How to turn on/off Autostart for my apps?

You can go to Settings>More settings>Permission management(Applications)>Autostart to turn on/off the app switch.

For Funtouch OS 2.6 and lower version: Go to i Manager>App manager>Autostart manager to turn on/off the app switch.

Warmly Tips: The Autostart of some built-in apps is turned on by default.