Lost 3G connectivity after upgrade to iOS4

Discussion in 'iPhone' started by Lukeksk, Jul 3, 2010.

  1. Lukeksk macrumors member

    Feb 16, 2008
    I upgraded my jailbroken iPhone3G from iOS 3.1.3 to iOS4 using RedSnow. As I could not get any phone connectivity after that, I decided to restore to default iOS4 and be un-jailbroken. That worked and I could call and receive calls using iOS4. However, I noticed that when I'm not connected to any wifi network, the 3G data connectivity is not working. I just cannot get access to the Internet when I'm away from wifi connectivity.

    Despite turning Network > Cellular Data to ON (as well as OFF) and Network > Data Roaming to ON (as well as OFF), nothing worked.

    My iOS is 4.0 (8A293) and my modem firmware is 05.13.04.

    Any advice on how to fix my problem? Thanks.
  2. Makaveliarts macrumors 6502

    Jun 30, 2010
    I have the same problem with my 3Gs using IOS4

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