keeps restarting

[Beats7474]

My Xperia 5iii was working perfectly this morning I left it for about 5 minutes, came to check something and it just keeps restarting, I have forced it to shut down left it for about an hour but nothing, the phone is less than 3 months old!

[Strampke]

First thing to try is remove SIM card and SD card.

Faulty SD cards tend to cause unexpected behaviour.

Sony published a troubleshooting video as well.

[Lord_viridis]

Also, to add.

Hold volume up and power button until you feel 3 vibrations to clear the cache out.

This can also kick out some software issues.

[SkyNet404]

Hey there,

You might also want to test the phone is safe mode, to check if it's behaving like this due to a recently downloaded app: https://bit.ly/3ONDVm3.

Hope it helps.

[Gilgameshuk]

As a last resort you can do the 2 min restart

hold down power and volume up at the same time for 2 mins....... ignore any vibrations and hold for 2 mins.

phone will then power off. 

Press power button on and away you go.