My OnePlus 5T is 3.5 years old and, after daily abuse, its battery life is starting to fade. But how bad is it?
OnePlus have a diagnostic tool which, annoyingly, isn't available in the Google Play store. And is a bit of a pain to run. So here's a quick tutorial.
Download the app
APK Mirror have a copy of OnePlus Diagnostic 2.1. There may be a later version by the time you read this.
Download and install it. But how do you run it? I couldn't find it in my app list.
Install App Manager
From the F-Droid repository, install App Manager. This will show you all the apps on your phone and all the activities which can be launched.
Open the "Diagnose" app:
Under "Activities" click the "View Battery Status":
That will give you your battery state:
Mine is at 54%, so looks like I need a new battery!