I got my iPhone 6 on launch day in 2014. This year I've noticed that the battery is abnormally touchy when it comes to temperature. A few times I would be at a friend's house in his garage and while I'm using my phone it would simply shut off as if the battery was dead. Since I just attributed it to the cold, I'd put it in my pocket for a few minutes to warm up, then it would turn back on and display that it had plenty of battery life left (sometime 30%-40%). Last night it wasn't particularly cold and when I got home I plugged it in and the battery jumped from 20% to 40% and it wasn't below 40F. I've calibrated the battery multiple times in the past few weeks (using it until it shuts off at 1% and then leaving it to charge overnight) and it seems to always be the same situation. I do charge it every night, but I don't remember my iPhone 4 or 5 every being so touchy when it comes to temperatures that are still within operating ranges. I'm guessing that with how thin the casing and battery are that they are more sensitive, but has anyone been noticing this more? No Apple Care so I'm pretty much carrying around a battery bank at least until the weather warms up more and/or the 7 is released this year.
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iPhone 6 Abnormal Battery Behavior
- Thread starter MaxMike
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Thanks for the input. I didn't even think that a cell could die like that. Maybe I'll see how much a replacement is either through third party or what a replacement is from Apple. I noticed that my speaker is a bit distorted too so that probably has to be replaced as well if I open it up. My battery normally still lasts all day, just when it gets below 50F or so it starts to get iffy.
I had a similar problem with my launch day 6 but I suspected it was a bad load of the beta I'm running. If you open a support call with apple to check the battery they will have you run a diagnostics test to determine if you have a bad cell. In my case I didn't so I had to do a restore from iTunes (so it rewrites the OS with a fresh copy). That fixed it for me.
This also happened to be today! My power unexpectedly was was in the 20% range and then when I plugged it back in it jumped up to 50%. This kept repeatedly happening while the phone was plugged in.
I am also having screen blackouts that render both my iPhone 6 Plus and my iPad air 2 to be completely unresponsive. The black screen and unresponsive devices begin to happen after I updated to the new iOS 9.2. There were no temperature extremes hot or cold.