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  1. jl1's Avatar
    I need help figuring out why i get this message. "Could not activate cellular data network". I am on AT&T with a data package. Just yesterday i traded a friend my Samsung Captivate for his iPhone 4. Both phones are brand new. I had to cut my sim card to fit in the new phone and i can make calls and text so i know i didnt screw up cutting it. I have removed and replaced the sim, Reset network settings multiple times, Hard reset but its still giving me the error. Im not sure how AT&T is gonna be seeing as how i left with a captivate and will be returning with a iPhone.(only reason i traded was AT&T couldnt get an iphone without a credit card). Any help would be great. iPhone 4. 4.0.1 unjailbroken with legit sim. Thanks!!
    Attached Thumbnails Help!! Could not activate cellular data network-photo.png  
    2010-09-17 12:57 PM
  2. z3r01's Avatar
    at&t data plan isnt the same as an iphone data plan....u have to change your data plan to the iphone data plan
    2010-09-17 01:43 PM
  3. -vis0-'s Avatar
    Is that accurate? Thought that was an APN thing? You had to edit. You dont need an "Iphone" data plan, you dont need any data plan to use an iphone.
    2010-10-10 10:42 PM
  4. jl1's Avatar
    I downloaded apn settings from cydia and it works perfect now. Thanks!
    2010-10-11 03:19 AM
  5. -vis0-'s Avatar
    yay! Think thats the first time I was actually able to help anyone on the forum. -score-
    2010-10-11 08:35 AM
  6. Waleed786's Avatar
    you dont need any data plan to use an iphone.
    I thought it was required to have a data plan with an iPhone? People say that they bought an iPhone without a data plan, and a few days later AT&T automatically added it
    2010-10-11 01:02 PM
  7. -vis0-'s Avatar
    Yeah, your supposed to have one, you have to sign with a data package, and call & cancel it I think? I've always used pre-paid Sims in my iPhones, Although at&t will tell you that you can't do that.
    2010-10-14 01:25 AM
  8. Waleed786's Avatar
    I've heard that ppl who already have an AT&T account who bought an iPhone off craigslist or something, and just switched SIMS, received a text after a few day saying that a data plan will be added because they have an iPhone.
    Also, I got it to work on prepaid also but if u use ur data a lot, u have a higher chance of them catching u and canceling it. If u don't use ur data on prepaid, then I guess ur good.
    There are many loopholes and tricks to avoid iPhone charges up front, but the thing is that they continuously monitor users so there's a chance that u will get caught eventually
    2010-10-14 01:48 AM