The Project Fi data-only SIM is my favorite deal in wireless
Project Fi is Google’s specialized wireless service designed primarily for Google’s own phones. It doesn’t get much attention because, in order to use it, your main phone pretty much has to be either a Google Pixel or a Nexus device. It hasn’t kept up with the trend of unlimited data that other carriers are doing now, but it does have a refreshingly simple business model.
Here’s how it works, if you don’t know: you pay $20 per month for your phone and $10 per GB of data that you use. That’s pretty much it. Additional phones are $15 per month and use the same data bucket. If you don’t use the data, you just pay the base rate of $20. If you use more than you planned, your “overages” are just charged at that $10 / GB rate.