BMW recently sent out an email of impending loss of 3G connectivity.
> The decision to phase out 3G network technology was made at the discretion of the respective cellular carriers and lies beyond the control of BMW. As a result of the sunset of 3G service by wireless carrier partners, by February 2022 your vehicle will no longer be able to receive any ConnectedDrive/BMW Assist services, such as BMW Assist eCall, Advanced Real‑Time Traffic Information, Remote Services and BMW Online, depending on your BMW model.
> The decision to phase out 3G network technology was made at the discretion of the respective cellular carriers and lies beyond the control of BMW. As a result of the sunset of 3G service by wireless carrier partners, by February 2022 your vehicle will no longer be able to receive any ConnectedDrive/BMW Assist services, such as BMW Assist eCall, Advanced Real‑Time Traffic Information, Remote Services and BMW Online, depending on your BMW model.