Cell Phone Use In Baja

If you're using your cell phone in Baja, chances are that you have one of the four main US wireless services: T-Mobile, AT&T (Cingular), Sprint or Verizon. You may have an easier time calling throughout Mexico with T-Mobile or AT&T, since they cover a lot more territory.

All of the major wireless networks will charge you extra to roam internationally, from as little as $0.59 to $1.49 per minute plus a monthly flat fee. More importantly, most plans require you to activate the international roaming service before you even leave the United States. To be safe, it is a good idea to check with your own wireless carrier before you leave for Baja to make sure that your phone has been activated for international roaming.

Once you are in Mexico with a successfully activated phone, you should have no trouble calling either locally or home to the United States.

Company	T-Mobile World Class Service	AT&T World Connect Mexico (Cingular)	Verizon	Sprint
Requires Activation?	Maybe. T-Mobile ONE plan offers unlimited calling, texting, and data. For other plans, activate online or by calling 611 from your phone or 1-800-937-8997 from any other phone	Maybe. AT&T unlimited plan offers unlimited calling, texting, and data. For other plans, activate before you go online or by calling 866.MOBILITY. If you have trouble roaming while in Mexico, call + 1-916-843-4685	Maybe. Go Unlimited, Beyond Unlimited and Above Unlimited offers unlimited calling, texting, and data. For other plans, before you leave the USA, verify that your international roaming has been activated added by dialing *611 or (800) 922-0204.	Maybe. The Unlimited Plus offers unlimited calling, texting, and data. For other plans, activate before you go by calling 1-888-226-7212.
International Activation	Dial "+" plus 1-505-998-3793 from your cell phone or landline to reach T-Mobile Customer Care internationally.	Dial "+" plus 1-916-843-4685 to reach AT&T International Customer Care.	Dial 001 (800) 711-8300 to reach the Verizon Global Support Team.	Dial 001 (817) 698-4199 to reach Sprint International Customer Care Team
Dialing to Mexico from USA	If you are calling a cell phone: Dial "+" plus (52)(1) (10 digit local number) If you are calling a landline: Dial "+" plus (52)(10 digit local number)	If you are calling a cell phone: Dial "+" or (011)(52)(1) (local number). If you are calling a landline: Dial "+" or (011)(52)(local number)	If you are calling a cell phone: 011 52 1 (10 digit local number) If you are calling a landline: 011 52 (10 digit local number)	If you are calling a cell phone: 011 52 1 (10 digit local number) If you are calling a landline: 011 52 (10 digit local number)
Dialing Locally in Mexico	Dial "+" plus country code plus 10 digit local number.	Land Line: Dial 011 52 (local number) Mobile: 011 52 1 (local number)	7 or 8 digit number	011 52 1 (10 digit local number)
Dialing Long-Distance within Mexico	Dial "+" plus country code plus 10 digit local number.	Dial 011 52 (local number) If it is a land line. Mobile 011 52 1 (local number)	01 + city code + 7 digit number	Dial as if calling from a land line in Mexico
Dialing to USA from Mexico	Dial "+" plus country code plus 10 digit local number	"+" plus country code or 001 plus 10 digit local number	Dial "+" then "1" and the 10-digit phone number	00 1 (area code) (10 digit local number)
Dialing Internationally from Mexico	Dial "+" plus country code plus 10 digit local number.	Dial "+" (country code)( ten digit local number)	Access Code plus Country Code plus 10 digit number	Access Code plus Country Code plus 10 digit number

Notes on carriers:

With most T-Mobile and AT&T phones, the "+"key will appear on screen if you press and hold down the "0"key.
Mexico City, Guadalajara, and Monterrey phone numbers consist of a 2 digit area code plus an 8 digit local number
If you don't want to get an international data plan, or pay large roaming data fees, suspend your data while away or remove your SIM card from your cell phone. Call your service provider to find out the best way to avoid astronomical data charges.

T-Mobile Customers:

To check voicemail while roaming internationally:

You can access voicemail anywhere in the world by calling your mobile number.
Interrupt the message by pressing the * (star) key
When prompted, enter your voicemail password.
Follow the menu prompts to check your voicemail messages.

Unless you switch your device off or activate Unconditional Call Forwarding on your device, you will be billed for all calls delivered to your voice mail box while roaming internationally. Mobile to Mobile minutes are only available through your T-Mobile USA network, not when roaming internationally.