iPhone 6(S)(+) New iPhone battery not lasting any longer

Discussion in 'iPhone' started by sappy1, Feb 11, 2018.

  1. sappy1 macrumors newbie

    Sep 14, 2010
    Two years ago, when I first got my iPhone 6s, the battery lasted 2 days. After two years, it lasted about one day.

    I got a new battery last week and hoped it would last like when I first got the iPhone. Unfortunately, it also only lasts a day.

    Plus, nothing seems particularly faster (not that I saw that much slowdown previously)

    Is anyone seeing better battery longevity with the replacement?

    Still on iOS 10.3.3 here.
  2. jeyf macrumors 65816

    Jan 20, 2009
  3. jav6454 macrumors P6


    Nov 14, 2007
    1 Geostationary Tower Plaza
    Do you still have the same apps from 2 years ago?
  4. sappy1 thread starter macrumors newbie

    Sep 14, 2010
    most of my battery is being used by safari, not apps.

    While my safari use may have gone up, shouldn't there be a dramatic difference between a two-year old battery and a new one?
  5. mtneer macrumors 68030


    Sep 15, 2012
    You've probably upgraded iOS, which Apple notoriously declines to optimize for older hardware. So while you maybe using the same apps as two years ago, those apps while running on newer iOS's; which maybe taxing your system more compared to when you were using micro-optimized software just released on the 2015 flagship.
  6. sappy1 thread starter macrumors newbie

    Sep 14, 2010
    Did not upgrade iOS to the lastest. Plus, I changed the battery just a week ago from a two year old battery to a new one.

    If my system were so taxed, the two year old battery would have drained dramatically quickly. It also lasted about a day.
  7. BugeyeSTI macrumors 68030


    Aug 19, 2017
    Did Apple replace the battery or is it a 3rd party replacement? If you have a MacBook or Mac you might want to use coconut battery to check the health of the new battery
  8. Racineur macrumors 6502


    Jun 11, 2013
    Montréal, Québec
    Hi, just had my 6s battery changed by Apple last week. I saw a small performance gain and battery life but nothing to go crazy. Still, it's a good feeling to know (and check with Coconut) your battery health is always 100%. On may hope a new battery will undo the damage done by iOS 11 but that's not the case. My 6s is a used one I found in 100% mint condition and the original battery was at 87% after the 2 years plan of the owner. So much throttling before the replacement. At least now, no throttling as shown by Geekbench. As for 10.3.3, always thought this was the best OS for 6 or 6s.
  9. yangfarmer macrumors newbie

    Nov 15, 2017
    It last 1 day when I got my 6+ 2 years ago. After 2 years, it can only last half day at the best. Now after I replaced with new battery from Apple, it can last 1 day. I am happy now.

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8 February 11, 2018