Wi-Fi Calling lets you talk and text from indoor locations where itâs hard even for a strong cellular signal to reach. Wi-Fi Calling can be used in the Domestic Coverage Area (U.S., Puerto Rico, and U.S. Virgin Islands) and from most international countries.
The U.S. Passport Card. This... is the U.S. Passport Card! This card can be used as an official I.D. in many countries abroad. However, it cannot be used for international travel by air. If you are going to travel to an international destination, you will still need to take your passport book with you.
However, you can also get a passport card. The US passport card can be useful in a number of situations. As US passport card can be used to enter Canada, Mexico, the Caribbean, and Bermuda by road or by sea, and can allow you to reenter the United States after such a trip. The US passport card cannot be used for any international air travel, but if you travel frequently to Mexico, the Caribbean, Bermuda, and Canada by land or water, the US passport card can actually make more sense than a passport book. The US passport card is less expensive to get then passport book, and is much smaller.