Google Fi has internally released fixes for the SIM card issues that several subscribers were facing. The search giant is also issuing $60 bill credits to those who faced problems with their SIM ...
Recently, a lot of subscribers to Google Fi complained that they were facing a lot of issues with their SIM cards. Phones weren't detecting the SIM cards even though they had been inserted.
For example, Google Fi offers data-only SIM cards for tablets and other devices, and there is no extra charge for these. The data-only SIM usage just counts against your data allotment.