Up until yesterday, I had no issues with shutdowns or battery life, my battery generally lasting 18-20 hours each day. Yesterday I updated to 11.2.6 and now I am experiencing problems. Now, six times my iPhone 6 has shut down after only a couple or three hours. First time I thought it weird I received no low battery warning and scratched my head. Then I realized it was happening multiple times after lasting only a couple hours. Then I suspected that the battery indicator was always saying I had a full battery. I watched the indicator and one time it showed 100% continuously and 10-15 min. after the last time I looked at it it shut down. I never received a low battery warning. I watched it closer (after a partial charge to 58%) and it said 58% for 2:55 hours then shut down 30-45 seconds after the last time I looked at it. I verified the %charge with Lirum. I never received a low battery warning. When plugging it back in to charge, by the time it powers back up it shows 12% to 14%. One time it took 17 min. to charge to 58% from my car usb port and another it took 34 min. to charge to 100% from my computers usb port; so it seems to be charging fine. With Lirum I find: iPhone 7,2 hardware model N61AP 64 GB modem firmware 6.30.4 iOS 11.2.6 build 15D100 design capacity 1810mAh 24,876 Joules full voltage 3.82 v when charged battery actual max 1200 mAh (was 1700 until yesterday) actual voltage 4.336 v battery 66.38% (was always over 80%, over 90% when full charge, until yesterday) Also, I am on T-Mobile 31.1. It sure seems to me that this rev of the OS has broken something(s): - it has broken the battery charge % status indicator, - it has either caused the battery to wear down drastically and suddenly or it is now reporting different (now more correct or more wrong is unknown) statistics, - and/or it has caused the phone to drain power much more quickly, - and it has caused the phone to have shutdown problems. Anyone else experiencing any of this? Comments appreciated. Possible things to try appreciated.