Problem: Installed a new or reinstalled an existing O.S. (Operating System) onto your device and now you can not send or receive emails nor access the internet.

Solution: You need to reregister your device on the cellular network.

Go to Options>Advanced Options>Host Routing Table. Click your trackwheel and choose "Register Now".

You will then have a message in your inbox stating that your device has sucessfully been registered with the network.

Within seconds (sometimes a matter of a few minutes), email will be active and a browser icon will appear on your homescreen, confirming that you are now receiving data service.