Device keeps restarting!!!

[Noodle88]

I've only had my phone since Nov 13 and it has recently started to play up. It intermittently freezes and the the whole phone restarts it's self. I contacted my network who gave me a link that would fix the problem but it wouldn't work! I am kind of reaching the end of my tether as it's not even a year old n the reason I switched from Samsung phones was the issues I was having with their handsets!

Has some one got any idea what is wrong with it and how to fix it?

[_alexdon_]

Remove the SIM,check if the same occurs.

[Kathymaggy]

And then what?

[_alexdon_]

See if it still restarts.

[Kathymaggy]

Sorry if I sound stupid but how can I use it without the sim?

[_alexdon_]

Airplane mode.

[Kathymaggy]

You should not be a moderator you are no help!

[_alexdon_]

Thank you,in this case just contact xperia care or take your phone into service:

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

[TJ65]

I have the same problem with Xperia SP-the phone freezes and reboots, the last few days. This was a replacement phone sent by Orange 4 weeks ago for the SAME problem. It was fine until 2 days ago. 

[aayonara]

alexadon suggestion makes sense. If SIM is damegd, that can cause phone's random reboots.