Spontaneous shut down

[jginther]

I have a 9630 and suddenly it shuts down and reboots itself several times daily either while idle or while I am using it. Very annoying as it takes several minutes (5?) to finish rebooting. Also, it came with a 2 Gb card and I want toi replace it with a larger card...do I just use the manager to back up everything and trust the Wizard that it will reload with a new card??

[Thiego-uk]

What OS your using? It could be that your with a buggy OS.
The memory card, to replace, I normally remove the battery, insert the new one and place battery back.

[jsconyers]

The backup wizard will not touch the SD card. Copy the contents of the old card to your PC and then move them from your PC to the new card.

As for the rebooting, what apps/themes did you install just prior to this happening? Have you dropped the phone? Got it wet? Had it in the bathroom while you were showering? Try removing the media card and see if it still reboots.