IPhone shuts down - battery issues or IOS bug ?
Apple iPhone 6s - 64 GB version - approx 1 year old.
IOS version 10.1.1
This has happened to me twice. First time was one morning I tried to open Snapchat. This was inside and temperature was approx 15 degress Celcius (early morning in bedroom). Second time was outside when I opened up the Camera app to take a picture. Temperature was approx 5 degrees Celcius.
I did not experience this when iPhone was running 10.1 or earlier. I upgraded to 10.1.1 the day after it was available.
After opening Snapchat/Camera app the screen just went blank. I could see that the LEDs were still on because it was possible to see the backlight. But after a couple of seconds the screen went totally black and the unit turned off.
Both times I used the power button to turn it back on. The first time I got the "red low power - insert charger" icons and the unit refused to do anything until I connected it to the USB charger. The second time I was able to start the phone but after I had entered the PIN code for my SIM, it shut down and then I got the "red low power - insert changer" icons when I tried to start it once more.
Both times this happened the battery indicator showed approx 50% (45-55 something) when it shut down. And when I connected the phone to the charger it showed the same. There are no applications running in the background using much power. Under daily usage I have no problems using the iPhone until the battery indicator goes down to 10-15% (I never let it run empty).
So could this be a battery issue showing that my battery might start to get faulty or is it a bug in IOS 10.1.1 ? Or might it be something else. Any input ?
iPhone 6s, iOS 10.1.1