Simply say, "read my e-mail," and Siri will tell you who the email is from, who it is to, and tell you the date it was received. She'll go on to read the entire e-mail. You can specifically ask for e-mails from a certain individual, too, or just ask her to read the latest e-mail.
Some will say that you only need to say "Planes overhead" or "What flights are above me?" but that doesn't always work. CNET writer Jason Cipriani found out that you need to say the following: "What Wolfram what flights are overhead."
5. Shake to undo and redo texts
Holding down delete isn't always fun, especially if it's a lot. Just shake your phone and an "Undo Typing" option comes up. Shake again and you'll get "Redo Typing."
For some reason, you have the insatiable urge to purchase in-app purchases in Candy Crush and the like. Want to get a grip? Go to Settings > General > Restrictions -> Enable Restrictions, and scroll until you see In-App Purchases. Disable it.
Instead of having a basic vibration, make your very own. You can also assign these to specific people so you can distinguish between something you care about and something you don't. Go to Settings > Sounds > Ringtone > Vibration > Create New Vibration. Have a blast! To add a custom vibration for a contact, do this in the Contacts portion of your phone.