[akhilcacharya]

So would it be possible to purchase this and use it as a primary phone service on a data-only smartphone?

[aroch]

That's what Fi is for: https://fi.google.com

[sithadmin]

Fi doesn't offer data-only plans. You can add data-only SIMs to your main account, but nobody gets out of paying the $20 base rate for unlimited calling and SMS/MMS.

[gknoy]

I would hear about this the day after I convince my wife to switch to Verizon... :D

[aviv]

There are a number of MVNOs coming to market with data-only SIM cards and their own branded dialer apps. Some have free international data roaming.