you want to crop. Press the tick and you're done. You've just selected a new wallpaper for your lock screen. Well done you.
20. Setting a password

If you are able to connect up your phone to your email, Facebook and other gems, we would highly recommend setting a password to protect it all. Like the iPhone you can set a four digit password to lock anyone out. Setting the password means that you lose the "never" option in the screen time-out options, however it does mean that if you forget to lock your phone, it will do it for you.

21. Setting the screen time-out

Want your phone to lock automatically so you don't phone people from your pocket? Of course you do. Jump into Settings, Lock & Wallpaper, and choose how long you want your Windows Phone 7 handset to go before locking down. You can choose 30 seconds, 1 minute, 3 minutes, 5 minutes, or never.
22.Turning location off to save battery

Location services are great, but they will eat your battery. If you aren't fussed about geotagging your photos or finding out where you are on Bing maps, nip into the Location option in Settings and slide that toggle to the left. No more Big Brother for you.
23. Turning off Geotagging

If you just want to turn off geotagging you can do that too. Go to Settings, Applications, Pictures & Camera, and then toggle the "include location (GPS) information in pictures you take", to the Off position.
24. Turning off data roaming

Surfing the Internet is an expensive pass time when you are in another country, as is checking Twitter or Facebook. Luckily you can turn