To change the backlight screen timeout, go to Menu - Settings - Display - Screen Time Out.
Then chose the screen time out duration.
Warning: This will remove ALL data on the phone. There are two ways to do this:
1) On the Main Home screen, press Menu - Settings - Privacy - Factory data reset - Reset phone. It may ask for a password. Then press Erase everything
2) If you phone has completely frozen and you want to hard reset it, turn the Power off or pull the battery out and put it back in. Then hold down the Volume Down key. Then press and hold the Power key. The phone will turn itself on. When you are presented with a menu, choose Clear Storage by pressing the Volume Down key. Press and release the Power button. To confirm, press Volume Up for Yes or Volume Down for No
If you receive a call you cannot take (eg if you're in a meeting) you can send a text reply rather than just reject the call. When you receive the call, scroll up from the bottom and select a reject message
Type a word that is not in the dictionary. The word will show up in the suggestion box to the left. Long press on the word and it will save to the dictionary.
To install ringtones on your phone you will need to copy some MP3s on to your phone.
To do this, connect your Phone to a computer with the USB cable. It should mount automatically and appear as a drive letter on your computer. If it doesn't, then drag the notification bar (the bar at the top) down and press USB Connected and select Mount.
Once that is done, go to the Phone's drive letter on your computer. Create a folder called "ringtones". Then copy your MP3's from into this folder.
Once that is done, go to the Phone's home screen, press Menu - Settings - Sound - Phone ringtone. Scroll down until you find the ringtone you want
To find out information about Signal Strength, Network Information, Remaining Battery Time and Battery Usage (by Application), go to your Homescreen - Menu - Settings - About Phone.
To disable the screen lock, go into Settings - Location and security.
Then under Screen unlock settings press Change screen lock. Then chose None.
To allow swear words in voice recognition, go to Settings - Voice input & output - Voice recognition settings. Then untick Block offensive words.
By default, the phone will actually recognise swear words, but will insert x's instead of the word.
To bookmark a website on your homescreen, go into your browser and find the bookmark of the page you want to create a shortcut for.
Then long press on the bookmark and select Add Shortcut to Home.
If you regularly visit certain websites, this can be handy as you will have a shortcut to the site on your homescreen.
If you have decided to ditch your iPhone in favour of Android, then there is a simple way to take your iTunes music, playlists and album art with you.
Simply go the Android Marketplace and download a Free App called Easy Phone Tunes. You will also need the computer version of the software, so go to http://easyphonetunes.com and download it from there.
Then, when that is done, turn your phone into a USB storage device (this will vary from device to device, but instructions are on the website).
Once your phone is connected to your computer, open the computer version of the software and select your device from the Easy Phone Tunes list. Then follow the instructions to Sync your media.