iPhone 7(+) My first iPhone 7 battery shutdown happened today

BootsWalking

macrumors 65816
Original poster
Feb 1, 2014
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Have owned my iPhone 7 for two years. Today the phone shut off unexpectedly, and when I went to turn it back on I got the battery depleted icon. Waited a minute and tried again and the phone came back up with a 52% charge. This is exactly what used to happen on the iPhone 6S I owned, a problem that is well known and presumed to be related to that design having a peak power demand greater than what an average worn battery can supply and thus the phone momentarily doesn’t have enough power to run.

Has anyone else seen this on their iPhone 7? Coconut battery reports 560 recharge cycles and my battery health is at 85%. I was planning to take advantage of the $29 battery replacement that Apple offers on the iPhone 7 through December of this year anyway but was curious if others have seen shutdowns on their 7/7+.
 

tonybarnaby

macrumors 68020
Dec 3, 2017
2,145
1,496
What does the battery health tab say? Isn’t there some info that explains that it did indeed shut down unexpectedly? I could have sworn it will alert you to this once it has happened at least once.
 

BootsWalking

macrumors 65816
Original poster
Feb 1, 2014
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I’m running iOS 10.3.3 so I don’t have the battery health tab or the associated alert. I got the battery health information from Coconut Battery.
 

akash.nu

macrumors G3
May 26, 2016
8,738
9,992
I’m running iOS 10.3.3 so I don’t have the battery health tab or the associated alert. I got the battery health information from Coconut Battery.
Update to iOS 12 and see what it says. iOS 12 is really good on older devices.
 

bruinsrme

macrumors 604
Oct 26, 2008
6,596
2,348
Let me guess you don’t have a back up either.

Update to 12, back up, see what the batter life tab says, call 1-800-my-apple and ask the specialist to run a remote diagnostic.

Keep in mind the battery program ends 12/13/18
 

BootsWalking

macrumors 65816
Original poster
Feb 1, 2014
1,304
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Update to iOS 12 and see what it says. iOS 12 is really good on older devices.
iOS 12 is very good compared to iOS 11 but from what I've tested it doesn't offer nearly as much improvement over 10.3.3 in terms of performance. That said, I'm still debating an upgrade for my phone. I do run 12 on my iPad 6th gen though.
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Let me guess you don’t have a back up either.

Update to 12, back up, see what the batter life tab says, call 1-800-my-apple and ask the specialist to run a remote diagnostic.

Keep in mind the battery program ends 12/13/18
I do monthly backups of my phone so not sure what lead you to that conclusion. I'm planning to swap the battery out anyway before the program ends and still debating whether to upgrade to 12. The only upside I see in contacting Apple and running the diag would be to get a free battery instead of the $29 offer but from what I've read a free battery is only available to 6/6s units.
 

akash.nu

macrumors G3
May 26, 2016
8,738
9,992
iOS 12 is very good compared to iOS 11 but from what I've tested it doesn't offer nearly as much improvement over 10.3.3 in terms of performance. That said, I'm still debating an upgrade for my phone. I do run 12 on my iPad 6th gen though.
Alternatively, if you have a Mac then you can use coconut battery to check your battery health and get it replaced by Apple while the discounted pricing is still available.
 

BootsWalking

macrumors 65816
Original poster
Feb 1, 2014
1,304
7,618
Alternatively, if you have a Mac then you can use coconut battery to check your battery health and get it replaced by Apple while the discounted pricing is still available.
Coconut is what I used. And Apple offers the discounted price irrespective of whether your battery passes or fails the diagnostic or above/below the 80% health threshold.
 

akash.nu

macrumors G3
May 26, 2016
8,738
9,992
Coconut is what I used. And Apple offers the discounted price irrespective of whether your battery passes or fails the diagnostic or 80% health threshold.
Yeah indeed. Probably just better to get it replaced regardless.
 

AppleHaterLover

macrumors 68020
Jun 15, 2018
2,036
2,040
Update to iOS12 and get it replaced.
I have asked this around but still don't have an answer:

Back in 2009-10 when iOS updates rendered mixed results, we used to save the SHSH blobs so we could downgrade as needed.

Is this still a thing? So people could stop whining about trying to solve issues that come from them using jurassic iOS versions that could be solved by upgrading.
 
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