iPhone 6s Plus

Discussion in 'iPhone Tips, Help and Troubleshooting' started by Paul.Butt, Oct 16, 2015.

  1. Paul.Butt Suspended


    Jun 14, 2014
    Barry, South Wales
    My iPhone is set to 4G but where I live there is no 4G at the moment . If I'm out of wi-fi range and go to a 3G area will the phone if set to 4G look for a 4G network instead of switching to 3G. I ask because I'm wondering if I should set it to 3G instead to save power.
  2. eyoungren macrumors Core


    Aug 31, 2011
    ten-zero-eleven-zero-zero by zero-two
    Your phone will pick up whatever is the strongest signal. If there is no 4G signal it will "step down" to 3G and if no 3G it will keep stepping down until it either finds a signal it can use or will show 'No Service'.

    The issue of battery draw comes in to play when your phone is trying to hold on to a weak signal. That results in the phone hammering the tower it's connected to in order to stay connected, which in turn causes battery draw because the phone is active.

    If your area does have weak 4G signal though and it's not useable, then yeah, I'd turn it off.

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