RCS 4.0 is here: What changed and why it matters for business messaging

We all know RCS as the reliable, practical, and easy-to-overlook older brother of flashier messaging apps. Now, he’s shown up in a sharp suit with confidence to match; still dependable but finally turning heads and demanding attention. Hello, RCS 4.0.

This new version of the RCS Universal Profile introduces richer, more dynamic conversations, without compromising the dependability businesses rely on. If you’re responsible for customer communications, marketing, or digital engagement, this is the update you’ll want to get a firm grasp of.

Let’s break down what RCS 4.0 introduces and what it means for your messaging strategy.

What is RCS 4.0?

RCS 4.0 is the latest evolution of RCS Universal Profile, the global standard defined by the GSMA to ensure RCS works consistently across devices, networks, and platforms.

At its core, RCS (Rich Communication Services) for Business upgrades traditional SMS with features people expect from modern messaging apps, such as rich media, interactivity, branding, and verified sender identities. Universal Profile 4.0 builds on this foundation and brings RCS closer than ever to being a true conversational channel for businesses.

If you’re new to the topic, our guide on how RCS works is a good place to start before diving deeper into the key updates.

What’s new in RCS Universal Profile 4.0?

RCS 4.0 doesn’t reinvent the channel; instead, it removes key limitations that previously held it back for advanced customer interactions.

Here are the most important updates regarding P2P RCS messaging.

Messaging initiated video calls (MIVC)

For the first time, RCS allows video calls to be launched directly from a messaging conversation.

This means a 1:1 or group RCS chat can seamlessly escalate into a live video call without switching apps or sending links. Conversations can include up to 32 participants, making this especially relevant for customer support, consultations, or guided sales experiences.

Key things to know:

• Video calls are initiated inside the RCS thread
• Works for both individual and group conversations
• Designed for smooth escalation when text is no longer enough

For businesses, this creates a natural path from chat to live interaction, without interrupting the customer journey.

But video is only one part of the story. RCS 4.0 also improves how messages themselves are structured and understood.

Rich text formatting in business messages

Until now, RCS business messages were visually richer than SMS, but still limited when it came to text emphasis. RCS 4.0 changes that.

Businesses can now use basic rich text formatting, including:

• Bold for emphasis
• Italics for tone or context
• Strikethrough for corrections or updates

While this may sound simple, it significantly improves message clarity, especially for offers, instructions, or time sensitive updates.

Alongside clearer text, RCS 4.0 also raises the bar for how media is delivered and experienced.

Higher quality media with device-aware delivery

Media quality has always mattered in messaging, and RCS 4.0 takes a big step forward here.

The new profile introduces media format negotiation; meaning images, videos, and audio files are automatically optimized based on the receiving device and network conditions.

In practice, this results in:

• Better image and video quality
• Fewer failed or degraded media deliveries
• A more consistent experience across Android and iOS devices

This is particularly important for brands using RCS for product discovery, visual storytelling, or support scenarios that rely on screenshots and video clips.

Even with these richer capabilities, consistency and reach remain essential, which is something RCS 4.0 continues to prioritize.

Backward compatibility and fallback behavior

Despite all the new capabilities, reliability remains a core principle of RCS.

RCS 4.0 continues to support graceful fallback to plain text when rich features aren’t available. For instance, when a user is temporarily limited to SMS.

This ensures your message still gets delivered, even if the full RCS experience isn’t possible at that moment. From a business perspective, this ensures continuity; your messages still land, even when rich features don’t.

So how do these technical improvements translate into real business impact?

What RCS 4.0 means for businesses

So what do these changes actually unlock for brands?

The biggest shift is that RCS is no longer just a richer SMS alternative. With video escalation and improved content controls, it becomes a true conversational engagement channel.

What does this mean?

• Sales conversations can include live product demos or consultations
• Marketing messages can come across clearer with structured, scannable text
• Complex issues can be resolved faster, reducing drop-offs and channel switching

All of this happens inside the native messaging app, where customers already spend their time.

To put this into perspective, it helps to look at how widely RCS is being adopted today.

Where RCS adoption stands in 2026

RCS growth has been steady for years, but recent developments have pushed it into the mainstream. In fact, RCS experienced a 311% growth from 2024, a clear sign the channel hit an inflection point.

With Apple enabling RCS support, the channel is no longer fragmented across ecosystems. Combined with operator support and Google’s continued investment, RCS is now operating on a global scale.

Industry projections estimate around 3.8 billion RCS users globally by the end of 2026, making it one of the largest addressable messaging channels for businesses.

You can explore adoption trends and usage data in more detail in our RCS statistics overview.

With adoption accelerating, the next question is what businesses should do to take advantage of it.

What businesses should do now

RCS 4.0 isn’t something to “wait and see” about anymore. It’s a signal that business messaging is moving toward richer, more human conversations.

If you’re evaluating next steps, consider:

• Reviewing where RCS already fits into your customer journeys
• Preparing content and message templates that take advantage of rich text and media
• Partnering with a provider that supports the latest RCS standards at scale

To go deeper, our complete RCS guide walks through use cases, setup, and best practices.

The next step is turning strategy into action and choosing the right platform to support it.

Start exploring RCS with Infobip

RCS 4.0 isn’t just an incremental update; it’s a clear step toward messaging that feels more human, more immediate, and more capable. With video escalation, sharper media delivery, and improved message clarity, the channel moves beyond “better SMS” into something far more powerful: a true conversation layer between brands and customers.

The takeaway is simple: messaging is no longer just about sending information; it’s about resolving, guiding, and engaging in real time, without forcing customers to switch channels.

With adoption accelerating and the ecosystem finally aligning, RCS has stepped into a new role of a front-and-center channel for customer engagement. With that shift from wallflower to main character, RCS 4.0 brings businesses closer to customers.

If you’re ready to see how RCS can work for your brand, explore Infobip RCS and start building next-generation messaging experiences today.