At the Destination (16)

■ The process until connecting to the internet (PDF)

■ Why did the remaining balance run out so quickly?

■ What happens when the data capacity runs out or expires?

■ What if you can pick up a signal but cannot use the Internet?

■ "Access Point Name settings are not available for this user" on my APN settings (Android)

■ What should you do if I receive the message "SMS messages sent and received to activate FaceTime and IMessage may be charged by your carrier"?

■ Where is the IP address?

■ What should you do when you get a notification that your phone number is currently being used by iMessage and FaceTime on my new iPhone?

■ Is it possible to choose/select the network provider for the line?

■ Why is it necessary to turn on data roaming?