[jeroenhd]

I've generally found them on most Android phones, but they're all over the place in the settings. On my current phone they're not in permissions, or connections, or internet setup, or security, but they're in the app details screen.

I've also seen the toggles placed in the data usage graph, the other, older data usage graph you can sometimes find via a workaround, and in a separate app that pretends to be one of those system storage optimizers.

I'm sure Android supports it at the system level but how you get to those settings is anyone's guess, really.