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I'm pretty sure my Samsung Galaxy A20 reboots daily, at around the same time, showing the usual signs of a reboot: sounds some kind of notification it's rebooted, takes a few seconds to find the SIM and reload the weather widget, asks for the password instead of a fingerprint to log in ("after a reboot").

However, Settings/About Phone/Status/Uptime says it's been up for weeks.

What's going on with it? Is it just reloading part of the OS? Is this normal? Why is it rebooting daily?

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    Uptime (as exported in /proc/uptime and as in source code) changes only if kernel restarts. The signs of a reboot you've described may occur even if only Java stack is restarted i.e. Android framework has performed a soft reboot.
    – Irfan Latif
    Apr 24, 2021 at 20:01
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    @IrfanLatif I think the big questions are why would it be doing this, and is this normal? What do you think?
    – End Anti-Semitic Hate
    Apr 25, 2021 at 0:13
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    @RockPaperLz-MaskitorCasket why is it restarting? No it's not normal. Might be a bug. And bugs have many possible reasons, in fact countless. logcat (or pstore in case of kernel panic) usually helps to trace the root cause. But apparently this isn't the main question OP asked about.
    – Irfan Latif
    Apr 25, 2021 at 0:38
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    @IrfanLatif Thanks. I've never heard of it for a Samsung phone, but I wanted to make sure it wasn't some sort of weird Samsung thing. Over the years, I've had various devices that intentionally auto-restart at a certain point, but IIRC, never an Android phone. I think some of the Android-based TV boxes may auto-reboot once in a while though.
    – End Anti-Semitic Hate
    Apr 25, 2021 at 6:01
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    do another reboot yourself and check uptime
    – alecxs
    Apr 25, 2021 at 21:24

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