AT&T Wireless
133 Old Wards Ferry Rd, Sonora 95370,  209 588-8278

HOURS: Mon-Fri 10am-7pm, Sat 10am-6pm, Sun 10am-5pm.
Cellular phones & accessories. AT&T is the only real provider for tourists with relatively good coverage in the Yosemite/Gold Country area, although coverage is pretty spotty in areas outside of the larger foothill towns. Verizon's coverage is also good (via Golden State Cellular) but roaming charges are an issue.