I know that certain people have suffered from their mobile data toggles immediately switching back to off once they set them to on, but I have no mobile data toggles at all for most non-stock apps. Only Whatsapp gives me a toggle, the rest have nothing. Surprisingly mobile data does seem to be switched on for every app, but I have no toggle to control this. The phone is set up as new and there is no backup involved here. A reset of all settings, and network settings, doesn't fix it. Any ideas?