After the upgrade to 10.1.1 iOS, there are users found that their iPhone will be 30% of the remaining power when the automatic shutdown. According to the description of the affected users, they found that when the iPhone shows the remaining power of 30%, in fact, is about to have no electricity. Because a few seconds later, the remaining power will jump from 30% to 1%, and then automatically shut down. In the charging process, the power of the display will jump from 1% to 30%.

In fact, even the best mobile phone system including iOS, there will be a different degree of system failure, take iPhone 6 and iPhone 6 Plus as an example, how to fix iOS system to normal for iPhone 6/6 Plus? Please don't worry, what you need is just the iOS System Recovery tool.

iOS System Recovery is the all-in-one data & system recovery tool, which not only can restore lost and deleted data from any iOS devices, but also can repair all kinds of iOS issues including stucking on recovery, stuck in apple scree/blank screen and so on.

Read the video guide here:

https://www.youtube.com/watch?v=A4GLfclXqEQ

Read more:
Fix iPhone 6 that won't turn on
Recover iPhone 6 from frozen apple screen