Windows Phone 8 has been out in the wild for barely a few days and users are already complaining of battery issues and random reboots.
The issues are not restricted to a particular device or manufacturer as users of both HTC 8X and Nokia Lumia 920 have taken to various forums to complain, which indicates the problem is likely with the OS rather than the underlying hardware.
The Verge links to various forums where people are complaining about the said issues. Here's the user who started a thread on Windows Phone Central about random reboots on HTC 8X:
I bought here in Prague where I am coming from black 8X on the launch day (1st of November) and so far within 3 days of use I had 2 random reboots. Device just suddenly reboots itself ending in PIN screen. Quite annoying, but not sure whether go for service or is it a software issue. Can you share if you have same experience. So far both reboots happened when in car connected to bluetooth.
I've had my 8X for a couple of days, and it's been having multiple reboots. Lots of people over on WPCentral seem to be having the same problem
Pretty sure it's a software problem as have seen people complaining of the Lumia 920 doing the same thing.
Seems like Microsoft rushed WP8 a bit.