After installed ios 11.1 beta 1, battery drains 4% per hour, even if the iphone is not touched. My iphone is an iPhone 7 Plus.
I had already optimized the brightness, background process and as well location services.
For the moment I have activated battery low power.
I hope that we see very soon a 2nd beta!!!
Followed every method. Disabling assistive touch has now fixed the fast drain. Can say it's better than ios 11.0.1 drain Really thinking how assistive touch can drain the battery Thanks again for the guys Matching Arjuna,maryweather and GM64 I was afraid this will kill my hardware as it was heating up abruptly Submitted bug report 3740221
Same problem here! My phone was incredible hot and shutting down during the night, tried to downgrade, tried to restore settings, I tried everything until the battery was useless. In an apple support center they replaced my battery for a brand new one! and guess what, the problem remains.
Turn off assistive touch if you have it on and will solve your problem.
Same here, I just start turning off my assistive touch and still waiting for the development of my battery. Hope it will works.
Hi! I did just as you said. I turned off assistive touch and observing. I trust all will be well. Am curious tho how did you discover that the culprit is the assistive touch? Ms. MacApplerev
Have this problem on iPhone8 running 11.1 public beta.
Just turned off assistive touch, we'll see tomorrow morning how much the battery drain from 78%.
just switch off the assistive touch and it solved the problem of battery drain plus combined it with low power mode - it makes the battery life better
this works fine for my iphone 7, just combined it with low power mode setting - makes it even better.
I believe I have solved this problem. The issue appears to be a result of the phone not going into standby when the screen is off. My Usage and Standby times were always the same. Based on the recommendation in a post above, I turned off my phone, plugged it in, and left it in than state overnight. Since restarting Sunday morning the Usage and Standby times have been different and correct, and the battery life has returned to normal. It appears that a lengthy shut down is required to reset something. My guess is that shutting the phone off for 15 minutes or, even without charging, would have given me the same result.
I had no problems on iOS 11.1 beta 1, and upgraded to beta 2 yesterday. This morning my iPhone 7 Plus went from 100% to 2% (and shut itself off) at 12:15. I followed dweaton65’s plan of turning the phone off and charging. While it was charging, I read the “Assistive Touch” solutions above. When I turned the phone on again, I found that Assistive Touch was not ON. So hopefully dweaton65’s plan will work. Will let you know.
FYI - It seems to be doing better now. Thanks dweaton65.
I just posted this litany
https://forums.developer.apple.com/message/295191#295191
There is definitely an issue in 11.3 with battery management. It appears to be exacerbated by non-Apple batteries.
The Assistive Touch solution does not address the issue 11.3 appears to have with battery management.
Assistive Touch runs the touch interface film integrated into the display at a higher power consumption level to make it more sensitive to touch. No doubt that consumes significant battery energy; it is operating 100% of the time in high sensitivity mode, not just when you touch the display.
I've never had Assistive Touch enabled. The poor battery management issue being discussed here isn't about a higher rate of linear discharge; it's about only being allowed to use part of the battery's stored energy because 11.3 battery health management has inherent flaws.
Assistive Touch is a higher level of sensitivity of the touch screen to your finger. This is accomplished by running more electrical current through the touch film integrated into the display and the ICs that do the location analysis of the touch function.
That higher energy consumption happens 100% of the time in Assisitive Touch mode - not just when you're touching the screen. So it should draw down battery energy much faster than when it's disabled.
