T-Mobile and Verizon Won't Support RCS on Pixel 4

At launch, Verizon and T-Mobile won't support RCS on the Pixel 4 and Pixel 4 XL. RCS is an industry-standard messaging protocol designed to replace SMS and MMS, offering many of the features of Apple's iMessage. Verizon supported RCS on the Pixel 3. T-Mobile has been a vocal proponent of RCS, but only supports it on Samsung phones.