mobile phone numbers have a designated prefix: - 044 -- mobile phone (044 + area code + number) For example, when calling within area code 33, a Guadalajara mobile phone would be dialed as: - 044 33 - xxxx xxxx This prefix is dropped when the number is dialed from another city in Mexico and the domestic prefix - 01 - is since calling-party-pays calls can only be made when the mobile subscriber is being called from the same local area. This regulation changed since November 8, 2006, enabling calling-party-pays nationwide (prefix - 045 - ). However, some telco operators have refthe new scheme. Outside the country, mobiles are dialed with a "1" prefixed before the area code effective from 4 November 2006: - +52 1 33 - xxxx xxxx