Possible iPhone 4s battery fix?

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Level 1

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Possible iPhone 4s battery fix?

I wanted to contribute this to the community as a possible fix for people who own an iPhone 4s and have experienced rapid battery drain after one of the recent iOS updates. The fix seems to have worked for me.

I had searched everywhere on these boards but found no solutions - my 4s, which had always worked fine, was suddenly draining in 4 hours with little or no usage. Then I noticed that my MacBook pro one night had its fans on quite loudly while I was not really using it. I checked the running processes and found that Safari was using a lot of CPU time. Looking into it further and searching the web for others with this problem, I discovered that it was my Reading List in safari which was using a ton of CPU.

I had noticed before that I use Reading List in a somewhat unconventional way - I drag a lot of pages in there, using it as a sort of "bookmark list" for interesting pages. It took me a while to realize that the OS caches those pages for offline viewing and keeps them updated. It seems certain pages were choking this system for some reason, using a lot of CPU and memory.

After i noticed noticed this, I completely cleaned off my phone (again), reset all settings, then removed everything from my Reading List. Amazingly, this seems to have solved my battery problem. I can imagine this won't work for everyone, but I thought I would mention it in case others use Reading List in the same way.

iPhone 4S, iOS 8.1.3

Posted on Feb 15, 2015 11:04 AM

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Answer 1

Ingo2711

Level 10

80,301 points

Feb 15, 2015 11:03 PM in response to jpetreman

You can mark your own post as "Solved". That way other users will come more likely across your thread.

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Answer 2

Drew Reece

Level 6

10,684 points

Feb 15, 2015 11:32 PM in response to jpetreman

For anyone trying to resolve issues like this the iOS 8 'battery shaming' feature may indicate the app that may be contributing to drain.

http://m.imore.com/how-understand-battery-usage-ios

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Answer 3

jpetreman Author

Level 1

0 points

Feb 16, 2015 2:08 AM in response to jpetreman

Can't seem to mark my own post as the solution, but here it is again:

I wanted to contribute this to the community as a possible fix for people who own an iPhone 4s and have experienced rapid battery drain after one of the recent iOS updates. The fix seems to have worked for me.

I had searched everywhere on these boards but found no solutions - my 4s, which had always worked fine, was suddenly draining in 4 hours with little or no usage. Then I noticed that my MacBook pro one night had its fans on quite loudly while I was not really using it. I checked the running processes and found that Safari was using a lot of CPU time. Looking into it further and searching the web for others with this problem, I discovered that it was my Reading List in safari which was using a ton of CPU.

I had noticed before that I use Reading List in a somewhat unconventional way - I drag a lot of pages in there, using it as a sort of "bookmark list" for interesting pages. It took me a while to realize that the OS caches those pages for offline viewing and keeps them updated. It seems certain pages were choking this system for some reason, using a lot of CPU and memory.

After i noticed noticed this, I completely cleaned off my phone (again), reset all settings, then removed everything from my Reading List. Amazingly, this seems to have solved my battery problem. I can imagine this won't work for everyone, but I thought I would mention it in case others use Reading List in the same way.

Reply