Service has been restored to about 250,000 Unicel cell phone customers in New Hampshire, Vermont, Maine and parts of Massachusetts and New York.
A Company spokeswoman says technicians worked to fix the outage, which was the result of a software issue at the company’s central processing unit in Colchester.
Service went out early Tuesday, and service was restored by the afternoon.
Rural Cellular Corporation, which owns Unicel, is based in Minnesota.
The company has more than 700,000 customers nationwide.