I recently bought a brand new Xperia Z5. Been using it for a week now.

Upgraded from my old Samsung S3, so the performance is sooo much better.

However, there is one problem. It will sometimes auto reboot for no apparent reason.

Happens 2 - 3 times a day. it happens usually whenever I open or exit an app.

I am aware that the Z5 will either reboot or force close apps if it gets too hot, but I am barely multitasking and my phone isn't hot when it reboots.

I heard that it might be a problem with the SIM card. I cut it from Nano to Micro.

Can somebody recommend a solution?

Thanks!

Thanks! I will try that. Will the reset affect my SD card?