Credit: Edgar Cervantes / Android AuthorityTL;DRSome Google Fi users reported that they’re unable to use mobile data.These users also saw an alert claiming that their SIM cards were “no longer active.”Google is aware of the issue, but you can try toggling international calls in the meantime.Google Fi is a pretty solid MVNO, offering simple plans, a built-in VPN, data roaming on several plans, and more. Unfortunately, it sounds like the service hit a major snag late yesterday.Some Google Fi subscribers reported on Reddit that they were unable to use mobile data, while a few users said calls were also affected. “Your SIM card is no longer active,” read an official alert seen by affected subscribers.