Guam Country Code +1-671

Country code guide are providing you a detailed information on country & area codes in Guam, you find that most people have a series of two digits from their phone number in GU (for example, +1-671). There is no longer distance charge from the Guam phone number to call the landline and mobile number in Guam (apart from customer service numbers, the rate can be charged per minute). The process is similar to calling from Landline: initial country code + destination country code + phone number.