Stop Facebook and Instagram from running in background In developer settings I can stop both Facebook and Instagram but those pesky apps just bounce right back within seconds.  One reason I moved from Apple to Android was to be able to control my device and I find this frustrating.  Is my only option to delete these apps and just run them from a mobile web browser?

I don't want to be told that these apps need to be running all the time and I can just ignore it.  They can run when I start them until I close them.  This is for data, privacy and battery usage concerns whether real or perceived I want this control of my device.

Also I do not want to root my phone and keep the OS stock.  Running 7.1.1 on a Nexus 5x
Applications like Facebook messenger, always leave a few processes and services running in the background. Even using task killers is not very effective in preventing them from running, because soon they will continue running.

In a situation like this, hibernating is more efficient because it takes care of both the proceses and services running in background. It will also prevent that application from starting up again until you start it.

Having said that a good remedy is to use hibernation applications like Greenify and see if it resolves the issue. The good news is that it is available for non root users as well.

More detailed instructions for setting up are found here: How to Optimize Your Android Phone’s Battery Life with Greenify