Xperia ultra reboots when incoming call comes in

[stroke28]

When the phone is on standby and I receive a call the phone will completely reboot, thus missing the call completely. I've got the latest updates installed and this puzzles me and is very annoying since the phone is brand new.please help.

[Uliwooly]

Get a brand new SIM card and check again also you can boot on safe mode and see if the problem occur 

[Phy]

How to boot on safe mode

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

[stroke28]

Thanks for the responses and I will try both a new sim and the safe mode boot and hopefully I can figure this out. I really hope my phone isn't a dud because apart from the weird restarts or complete inability to wake from sleep (common problem for me) the phone sounds great and visually is fantastic.

[Uliwooly]

Keep us updated 

[stroke28]

Unfortunately the sim change results in the same issue.even when I put the phone on standby mode I still get the issue of the phone not waking up from standby, it will actually reboot just to restart. I've even downloaded standby apps but still the same issues repeat. Pulling my hair out...

[Phy]

Try repairing it with Sony PC Companion.

http://support.sonymobile.com/us/tools/pc-companion/

[stroke28]

Downloaded the program and if all else fails I will try a repair, although I must admit that I have spent the last few days getting the phone synced and setup with all my normal apps and would hate to lose it all and restart from square one...

[Uliwooly]

If PCC doesn't solve the issue then it could be a hardware issue, you will have to contact your local Xperia Care

[Phy]

Sony Xperia Support

http://www.sonymobile.com/global-en/support/contact-us/