News.com reports that Time Warner Cable has started testing Mobile service in Kansas City in tandem with its broadband and cable services. This is the four-play future, and signals problems for traditional phone operators with wireless assets. Regular reader Charlie Sierra keeps saying that this is going to prove to the thorn in the side of phone companies. In fact he has suggested that Verizon should stop mucking around with MCI and instead use its might to go after Sprint and bust up the Sprint+Nextel deal. That’s what it needs to do in order to shut down all wireless options for cable guys.