The recent Galaxy S7 Bootloader-gate for the Qualcomm Snapdragon 820 variants, especially on US carriers like T-Mobile which are usually bootloader-unlock-friendly, gave a lot of people a reason to be vary of their purchase decisions.
The former T-Mobile store owner could spend decades in prison.
iOS users are unaffected (for now).
The new $15 dollar Google One subscription is exclusively available for T-Mobile customers.