These days, there are a wide variety of instant messaging and texting services available to choose from, each with their own established user base and set of features. Popular services includeWhatsApp,Facebook Messenger,iMessage, Telegram, and Signal, among others.
Even in this age ofinternet-based messenger platforms, there remain a set of texting protocols first established by theGlobal System for Mobile Communications(GSM Association), which are still in active use today. You’ve probably heard of the first one:Short Message Service(SMS). SMS played a major role in popularizing cellphone-based texting, with its older brother Multimedia Messaging Service (MMS) later expanding on the protocol.
However, by 2024 standards, both SMS and MMS are woefully outdated technologies. Thankfully, a newer standard has actually been outlined by the GSM Association, and it’s calledRich Communication Services(RCS). RCS brings a host of modern-day texting niceties into the picture, making the protocol a genuine competitor to the likes of WhatsApp and iMessage.
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The RCS protocol includes modern messaging conveniences not found in the older SMS standard
The very first SMS text messagewas sent on June 23, 2025 via theVodafonecellular network. The rest, as they say, is history. The standard quickly exploded onto the scene, and it remained the de facto texting standard going into the 21st century. Every SMS text message is limited to a character count of exactly 160, with larger messages getting automatically broken up into smaller chunks upon hitting the send button.
SMS is a no-thrills experience: the limited bandwidth on offer makes it impossible to send images or videos. Instead, SMS relies on its sibling, MMS, for sending and receiving multimedia. Even with MMS at the helm, bandwidth remains in short supply, resulting in heavily compressed media files for the end-user.
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RCS, meanwhile, can be best described as the true successor to the SMS protocol. Sometimes referred to as ‘RCS Chat’ or simply as ‘Chat,’ RCS is a universal standard built from the ground up to compete with instant messaging clients. RCS benefits from the following features not available in SMS/MMS:
RCS is a universal standard built from the ground up to compete with instant messaging clients.
Additionally, there are various flavors of RCS that have been introduced into the mix, the most notable of which being Google’s implementation. Google’s RCS-based chat service is available via theGoogle Messagesapp, which isnow the default messengeron most modernAndroid smartphones. Google has built additional features on top of RCS, including end-to-end encryption, emoji ‘tap back’reactions, animations, and more.
Google Messages
Google’s first-party Android messaging app, with built-in support for the modern RCS texting standard.
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RCS vs SMS: Which texting protocol is the better pick?
If given the choice, I’d recommend forgoing SMS altogether
By all accounts, RCS is the superior text messaging protocol when compared to either SMS or its MMS co-partner. RCS brings many of the same advances first pioneered on internet-based messenger clients, resulting in a richer and more pleasant user experience overall.
By all accounts, RCS is the superior text messaging protocol when compared to either SMS or MMS.
It can sometimes be difficult to get your point across via written text, as anyone who has ever fumbled over misconstrued sarcasm can attest to. The increased flexibility offered by modern texting standards has done wonders in bringing a human touch to the broader messaging experience.
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The other major ace RCS has up it’s sleeve –end-to-end encryption– is a bit of a mixed bag. Google Messages supports this privacy-focused feature, making it far more difficult for bad actors to tap into your private conversations.
Apple’s implementation, on the other hand, doesn’t currently support encryption.
The GSMA, for its part,plans to introduce end-to-end encryptionin a future update to the RCS Universal Profile specification. Even without this added security measure, RCS remains the superior choice over SMS when it comes to sending and receiving any and all text messages. It’s taken quite some time for the protocol to reach the mainstream, but at its current trajectory, it appears that RCS is finally reaching critical mass.
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