Chosen Solution

This happens occasionally but has been happening pretty often the past couple of days. I don’t really know how to explain it but I have a video of it happening: https://youtu.be/v2KzxS-91tM Any way I can fix it?

The first thing to try would be a new battery. You can find the replacement guide here. However, if your phone suffered any physical or liquid damage recently or was repaired in the last few weeks, then the problem may be something else.