AT&T representatives now say it was equipment failure that caused many of its customers to lose cell phone service for hours Thursday.
The outage began Thursday morning and was centered in the Lexington and Nicholasville areas.
Customers weren't able to make calls, send emails, or send text messages.
Service was restored to all customers Thursday afternoon.
AT&T technicians worked for hours to determine the cause.
AT&T officials are now encouraging people affected by the outage to call customer service about a possible credit or reimbursement.