iOS - Must Know Features

On all iOS devices:

1. Shake to erase current edited text

2. Change time zone in settings/general when abroad

3. Add Chinese dictionary to translate the unknown words

4. Hold 123 key and move to the number to enter number

5. Say "hi Siri" in plugin mode
6. Turn off cell data access for apps to reduce the 3G/LTE consumption
7. Add Chinese calendar into your calendar

On iPad:

1. Multi-Fingers gestures