RCS Universal Profile 4.1 boosts speed, privacy and E2EE

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Credit: Joe Maring / Android Authority

TL;DR

GSMA has published specifications for RCS Universal Profile 4.1, shifting focus toward backend reliability, E2EE interoperability, and platform stability over user-facing gimmicks.

Users gain native profile-sharing controls to explicitly choose who can view their name and profile picture in individual or group chats.

The switch to an optimized gRPC connectionless transport protocol delivers faster message delivery, less battery drain, and enhanced connection stability.

Following on the heels of RCS Universal Profile 4.0 , which brought flashy additions like native video calls and rich text formatting, GSMA is turning its attention to the underlying plumbing of modern texting. The organization has officially published specifications for RCS Universal Profile 4.1, shifting its focus to building a stronger, more reliable, and more securely interoperable foundation across devices, networks, and messaging platforms.

According to the official announcement from the GSMA , Universal Profile 4.1 aims to make cross-platform RCS messaging far less prone to backend glitches, with a heavy focus on refined End-to-End Encryption (E2EE) interoperability. While much of the update focuses on background operations, consumers stand to benefit from two key practical improvements: