Just because your cellphone works at home doesn't mean it'll work everywhere in the U.S. (thanks to the fragmented cellphone system in the United States). If you live in the U.S., it's a good bet that your phone will work in Arizona's major cities, but take a look at your wireless company's coverage map on its website before heading out; T-Mobile, Sprint, and Nextel are particularly weak in rural areas. (To see where GSM phones work in the U.S., check out www.t-mobile.com/coverage.) If you're visiting from another country, be sure to find out about international calling rates and roaming charges before using your phone in the United States. You could ring up a huge phone bill with just a few calls.
Options for staying connected in the U.S. include buying an inexpensive phone and prepaid minutes from such companies as TracFone (www.tracfone.com). These phones are readily available in such stores as Wal-Mart and Target and usually cost less than $20. Prepaid minutes might cost $20 for 60 minutes, though double-minute plans can lower this cost. Another alternative if you are traveling with your laptop computer or have a smart phone is to install Skype (www.skype.com), a VoIP (voice over Internet protocol) program/app that allows you to use your computer or smart phone as an Internet-based telephone. Doing this allows you to call other Skype users at no charge.
If you're heading down into the Grand Canyon and want to rent a satellite phone, contact Skycall Satellite (www.skycallsatellite.com; tel. 801/463-1869).
Many convenience groceries and packaging services sell prepaid calling cards in denominations up to $50. Many public pay phones at airports now accept American Express, MasterCard, and Visa. Local calls made from most pay phones cost either 25¢ or 35¢. Most long-distance and international calls can be dialed directly from any phone. To make calls within the United States and to Canada, dial 1 followed by the area code and the seven-digit number. For other international calls, dial 011 followed by the country code, city code, and the number you are calling.
Calls to area codes 800, 888, 877, and 866 are toll-free. However, calls to area codes 700 and 900 (chat lines, bulletin boards, "dating" services, and so on) can be expensive -- charges of 95¢ to $3 or more per minute. Some numbers have minimum charges that can run $15 or more.
For reversed-charge or collect calls, and for person-to-person calls, dial the number 0 then the area code and number; an operator will come on the line, and you should specify whether you are calling collect, person-to-person, or both. If your operator-assisted call is international, ask for the overseas operator.
For directory assistance ("Information"), dial 411 for local numbers and national numbers in the U.S. and Canada. For dedicated long-distance information, dial 1, then the appropriate area code plus 555-1212.
Internet & Wi-Fi
Nearly anywhere you go in Arizona, even on Indian reservations, you can find some way to connect to the Internet. Among the more common places to get access to the Internet are cybercafes, public libraries, and in hotel lobbies where computers are often available for guests' use.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.