good comparison of plans only using a cell phone. BUT the story changes as soon as you add ipads, tablets etc. to the plan. Verizon charges $10/mo just to be connected even if the device isn't used. Google Fi charges only for the data used - NO monthly fee for the device to sit on my dresser! I actually have 3 devices plus my Audi Connect (4 totla) that i only pay for data used. They are all included on the single $20/mo plan. In my case, just to have the devices added to my Verizon plan costs $40/month. I don't use a lot of data, but do use my devices outside the house. Comparible Verizon plan was $110 for 5Gb whether i used data or not, my Google Fi is $20 + data at $10 per GB. I expect to be around 1-2Gb/mo which is a low $60/month. I looked at this plan when I started using my old cell phone as a GPS device to record mtn biking rides thru Strava. Yes, an old cell phone can be used as a data-only device. Oh, btw i got all data-only SIM cards free from google.