Keep your phone and tablet private

Be the only one who can access your device

Jailbreaking devices leaves your device vulnerable

Don't allow your data to be copied off the device

Use the trusted app store

check out how your data is used by reviewing privacy settings

If it doesn't make sense that an app needs your location, DON'T LET IT

if your device is accidentally left unattended, ensure that it locks itself

Social Networking, Mobile Banking, etc.