Same issue
garynsa said:
No one
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I was wondering if you had any luck getting this on a gsm network..I know cricket is CDMA but I have read a few different websites listing the specs for this phone and some say it is GSM capable while others say it is not. Currently I am messing with it to see if I can get it on AT&T. Is this even possible. Thanks in advance.

Thedc24 said:
I was wondering if you had any luck getting this on a gsm network..I know cricket is CDMA but I have read a few different websites listing the specs for this phone and some say it is GSM capable while others say it is not. Currently I am messing with it to see if I can get it on AT&T. Is this even possible. Thanks in advance.
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No I couldn't get this to work

C-Spire Photon Q on GSM network?

Hi, did anyone tried to modify C-spire Photon Q to work on GSM network?
Is there some ROM or mode to make GSM network work?
FYI phone has already SIM mod from CorholioGSM
Thank you, BR 

If you already have the SIM mod, you should only need to do the NV edit - requires software like radiocomm. Search around, it's been mentioned a few times - although there isn't a wealth of information about it, there is some.

thank you, could this work?
http://forum.xda-developers.com/showthread.php?t=2166542

thorr001 said:
thank you, could this work?
http://forum.xda-developers.com/showthread.php?t=2166542
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Ya, that's the thread people seem to link to. I've never done it, I use Sprint.
Good luck.

How to Update to H90021x w/o AT&T sim

I'm using AT&T mvnos, need help.

I have Cricket, and I don't think we get H900 updates. It's a bummer. Maybe visit AT&T store? Perhaps they can throw in a sim for you.

Carlito17_2000 said:
I have Cricket, and I don't think we get H900 updates. It's a bummer. Maybe visit AT&T store? Perhaps they can throw in a sim for you.
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Use Bob Miller's thread. MAKE A BACKUP FIRST. You will lose all data as well as root if you have it. But it will NOT interfere with an unlocked device

Can H820 use a ROM made for H830?

I received an unlocked AT&T based H820 from LG as a replacement for my H830 phone that I used on T-Mobile. Can I flash a ROM that is made for H830 (T-Mobile) in this forum on my H820 phone? I am currently using my T-mobile sim card in this phone and have disabled all the AT&T bloatware, but would like a cleaner rooted t-mobile rom.
Any suggestions?

Do you get consistent LTE connection? I read once that it kept switching back and forth from LTE to 3G...
Thanks.

daring_guy said:
I received an unlocked AT&T based H820 from LG as a replacement for my H830 phone that I used on T-Mobile. Can I flash a ROM that is made for H830 (T-Mobile) in this forum on my H820 phone? I am currently using my T-mobile sim card in this phone and have disabled all the AT&T bloatware, but would like a cleaner rooted t-mobile rom.
Any suggestions?
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Nope, unless the rom specifically says that it can be used by both variants.
Sent from my LG-H901 using Tapatalk

OxyX said:
Do you get consistent LTE connection? I read once that it kept switching back and forth from LTE to 3G...
Thanks.
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I did not get consistent LTE. There was a lot of AT&T crap that I could not disable or uninstall either. To add to the misery, AT&T's bootlocker could not be unlocked and there are no ROMs for it in the ATT forum for this phone.
I gave up and called LG and asked them to send me a T-Mobile version and used excuses like dropped calls, loss of signal, etc. :laugh: They got me to talk to their manager who agreed and they sent out a TMo one that I am currently using happily without any issues!

daring_guy said:
I did not get consistent LTE. There was a lot of AT&T crap that I could not disable or uninstall either. To add to the misery, AT&T's bootlocker could not be unlocked and there are no ROMs for it in the ATT forum for this phone.
I gave up and called LG and asked them to send me a T-Mobile version and used excuses like dropped calls, loss of signal, etc. :laugh: They got me to talk to their manager who agreed and they sent out a TMo one that I am currently using happily without any issues!
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So, you flashed a H830 rom into a H820? could you please upload the file? I bricked my AT&T H820 and I can't find any file to flash.... I'll buy you a beer

Sorry. I called LG and they swapped my ATT phone with a Tmo variant since I was not successful in flashing a ROM on the phone