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iPhone 12 battery draining fast

Hi all,


Trying to work out if I have a defective unit I need to send back or if there's a wider issue here. The iPhone 12 Pro is advertised as having a smaller battery than the iPhone 11 Pro so I expected to have slightly reduced battery life (which is fine as 11 Pro was excellent).


However I'm noticing that the iPhone 12 Pro is draining when idle with almost no background activity at a rate of 4% which is much faster than my previous iPhone 11 Pro, and to be honest a faster idle drain than I can actually remember from a new iPhone. First instinct was to disable Mobile data to see if it was a 5G thing, but I actually don't see any real difference from doing that (which makes sense as I've been on Wifi 98% of the time since I got it).


No matter what I try, it seems to be going down oddly quick. Not to an useable level or anything world ending, but I guess its sort of suspicious. I check the battery report, and it's not showing any real culprit, just a rapid decline for no clear reason.


If anyone can share their idle battery with either 12 or 12 Pro I'd really appreciate it.



[Re-Titled by Moderator]

iPhone 12 Pro, iOS 14

Posted on Oct 25, 2020 8:14 AM

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Question marked as Top-ranking reply

Posted on Oct 30, 2020 1:49 AM

Experiencing the exact same "issue" with my iPhone 12 pro (128GB).


I compared it with my girlfriend her iPhone XR (64 gb) last night. Her phone started of with 64% remaining where mine was at 94%. Both phone were left idle over a time of 8.5 hours. The next morning the iPhone 12 pro drained two 84% while the XR was at 63%.


Both phones had almost no background activity and are connected to wifi (5ghz).


The only difference between them is that the iPhone 12 pro has dual sim set up and the XR only uses one (physical) sim.

But that shouldn't drain your battery that much, should it?

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iPhone 12 battery draining fast

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