1. MattMJB0188's Avatar
    Anyone know why data speeds are slower using a iPhone 4s sim with an adapter and iPhone 4s data plan? I am just wondering if anyone is using different APN settings? The iPhone 4s is an HSPA+ plan so there shouldn't be an issue right? Anyone have any advice?
    03-28-2012 08:34 AM
  2. anneoneamouse's Avatar
    Yes, check this thread over at XDA:

    [FIX] AT&T SGS2 Data Speed Issue's (Correct APN Settings) - xda-developers

    Several people in the same boat post in that thread.

    If this helps, consider pressing thanks, it makes me smile.

    MattMJB0188 and Edge1978 like this.
    03-28-2012 05:20 PM
  3. cajunaggie87's Avatar
    Also, you might need to get a different SIM card. I know whenever I got my HTC Inspire 4G, they gave me a different SIM card that allowed HSPA+ speeds. The one I had before didn't. If your speeds are still slow, I would to go an AT&T store and ask them if you need a new SIM.
    03-30-2012 02:18 PM
  4. MattMJB0188's Avatar
    I actually got a new MicroSim last week. Anyway, I'm thinking it might be due to the fact that I'm on an iPhone 4s plan.
    04-01-2012 11:12 AM
  5. MattMJB0188's Avatar
    I take that back, using a micro sim and iPhone 4s doesn't seem to be affecting my speeds as much as I thought.

    UPDATE: I have come to the conclusion that the Galaxy S II will work completely fine with download speeds using the iPhone 4s MicroSim and data plan, but it will not do so hot with upload speeds.
    04-01-2012 02:16 PM