Google Fi makes clever use of the Pixel 4’s Dual SIM Dual Standby tech
Photo by Amelia Holowaty Krales / The Verge
Google’s MVNO wireless service — Google Fi — has offered certain users a unique benefit: it can piggyback on multiple networks. Depending on which one is stronger, some Android phones on Fi can use either T-Mobile, Sprint, or US Cellular. The feature is mainly used on Pixel phones, and now with the Pixel 4, Fi is taking advantage of that phone’s Dual SIM Dual Standby (DSDS) feature.
DSDS does pretty much what it says: two different SIM cards can be on “standby,” aware of the state for their respective networks. The Pixel 4, like many modern phones, has a physical SIM slot and an eSIM. Typically, a user would have a different network on each SIM so that they could use one for data and another for calls.
On the Pixel 4, Google is putting…