Google Fi is a cell phone service that only charges you for the data you use. It cost $20 a month for unlimited talk and text. WOW! Data is only $10 per gigabyte and you get a refund for the data that you don’t use. Say your plan is for 1 GB per month and you only use 500MB you will be refunded $5. Google Fi uses to carriers for its network T-Mobile and Sprint but also uses Wi-Fi and switches between them automatically. This requires a phone with special circuitry that does this action. The only phones doing this now are the Google’s Nexus 6, Nexus 5x and the Nexus 6p. More phones coming soon.
Google Fi, Reasonably Priced Cell Phone Service