1. iMore Question's Avatar
    My fully charged iPhone 6 drains quickly and then arbitrarily shuts itself down saying it is low on charge when there is 30 - 40 - even 60+% power remaining. When I plug it in it returns to the previous power level.
    12-27-2016 09:50 AM
  2. mark-d's Avatar
    Check your iOS is up to date

    If that fails set up your phone again from a fresh start rather than using a backup

    Alternatively you could contact Apple support and ask them to run diagnostics. If it is a faulty battery they'll replace it for you at a cost if you're out of warranty.

    Be aware that one of the iOS beta updates did something similar to my phone although it was 32% was the number for me! It's ok now there's been another updated beta issued so it may be your iOS version
    12-27-2016 10:29 AM
  3. Larry Cook1's Avatar
    When my six did that it was a bad battery.
    12-27-2016 08:33 PM
  4. SprSynJn's Avatar
    Had my iPhone 5 replaced because it would shut down at 20%.
    12-28-2016 01:31 AM
  5. mark-d's Avatar
    My iPhone 5s has a faulty battery but it still didn't shut down till 0%. It drained very rapidly and taken off charge at 6am wouldn't even make it till lunchtime with a normal usage.

    My 6s did the early shut down at 32% a few times but thankfully that's gone now that the latest iOS update has dropped.

    I understand it can be frustrating though. When mine 5s was going through battery diagnosis trying many different things I bought myself a second hand mophie juice pack which was an absolute life line
    12-28-2016 04:42 AM

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