iPhone
Send a photo or video in Messages.
To send a photo or video using Messages, tap and select the photo or video you’d like to include. Tap again to add another photo or video. Tap Send.
Access the camera quickly from any screen.
Use Control Center to access your iPhone camera quickly from any screen, even if your iPhone is locked. Swipe up from the bottom edge of the screen to reveal Control Center. Tap  to open Camera.
Delete a shared Photo Stream.
In Photos, tap Shared, then tap Edit. Tap next to the photo stream you’d like to delete and then tap Delete. The shared photo stream will be deleted from your device and the devices of subscribers.
Make them a VIP.
Add your most important contacts to your VIP list and their messages will appear in the VIP mailbox. Tap the sender’s name in an email, then tap Add to VIP. A will appear by their name. Note: You can set … Continue reading
See what Siri can do.
When you press and hold the Home button, Siri beeps and asks, "What can I help you with?" Tap to see a list of the ways Siri can help you. You can talk to Siri like you’re talking to a … Continue reading
Sign in to Twitter, Facebook, Flickr, or Vimeo.
To share to Twitter, Facebook, Flickr, or Vimeo directly from the Photos app, sign in to your account in Settings. Then, just tap in Photos or any other app that supports sharing photos and videos.
Add a shortcut to your Home Screen.
To create a shortcut for a webpage on your Home Screen, tap , then tap Add to Home Screen.
Delete a message in Mail.
To delete a single message or conversation without opening it, swipe left across the message and tap Delete. If the message is open, just tap .
Edit or delete a conversation.
To edit a conversation, tap and hold part of the conversation, then tap More. Select the parts you’d like to delete and tap . To delete an entire conversation, swipe left across the conversation in the Messages list, then tap Delete.
Search within a page.
When reading a webpage in Safari, you can search within your current page. Type your search term in the search field and scroll down to “On This Page” to view results. Tap to see the next occurrence on the page.