: Zenith Wrote: Lithium batteries deteriorate. They all do. I've had to get a replacement battery because they end up getting worse and only lasting 2 hours on screen time instead of 4 or 5.
This happens for literally every phone. You should replace it because it is nearly dead anyway.
Here's the problem, if you update the battery on an older device with no battery issues, performance will still be bogged down due to the nerfing of the newest update to keep battery safe. Battery won't change a thing. If battery is an issue one generation before the X and 8, theres a problem. Apple releases phones every year. For them to have battery issues within a year or two is just flatout trash.