WiFi and Cordless phones can get along just fine. Yes; there can be snags but they can be worked around and, in general, with a little care it will just work. In any case, none of the snags are fatal and all can be solved.
The brief how-to for WiFi & cordless is below but first just a brief note about our good friend Comcast.
The instigation of this post is a notice posted on Twitter.com (aka, a "tweet") reporting that a new Comcast telephone service customer was told by the service installer that it is "not an option" to use her cordless phone and a wireless WiFi router together.
That's not correct.


WiFi vs. Cordless Phones. No Problem!