Upgrading iPhone From 3G to 4G on Contract [HELP]

Discussion in 'iPhone Tips, Help and Troubleshooting' started by iMacBoy, Jun 8, 2010.

  1. iMacBoy macrumors 6502

    Dec 24, 2009
    Hey guys,

    So i know the 4G isn't out yet but,

    I have the iPhone 3G 16GB and i am on a contract that will be ending soon.

    I skipped buying the 3GS because i thought that was allowed of bulls**t and wasn't worth buying.

    But now the 4G looks immense! and i was wondering if it is possible to just buy the 4G and put my contract SIM Card into the 4G and then just upgrade my contract?

  2. stevene macrumors newbie

    May 10, 2008
    Denver, Colorado
    Well, for one, the iPhone 4 uses microsim... your old sim card will not physically fit into the new phone.
  3. dccorona macrumors 68020


    Jun 12, 2008
    just a warning, there's people on here who will flame you for calling it a 4G, its an iPhone 4

    but to answer your question, your SIM will not be compatible. But don't worry, Apple has a pretty elegant system of transferring your number over. Just plug into iTunes, and a simple step by step process will walk you through moving your number over. It should be relatively painless

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