iPhone 6 Plus Battery problems

I am having the same problem as you all with the added issue of it draining from 100% to 1% in 10 minutes if it is below 60 degrees. If I keep it warm with one of the disposable hand warmers it lasts a while longer but not like it should.

Sounds like you have some corrupt data or a locked process on the phone. If it starts back after the reset, then the next step in user troubleshooting is a restore from backup. Make a backup of your device and then restore to that backup. Restore your device from an iCloud or iTunes backup - Apple Support If the behavior continues, it is probably something corrupt in the backup. Restore the device as new, not from a backup. Use iTunes to restore your iPhone, iPad, or iPod to factory settings - Apple Support After the restore is complete, and before adding any additional content back to the phone, test for a short period of time to see if the behavior continues. If not, then you can try to restore the backup. If the behavior returns, then it is a problem in your backup. Make sure all of your data is synced to a supported program and then restore the device as new again, and sync your content back individually, not from the backup.

I am having problems with my iPhone 6 Plus battery. Battery life has diminished but, more importantly, it will suddenly show a low battery (6% or whatever) when I know it should have 30 or 40%. When I plugged it in to charge, the battery indicator immediately indicated 31%.

I'm having the same issue and it only started after the most recent iOS patch

I have the same problem and it also switches off around 10-15%

I'm having the same issue as well.

I am also experiencing this issue of the phone suddenly shutting off when the phone lists it has 20%-35% LEFT? Anyone have clues?