Another big cable company says it wants to do cellphones too

A day after cable giant Comcast said it planned to start selling cellphone service , rival Charter says it wants to have a wireless business too.

That could mean more competition in the cellphone business, where Verizon and AT&T dominate.

Charter Communications became a huge cable operator with the purchase of Time Warner Cable in May. It has about 25.6 million customers; Comcast has more than 28 million.

Charter CEO Tom Rutledge said at an investment conference in New York Wednesday that Charter has told Verizon it's interested in activating a deal with the phone company to resell its cellular network.

Comcast said Tuesday that it would launch a wireless service that runs on its own Wi-Fi as well as Verizon's network by the middle of 2017.