Q: iPhone 5 battery draining very fast

I Won't go into why but last week I had the SIM card on my 6s plus changed and went from two day battery to less than 1/2 day. At first I didn think of the card so I tried every setting to see what might have changed or could be causing the change. After a few days I went back to the original card and immediately got my two days battery use back. I had no idea the SIM card could have any affect on the battery use.

Hello, maybe your battery has reach its limit and you may need to replace your battery. You can also check to see if there are applications that are draining your battery. You may read more instruction here: http://www.technobezz.com/iphone-battery-life-drain-dies-fast/

I hope this helps.