Originally Posted by
woolyalan
But what if the phone only has flight mode such as mine (O2 XDA mini S) as it is a PDA also, turning the thing off as in a hard reset will wipe all data.
Nope - it's a rebadged Qtek 9100 - hold the power button down, and it'll ask you if you want to shut down and that you "might" loose some data. If you haven't saved something in Word/Excel, you would loose that, but you won't loose any saved data.
You should be shutting down apps once you've used them anyway to conserve memory - it gets a little slow if you have loads of stuff open.
Just power it off - it'll start up quite happily with all your contacts/phone history etc intact.