Industry watchers have speculated that the nation's largest cable provider could soon compete directly against the big four wireless providers — AT&T, Verizon, T-Mobile and Sprint. In October, a number of reports said Comcast was likely to exercise an option in its 2012 spectrum deal with Verizon that allows the cable provider to resell mobile service on Verizon's network. A Comcast representative declined to detail the company's plans, a Recode report said at the time.
Comcast also has filed to participate in an upcoming auction of wireless spectrum.
However, Comcast is not expected to use additional spectrum to operate the LTE cellular technology the big four offer. Instead analysts see Comcast leveraging a network of Wi-Fi hot spots it has built out in recent years to provide wireless service.
On Monday, Roberts said he didn't have any news to offer on whether Comcast would actually buy new spectrum. However, he said the deal with Verizon and its Wi-Fi network gives it plenty of options to compete in mobile.
"What I would report to you is I think we have more hot spots than any company with Xfinity Wi-Fi, and we've found it to be a fantastic way to get your content. It works better on Wi-Fi," he told CNBC's "Squawk on the Street" on the sidelines of the National Cable and Telecommunications Association's annual conference.
"People find Wi-Fi hotspots and they love it. If we can give you more of them, that's a winning strategy," he added.
Roberts said he is happy with the company he has now. He said Comcast is focusing on making sure it has access to consumers wherever they are through technology as well as content. As an example, he cited its recent deal to purchase DreamWorks Animation.
Disclosure: Comcast is the owner of NBCUniversal, the parent company of CNBC and CNBC.com.