Clock (time) frozes

[AC Question]

When I leave the phone on overnight and When I turn the screen back on in the morning I notice that the time has frozen multiple hours ago. The time will stay wrong for some time. It results in alarm not going on. It happened 1 time but seems a problem that can happen agean. So any fix for this?
(Samsung J7 (2016) )

 

[Tim1954]

If you set it to automatic it will be synched with the network clocks and hopefully be accurate. Țry going into the clock app and force stopping it too...