Certain chat apps are automatically closing

[llloyd4]

I've recently switched phones and carriers, my old phone was a Samsung j320a, the new a Samsung j3 prime. I've noticed my chat apps keep automatically closing overnight. The j320a never did that. I did nuke the over zealous power saver app to no effect. How do I get them to stay open?

 

[B. Diddy]

Welcome to Android Central! Go to the Battery menu and look for a Battery Optimization option -- see what happens if you turn off optimization for those apps.