Cancun Hotels Kuartos Mexico Reservations made easy!: 

Cancun communications
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Kuartos.com on 19 October, 2007 10:28:00
 
Cancun has all the communication services of a modern and cosmopolitan city:
widespread Internet access, local phone service by credit card or prepaid
calling card and cellular phone rentals are all offered.
Areas around Tulum and through the Sian Ka'an reserve, do not have telephone
services, but a rented cell phone can always be of use if you so desire.