In today’s digital age, messaging has become the core of how we communicate with one another, connecting not only friends and families but also businesses with consumers. While SMS messaging has been the standard for text communication since the 1990s, a new protocol known as Rich Communication Services (RCS) is emerging which is expected to overtake SMS. RCS is being heralded as the next big leap in messaging, offering new interactive elements and more flexible messaging. In this post, we’ll explore what RCS is, how it differs from SMS, and what the future looks like with RCS support.

Rich Communication Services, or RCS, is a next-generation messaging protocol developed to replace SMS, bringing modern, app-like functionality directly into native messaging apps. RCS supports both person-to-person (P2P) and application-to-person (A2P) messaging, which means it’s geared not only for individual conversations but also for businesses to engage with customers. Unlike SMS, which is limited in features, RCS enables advanced message capabilities such as file sharing, read receipts, and rich media—all delivered over data or Wi-Fi rather than traditional cellular networks, making messaging both cheaper and richer in experience.

RCS is packed with features that make it a substantial upgrade over SMS, bridging the gap between basic text messaging and the richer experiences people expect from modern communication apps. Here’s a closer look at what RCS brings to the table:

Rich Media Capabilities: Unlike SMS, which limits users to plain text or basic image attachments, RCS supports sharing of a wide range of media, including high-resolution images, videos, and GIFs. Users can also send document attachments like PDFs, making RCS ideal for both personal and professional communication.

• Verified Branding for Businesses: One of the standout features of RCS is the ability for businesses to verify their identity. This means that users can be assured they’re interacting with legitimate companies rather than potential spammers. Verified branding establishes trust by building credibility, especially as more consumers use messaging to interact with brands for customer support, promotions, and service inquiries.
• End-to-End Encryption: Privacy is a major concern in digital communication, and RCS addresses this with end-to-end encryption for enhanced security. This encryption means that only the sender and recipient can read the messages, offering peace of mind that sensitive information remains private. End-to-end encryption puts RCS on par with secure messaging apps, ensuring user conversations are protected against potential eavesdropping or data breaches.
• Enhanced Message Types: RCS doesn’t just improve text messaging—it redefines it with interactive elements like carousels, rich cards, and suggested action buttons. For example, businesses can create messages that include product images in a carousel format, allowing users to scroll through options without leaving the messaging app. Action buttons enable users to book appointments, make purchases, or follow links directly from the message. This level of interactivity creates a smoother, more convenient experience, enabling users to take action immediately, without having to switch to a different app or website.
• Read Receipts and Group Chat: RCS brings long-awaited features to messaging, such as read receipts, typing indicators, and the ability to create group chats with seamless functionality. These additions allow users to see when someone is typing, when a message has been delivered, and when it’s been read, adding a layer of real-time awareness to conversations. Importantly, RCS supports group messaging between Android and Apple devices, creating a cross-platform experience that finally enables group chats with advanced capabilities across these ecosystems. This functionality mimics the experience users have come to expect from services like iMessage, fostering a unified messaging experience across platforms.
• Cross-Platform Like and Statuses: RCS supports the ability to "like" messages, react with emojis, set statuses, and receive updates from contacts. This feature bridges the gap between iOS and Android, allowing users on both platforms to interact in ways that were previously limited to certain devices. By enabling message reactions and real-time updates, RCS brings the type of engagement users expect from social media or dedicated messaging apps directly to their SMS platform.
• App Integration and Services: A significant advantage of RCS is its integration with other applications and services, allowing users to accomplish tasks directly within the messaging app. For instance, users can book appointments, make reservations, confirm orders, or even complete payments without leaving the conversation. This functionality is particularly useful for businesses looking to provide seamless service experiences, as customers can engage in a full transaction, from browsing products to completing a purchase, all within their RCS-enabled messaging app.

Enhanced user experience

SMS is limited to 160 characters, whereas RCS can handle up to 8000, offering more space for meaningful communication. Additionally, unlike SMS, which often gets cluttered by spam, RCS messages go through a verification process to ensure message authenticity, reducing the likelihood of spam reaching users.

Increased engagement and interaction

While traditional SMS messages have always had high open rates and generalized click-through rates (CTR) range from 20-35%, whereas RCS campaigns have shown 11% revenue growth and a 130% boost in CTR due to richer, more engaging content. RCS Business Messaging opens new avenues for monetization, enabling businesses to deliver multimedia-rich campaigns that offer an immersive customer experience.

While RCS came out in 2007, RCS adoption has been gradual, influenced by carrier and device compatibility issues. Mobile carriers and manufacturers have been slow to adopt RCS across the board, although most carriers in the US now support it. iPhones currently support RCS only for P2P use, with verified business messaging expected in iOS 18.2. RCS is supported on Android devices with version 5.0 and above, and iPhones with iOS 18+. Messages sent to unsupported devices will default back to SMS, ensuring delivery but losing the advanced features.

With RCS making its way onto iPhones in 2024, it is set to gain more traction, marking a significant step toward replacing SMS as the global messaging standard. RCS offers an iMessage-like experience across devices without needing any third-party apps, making it easier for consumers to enjoy advanced features natively within their native messaging app.

Companies like Smobi are already leveraging RCS to deliver impactful e-commerce messages, like sale alerts, special promotions, and abandoned cart reminders. RCS also allows businesses to access high-level analytics such as read receipts and click-through rates, enabling detailed performance tracking and optimization.

As messaging continues to evolve, RCS brings advanced features that address many limitations of SMS, making it a compelling alternative for both consumers and businesses. While SMS still serves as a reliable fallback, RCS is poised to become the go-to standard, especially with its imminent arrival on iPhones. The future of messaging will likely lean heavily on RCS, promising a richer, more interactive experience that will transform how we communicate and engage with brands.