HTC One X keeps rebooting itself

[Anonymous]

I've had a One X for around 6 months now, and I've started to notice it rebooting itself at random. It never seems to do it if I'm actually using the phone, only if it's sitting idle. Sometimes it does it twice in a row, without me actually using the phone in between. It's not updating itself, and I'm not running one particular application every time it reboots, so I can't work out what's causing it.

Has anyone come across this before?

Thanks!

[MI5]

Possibly an app that is conflicting with the system. Have you downloaded or updated anything recently or around the time it started happening? Also, battery saver apps are known to give problems on some phones.