Non-iPhone Data Plan

Discussion in 'iPhone' started by rumorman69, Jul 6, 2010.

  1. rumorman69 macrumors regular

    Jun 25, 2010
    Hey there. I just wanted to know if it was possible to use a non-iPhone data plan with an iPhone 4. I know it was possible with a 3GS running iOS 3.x by changing the APN settings I believe. Can anyone confirm this still works on the iPhone 4? I mean I have have the sim card of a compatible phone that has a plan like "Data Unlimited" for $15/month : or "Messaging & Data Unlimited" for $30/month : or "Messaging 200 & Data Unlimited": could I just cut the sim and put it in my iPhone 4 (or change the sim online to my new iPhone 4 microsim) and just change the APN settings so I wont get the "Could not activate cellular data network: you are not subscribed to a cellular data service" error?

    Also, is this "Data Unlimited" package really unlimited or does it have a 5GB cap or something? Also can ATT or does ATT usually do anything about iPhones on a non-iPhone plan? I used to have a crappy samsung phone on a family plan with just voice ($9.99 for the extra line) and I simply put that sim on my iPhone 3GS and used it just fine for about 9 months or so... Thanks.

    Edit: Ps: If anyone wants to pm me the info or their story instead of posting it publicly, please feel free to do so.
  2. SpaceKitty macrumors 68040


    Nov 9, 2008
    Fort Collins Colorado
    They will send you an SMS saying that you are using an unapproved plan with the iPhone and then will likely change it back to the iPhone plan.
  3. rumorman69 thread starter macrumors regular

    Jun 25, 2010
    Because of the data plan or the voice plan without data? How do you know this? Did it happen to you? I used my old 3GS on a family plan with voice only for like 9 months without any problems...
  4. rumorman69 thread starter macrumors regular

    Jun 25, 2010
    Can anyone please shed more light on the subject? I'm very curious/interested. Thanks.
  5. rumorman69 thread starter macrumors regular

    Jun 25, 2010
    Bump? Please, I'm desperate to know if I can use a non-iPhone data plan... Thanks ;)
  6. DarthBeldar macrumors newbie

    Jul 7, 2010
    Factory Unlocked Iphone 4


    I bought a Factory unlocked iphone 4 from Canada to use with old ATT Sim. I have an old 2004 unlimited data plan 24.99/month. Had to cut sim down, phone works, but when I try to use 3G it says, "Could not activate cellular data network". I had a 3GS and used to get the data to work, but on the iphone 4, I have not had any success yet.


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