Comcast has started launching its Xfinity Mobile phone service

It appears that Comcast has quietly launched Xfinity Mobile, its $65 / month unlimited mobile service. The official website now allows Xfinity internet customers to select a plan and sign up for the service, which is currently offered at a discounted rate of $45 a month.

Comcast says the service will be available throughout its current markets. “We are beginning to introduce Xfinity Mobile to customers,” a company representative tells The Verge, nothing that the service will continue to roll out to stores over the “coming months.”

Xfinity Mobile was officially unveiled in April. It offers current Xfinity customers the option to add cellular service without charging line access fees, and allows families to have some phones on an unlimited plan while others can be on pay-as-you-go. The service runs on Verizon’s network of cell towers, and download speed throttles after 20GB. The pay-as-you-go plan starts at $12 per gigabyte.

Disclosure: Comcast is an investor in Vox Media, The Verge’s parent company.

Update May 18th 12:36PM ET: This story has been updated to clarify Xfinity Mobile availability.