Why does full strength LTE switch to 4G when on a call?

Discussion in 'iPhone' started by jaustindds, Sep 21, 2013.

  1. jaustindds macrumors newbie

    Jul 10, 2008
    Has anyone else noticed that you can have a 5 dot LTE signal and as soon as you answer or make a call, the network immediately jumps to 4G? It happens on my phone all the time. I mainly am on calls on my car's bluetooth or on speaker so I will frequently use data while on a call. I would say that this happens 100% of the time on my 5S and happened probably 80-90% of the time on my 5. Any explanation for this?
  2. navindralr macrumors member

    Jun 29, 2010
    If I remember correctly it's only for data transmission at the moment. Not voice calls...
  3. faams macrumors member

    Aug 10, 2010
    This is because there is no support for Voice over LTE as of yet
  4. viperGTS macrumors 68000

    Nov 15, 2010
    LTE, regardless of carrier, does not support voice. Only data.
  5. eyoungren macrumors Core


    Aug 31, 2011
    ten-zero-eleven-zero-zero by zero-two
    Mine jumps to 1xRT the moment I get or make a call. But I'm on Sprint.

    As has been noted, LTE is only for data. Voice is handled differently.

    You should note too that those signal bars on your phone don't indicate data signal strength. Only voice. That's how in some areas you can have full bars and crappy data.

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