AT&T was handing them out to customers who had bad signal a couple years back. My friend grabbed it since he was still with AT&T then and it works on Verizon's network. I've seen the unit and it clearly says AT&T microcell. So if you can snag one of those on ebay or craigslist, I'm pretty sure it'll work.I have been In places that have it and it works. My question is it free