iPhone 6(S)/Plus New iPhone battery not lasting any longer

[sappy1]

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.

 

[jeyf]

Turn them over and they are all the same

 

[jav6454]

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.

Do you still have the same apps from 2 years ago?

 

[sappy1]

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?

 

[mtneer]

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.

 

[sappy1]

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.

 

[BugeyeSTI]

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

 

[Racineur]

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.

 

[yangfarmer]

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.