Iphone 4 4.0.2 unlocked no service please help

[bape47]

i have a iphone 4 version 4.0.2 unlocked i'm using T-mobile i just got it last week but this morning i woke up i saw the phone show no service and then i reset the phone and turn it on they still show me no service.please help me thanks a lot

 

[PsstGreek]

Make sure you have 3G off. The sim card is cut correctly. And that the baseband hasn't been upgraded. 1.59.00 is the only baseband that can be unlocked.

 

[bape47]

Yeah im used my t mobile one week already its work perfect but just this morning the phone no service