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thanks El presidenteTurning it off isn't a problem, but turning it on again would be.
If you're looking to save battery/stop calls/notifications etc, you could use something like Tasker to switch on airplane mode at 23:30, then have it turn airplane mode off at the time you wanted.


good! thanksYep, just switch it to airplane mode overnight. It's still on but uses just 1 or 2% of the battery (as long as you've nothing else running in the background of course).
Dave
hi ThomYou could do it un-root-ed with Tasker if your system is not 4.2 or later. You could do it root-ed with Tasker using an add-in even for 4.2 and later.
... Thom
i don't know OppoSome phones have timed power on/off, like Oppo. Thing is though, it's not truly off, it's a low-power standby mode and it won't receive calls or connect, it just appears to be off. Rather like turning on/off a TV by the remote rather than on the set itself.
It doesn't hurt a device to power it off if you do not wish to have it on.I think you should take phone in Airplane mode or Do not Disturb in that time you want. Don't need to shutdown your phone, because it's not good for phone's access and hardware.