iOS 27 Adds New RCS Features to Messages App

Apple is introducing significant updates to its messaging infrastructure with the release of iOS 27, focusing heavily on the Messages app. According to 9to5Mac, the new software version includes several additions designed to improve the user experience, with a specific emphasis on enhancing Rich Communication Services (RCS) capabilities.

The most notable changes in iOS 27 are two key upgrades aimed at RCS conversations. These updates address long-standing limitations in cross-platform messaging, allowing iPhone users to interact more seamlessly with Android devices. The inclusion of these features marks a continued effort by Apple to standardize messaging protocols and improve interoperability between different operating systems.

Context and Background

The shift toward RCS support has been a gradual process for Apple, which historically relied on its proprietary iMessage protocol for iPhone-to-iPhone communication. By integrating robust RCS features into iOS 27, Apple is aligning its messaging platform with industry standards that support higher-quality media sharing and read receipts across different brands of smartphones.

According to 9to5Mac, the iOS 27 update includes "several welcome additions" to the Messages app. While the report highlights the RCS upgrades as the primary focus, it indicates that the broader Messages app receives multiple improvements. These changes are part of a larger trend in the mobile industry to move away from fragmented SMS-based messaging toward more feature-rich, data-driven communication standards.

Who Is Affected

These changes primarily affect iPhone users who regularly communicate with contacts using Android devices. For years, messages sent between iOS and Android platforms were limited to basic SMS/MMS capabilities, which lacked features like high-resolution image sharing, typing indicators, and reliable delivery confirmations. With the RCS upgrades in iOS 27, this gap is significantly reduced, providing a more unified experience for mixed-device conversations.

Users who rely on iMessage for all their communications will see fewer direct changes, as the proprietary protocol remains largely unchanged. However, the overall improvement in the Messages app’s architecture may lead to better performance and reliability for all users, regardless of the recipient’s device type.

What should you do?

Security and technology professionals should monitor the rollout of iOS 27 to assess how the new RCS features impact enterprise communication policies. As more organizations adopt cross-platform messaging solutions, understanding the security implications of RCS versus proprietary protocols is essential. Teams should review their current messaging strategies to ensure they align with the enhanced capabilities available in the new iOS version.

What to do and how to stay safe: iOS 27

• Review current messaging policies to ensure they account for the enhanced RCS features available in iOS 27.
• Test the new RCS functionality in a controlled environment to verify compatibility with existing enterprise communication tools.
• Monitor for any security advisories related to RCS implementation as the update rolls out to users.
• Educate users on the differences between iMessage and RCS to manage expectations regarding privacy and feature availability.

General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

What is new in iOS 27 for the Messages app?

iOS 27 includes several new additions to the Messages app, with two key upgrades specifically focused on improving RCS conversations.

Does iOS 27 change how iMessage works?

The source material focuses on RCS upgrades; it does not specify changes to the proprietary iMessage protocol, but notes general improvements to the Messages app.

Who reported on these iOS 27 features?

The details regarding the iOS 27 Messages app upgrades were reported by 9to5Mac.