Brand new Samsung Galaxy A15 5G (2024) keeps rebooting itself overnight

[NJW1979]

I got this phone 4 days ago, brand new.  It doesn't reboot itself during the day, but when I get up in the morning and try to access my phone, I find it has rebooted, on its own.  My internal storage is far from full (47.9Gb used from 128Gb).  My 256Gb MicroSD card is nearly full of movies, but I fail to see that being the cause of the phone self-rebooting.

Any assistance would be greatly appreciated.

[Robin999 · Accepted solution]

Have you got auto restart activated? Settings>Device Care >Auto optimisation >auto restart. Tap on it to edit or turn off

[NJW1979]

That did it!  Thank you.  This was driving me nuts!

[Robin999]

No problem. Glad it helped.