1 Reply Latest reply: Apr 26, 2012 9:23 AM by varjak paw
TheJsNan Level 1 Level 1

My phone says 3G but it appears I have all the functionality of 4G.  What's going on?

iPhone 4, iOS 5.1
  • varjak paw Level 10 Level 10

    I'm not sure what you're asking. "4G" is not a technical term but rather a marketing one, and has been applied to a number of different cell technologies, not without controversy in some cases. The iPhone 4 supports the following cell technologies:


    • GSM model: UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz);
      GSM/EDGE (850, 900, 1800, 1900 MHz)
    • CDMA model: CDMA EV-DO Rev. A (800, 1900 MHz)


    Some carriers, particularly AT&T in the US, call HSDPA "4G", a label which many people disagree with but which was approved by the cell industry.


    If that doesn't answer your question, please explain in more detail your issue or what you hope to learn.