Solved! When I switch off the phone iPhone 6 the battery from hundred comes to 0%

[anand123ashwani]

My iPhone 6 is hundred percent charged but when I switch it off it comes to 0%

 

[hang-the-9]

My iPhone 6 is hundred percent charged but when I switch it off it comes to 0%

First though, you need a new battery. https/support.apple.com/iphone/repair/battery-power