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Thread: No Service T-Mobile 3GS 4.1

  1. #1
    Default No Service T-Mobile 3GS 4.1
    I have read many many posts (but nothing recent) where we're seeing Searching then No Service with our Tmobile SIMS.

    Has anyone found a fix/solution/reason?

    My story is that a friend asked me to jailbreak and unlock this 3GS for her daughter.

    I used a youtube tutorial to load iOS 4.1 with ipad BB 6.15. JB with limerain; then I unlocked with Ultrasn0w 1.2.3. The phone is recognized and activated by iTunes (as I have an old ATT SIM) but never finds a signal when I install the TMo SIM.

    I have also tried the Airplane mode switching, resetting Network Settings.

    Any help is greatly appreciated. I'm trying to avoid having to reimburse her for the cost of this phone since I may have rendered it useless on any carrier (since I apparently cannot nor revert to stock because of the BB, or can I?)

    PLEASE!

  2. #2
    So I guess I will have to reimburse her for this phone? No one has any other ideas for me?

    Would inputting the APN settings help it receive signal?
    Last edited by jjbaio; 2011-09-29 at 05:15 PM.

  3. #3
    try going to settings then general then network and turn enable 3G off

  4. #4
    Quote Originally Posted by midgard18 View Post
    try going to settings then general then network and turn enable 3G off
    Thanks I have tried that, I actually truned off 3G before inserting my TMobile SIM.

  5. #5
    ok Well I didn't turn it off before inserting my tm sim was driving me nuts kept getting no service with tm sim in I changed it powered on and of and got service

  6. #6
    Livin the iPhone Life R.Mortera's Avatar
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    Maybe there's just not a lot of signal on where your at

  7. #7
    have you tried any other sim cards?

  8. #8
    hi guys,
    I have the same problem (invalid sim) with my T-mobile prepaid sim card and working fine with AT&T sim card. Any suggestions plz.
    I am using Iphone 3g - Jail broken - OS 4.2.1 & Firmware 05.15.04

    Cheers,
    Sunny
    Last edited by sunny1983; 2011-10-03 at 01:26 AM.

  9. #9
    Quote Originally Posted by xcuter View Post
    have you tried any other sim cards?
    I've tried an older non-3G Tmobile SIM and a SIM from a currently active AT&T iphone but still no signal message.

  10. #10
    Quote Originally Posted by jjbaio View Post
    I've tried an older non-3G Tmobile SIM and a SIM from a currently active AT&T iphone but still no signal message.
    As Firmware 05.15.04 has no unlock software released yet.... I upgraded my Iphone 3g to firmware 06.15.00 with OS 4.2.1 and then Jail broken and unlocked with Redsn0w and my T-Mobile Prepaid Sim card is working fine ..yahoooo....

    Below are the steps I followed...

    How to Update iPhone 3GS / 3G Baseband to 06.15.00 with Redsn0w 0.9.6b5 for iOS 4.2.1 Unlock
    How to Update & Jailbreak iPhone 3GS / 3G Baseband to 06.15.00 with Redsn0w 0.9.6b5 for iOS 4.2.1 Unlock | Redmond Pie

    Good Luck !!
    Sunny

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