Will the iPhone still drain more power on WiFi with 3G/LTE on?

Discussion in 'iPhone' started by scyap, Dec 29, 2012.

  1. scyap macrumors member

    Joined:
    Dec 22, 2010
    #1
    As we all know, 3G/LTE drains battery faster than WiFi

    Would it still drain battery faster if I'm already connected to a strong WiFi and left my Cellular Data on?
    In comparison to being connected to WiFi with Cellular Data off


    and I just found out recently that the telco can control if you get a 3G switch on the iPhone5?
    I was demonstrated on an iPhone 5, iOS 6.0.2
    First a sim card which only shows ONE switch (combination of 3G & Cellular data switch), and another sim card shows two separate switches
     
  2. darster Suspended

    Joined:
    Aug 25, 2011
    #2
    If you are on wifi, you will use wifi for data, not 3G or LTE. I leave both on all the time, and do not notice any significant battery drain.
     
  3. iHelios macrumors member

    Joined:
    Jun 28, 2012
    #3
    Wouldn't hurt for the OP to test this and post the results ;)
     
  4. Beeplance macrumors 65816

    Beeplance

    Joined:
    Jul 29, 2012
    Location:
    Singapore
    #4
    For this very reason, I'm always skeptical so I turn off cellular data whenever I'm in a wifi area. When I leave, I turn it back on.:)
     

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