@3-Acitos
Thanks for the inquiry.
To use a Roku device, you will simply need internet access.
However if you are using authenticated channels that you were using your Comcast TV cable service to access, you will no longer have access to those channels unless you sign in with your new TV provider.
For more information about authenticated channels, visit our Support page here: Will I have to pay for channels?
Thanks,
Danny
Danny R.
Roku Forum Moderator