[aiharkness]

Look at software.... See if you can figure out what might be causing a problem?.... A good place to start would be any apps you installed right before having problems.

Ditto themes. And if you are running a third-party theme, switch back to a stock theme for a while and see if that solves the problem.

Check your free memory. Note the value immediately after a battery pull. Check it again later.

If you are using a microSD card, remove it for a while and see if the problem goes away.