Iphone 5 turning off at 40% battery power
Hi guys.
Today when I played music through spotify to my car audio system (through minijack), my iPhone 5 turned itself off in the same way it does when the battery is empty. At this point, the battery was at 40%. When I tried turning it on immediately after, the 'connect to power outlet' symbol showed up.
I also remember I used the snapchat app at that point.
Now a couple of hours later, I could turn it on normally and I have 40% power left.
At the moment I'm running iOS 6.1.3 and I've never experienced this before.
Has anyone else had this problem? Could it be related to the amount of power drawn through the headphone jack?
Thanks!
iPhone 5, iOS 6.1.3