lollipop sudden reboot, major bug?

[andy1]

My Z Ultra was all good untill few days ago it suddenly shut of and reboot itself, not once but one after another. Although its not frequent but I can never expect when will the phone reboots again. I've tried resetting and ran the device in safe mode and it even rebooted in safe mode, this problem still occurs after I did a pc companion repair. Please help me out here!

[andy1]

This reboot happened again while I was watching YouTube, seriouslo it's annoying as, does anyone know what's up

[Hampus]

Did this happen now, when you did not have your SIM/SD-card inserted?

[andy1]

Sorry for late reply keep getting error 403. I was using it last night in YouTube and it suddenly rebooted. I had the sim and sd card in all day and it's fine until that reboot.

[toothpaste · Accepted solution]

try it for a day or two WITHOUT sim card and WITHOUT sd card

yes, it is very annoying, but i suggest you try it.

[andy1]

Yeah I will do it in the weekends and see how it goes. Thanks for the help!

[andy1]

I got a video to show the problem, not sure if it will help. This is when my sim card is inserted, once I removed my sim card it did not reboot so I think it might by my sim. https://youtu.be/apiLb4H1ZS0