What is att support number? The customer support phone number of ATT Internet is +1-800.288.2020, +1-210-821-4105 (Click phone number to call).What is the phone number for att uverse? Phone Number of Tele Att Uverse is +1-210-821-4105 . The AT&T U-verse is an Internet based facility which is provided by an American based company named as AT&T. It includes the following services named as Internet based Television service, Broadband Internet and Internet based telephony system under the U-verse facility.What is the telephone number for customer service? 1-800-566-0065, Customers can also use this number to reach to the customer service representatives of the company. 1-800-238-0271 is the fax number of the company, which can be used to send the orders.
ATT Phone Number. +1-855-320_00,07. Customer Service. Why Do People Call ATT Tech Support? Customers call ATT tech support for a range of reasons, including: Help with installing software or setting up equipment or a device. Questions about how to operate software or a device. Troubleshooting problems with ATT products.