Chosen Solution
I recently replaced an iPhone 6s Plus Battery for shutting off randomly but it keeps doing the same thing as the old battery. What can I do?
There are a lot of poor quality batteries out there so ideally you need to use a known-good battery (the 6S and 6 Plus batteries are compatible) to help you determine if the issue is the battery or something else. It could be the charge port or the charge circuit on the logic board.
If you use a Mac, download and run Coconut Battery to see what your’s is doing. Click on the iOS reading with the phone plugged into a USB port. https://www.coconut-flavour.com/coconutb…
