Help!HELP! Lumia 900 unlocked but still 'invalid sim'??? - GSM-Forum

umbleets · 01-17-2013, 21:36

I have a nokia lumia 900. Originally had an AT&T sim but I had it unlocked and was using it with my t mobile sim card. It was working fine with the exception of being able to send or receive picture messages. Then all of a sudden this morning my phone had no service and said 'invalid sim'. I tried restarting the phone, i've tried taking the sim card and putting it back in, I've tried resetting the phone, nothing is working. Any ideas?

BADULLA · 03-19-2013, 13:43

me also i got the problem, i have tried new sim card it's fine.. try this

samithashiva · 03-19-2013, 14:59

Quote:

Originally Posted by umbleets

I have a nokia lumia 900. Originally had an AT&T sim but I had it unlocked and was using it with my t mobile sim card. It was working fine with the exception of being able to send or receive picture messages. Then all of a sudden this morning my phone had no service and said 'invalid sim'. I tried restarting the phone, i've tried taking the sim card and putting it back in, I've tried resetting the phone, nothing is working. Any ideas?

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01-17-2013, 21:36	#1 (permalink)
umbleets Junior Member Join Date: Jan 2013 Posts: 2 Member: 1870054 Status: Offline Thanks Meter: 0	Help!HELP! Lumia 900 unlocked but still 'invalid sim'??? I have a nokia lumia 900. Originally had an AT&T sim but I had it unlocked and was using it with my t mobile sim card. It was working fine with the exception of being able to send or receive picture messages. Then all of a sudden this morning my phone had no service and said 'invalid sim'. I tried restarting the phone, i've tried taking the sim card and putting it back in, I've tried resetting the phone, nothing is working. Any ideas?

03-19-2013, 13:43	#2 (permalink)
BADULLA Junior Member Join Date: May 2009 Posts: 9 Member: 1039967 Status: Offline Sonork: mafiaboy Thanks Meter: 1	me also i got the problem, i have tried new sim card it's fine.. try this