Private Browsing. We all know what it's for… shopping for presents, right? Handily, Apple has finally seen fit to include the feature in iOS. Simply head to Settings > Safari and swipe on Private Browsing. There, your secret's safe with us.
Email formatting
Give your emails a touch of style with the new text formatting options. Simply double-tap a word or paragraph in the body of your message and select the arrow rightmost of the floating menu. Finally, tap the leftmost option that appears and select from Bold, Italics and Underline.
Twitter integration
Twitter is baked right into iOS 5, and it's awesome. Head to Settings > Twitter and fill in the username and password entries. Now whenever you snap a photo, record a vid, mark a map location or find an interesting web page or YouTube clip, you can tweet it directly via the action button. It's gonna get busy...
11. Good vibrations
Want to know who messages or calls you simply from the vibration your phone makes? Go to Settings > General and in the Accessibility screen turn on Custom Vibrations. Now back in Settings, go to Sounds and tap Vibration > Create New Vibration. Go ahead: tap out a vibration; when you're done, hit Save. Now you can assign it to a contact from within the Phone app.
Default email address
Sick of having to select your most-used email account when sending messages? iOS 5 lets you select a default account, with system-wide effect. Go to Settings > Mail, Contacts, Calendars and scroll down to Default Account. Nix the problem with a tick.
Send a voice memo
iMessage is Apple's new instant messaging service allowing iOS users to communicate freely using texts, photos, videos and so on. Mix things up and surprise a friend by sending a voice memo instead: launch the Voice Memos app and record your memo in the usual way. Now tap the triple-lined button, select Share > Message and finally, choose your recipient.
Lock screen camera
Remember how annoying it was having to unlock your iPhone before you could take a photo? By the time you got round to it, nine times out of ten the moment was long lost. But no more. When in the lock screen, double-click the Home button and a Camera button appears; tap it. Hey, you're in the Camera app! Don't fret - the rest of your phone's contents is still locked down.
That's easy to find! 
