phone number to call att customer service
AT&T International Services. 1-800-335-4685 (24/7),From Overseas: 1-916-843-4685 (24/7) You can call this phone number to contact att customer service for orders, billing and technical Support regarding AT&T phone plans and upgrades. 1. First Log-in to your at&t account with your User ID and Password at AT&T Customer Center. 2. On upper menu click the tab âmyAT&Tâ.