Chosen Solution

dies after a couple minutes

Hi Iv had a iPhone 6S do this to me and I know how you feel:-) If you have a computer beside you please can you do the following Download coconut battery and plug it in to see how many charge cycles it has If you could add a photo of what it shows it will be greatly appreciated It’s most likely a bad batter Considering the age of the device but it doesn’t hurt to be certain^_^ Hopefully this helps Thanks:-)