if you don't have phone service buy your own modem and router. Buy a Docsis 3 modem with at least 16 downstream channels and a good 802.11ac router. The speed package you are on will determine your need for down stream channels but as speeds increase the lower end modems will become inadequate sooner. If you are in a house with less wireless interference in the area you can get by with an older router but it's rare to get full wireless speeds on 802.11n anymore. I run 2 Cisco 802.11n AP's (basement and 2nd floor) and it works great but I have very little interference here, the newer neighbor hoods and apartment buildings are more of a challenge. I also have DSL so in reality I could get my full speed on an 802.11b router, but like everyone else with a wife and kids now days we have wireless devices everywhere. I have 12 down on every device everywhere in the house haha!