I have Verizon, I’m using a Quantum Gateway that I bought off craigslist for $50 from some guy who paid the $200 to own the router outright. Anywho, it’s the exact same one that I was renting, all I had to do was plug it in and use the admin login (found on the sticker on the router) to re-setup the WiFi name and reset the password. After that, was good to go. So yeah you can use your own. If you have cable, Verizon highly recommends their’s (the Gateway) because apparently it messes with the signal to the cable box. I don’t use Verizon’s cable, but buying my own saved me $12/month.