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I have recently purchased an iphone 3G with updated baseband which was previously used with AT&T. I have jailbroken the phone with custom 3.1 firmware but haven't unlocked it yet....
09-26-2009, 12:38 AM #1iPhone with any at&t sim card?
I have recently purchased an iphone 3G with updated baseband which was previously used with AT&T. I have jailbroken the phone with custom 3.1 firmware but haven't unlocked it yet.
I heard that 3G supports any sim card from at&t if it was previously registered with at&t. I tried using another at&t sim card but it did not work.
Please atleast let me know whether it was supposed to work or not with any at&t sim card or it's because of the updated baseband and FW?
09-26-2009, 12:51 AM #2
iPhone should work with most newer sim cards
09-26-2009, 12:56 AM #3
What do you mean by newer sim cards? Sorry but I didn't get the answer.
How do I know whether the sim that I tried is newer??
09-26-2009, 12:59 AM #4
Some of the older sims +3 years ago do not seem to work. Most of the time it will work with your sim
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09-26-2009, 10:57 AM #5
would it matter if you used activated or unactivated custom firmware?
09-28-2009, 06:14 PM #6
I have used the both and tried using 2-3 ATT sim cards but it doesnt detect any signal. Is their any unlocking for the sim also that we have to do??
I mean are the at&t sim cards locked for the device that we get it for??
09-28-2009, 07:52 PM #7
Simcards are not locked to specific devices. You should be able to stick your sim in any AT&T phone and have it work. I swap between my iPhone and a Sony phone when my iPhone gives me issues.
10-02-2009, 01:20 PM #8
I have the same problems with the sim card. Nothing at all. Before I jailbroke it, the sim was workig fine. I put it in my VU and it works fine. However the iphone cant connect. It shows a tiny bar and nothing else.
I'm using a iphone 3g with version 3.1 (7C144) carrier at&t 5.0
ANy help would be greatly appreciated. Back to my search. Hope I find something.