RCS 4.0 is here, and it gives Android messaging something it has lacked for years: a credible answer to iMessage’s polish. The new standard, announced by GSMA on March 26, 2026, adds in-app video calls, rich text formatting, and smarter media handling – the sort of upgrades that make texting feel less like a compatibility exercise and more like a real platform.
That won’t topple iMessage overnight. But it does make the gap smaller at exactly the wrong time for Apple, especially with end-to-end encryption between iPhone and Android now moving into the mix. If RCS keeps improving on both sides, the old blue-bubble-versus-green-bubble split starts to look less like a moat and more like an inconvenience.
What RCS 4.0 adds
The headline feature is Messaging-Initiated Video Calls, or MIVC. Instead of bouncing users into a separate app, the call lives inside the conversation, which means people can join late and chat history stays attached to the thread. That’s a small design choice with big consequences: messaging feels coherent, not duct-taped together.
RCS 4.0 also brings native rich text formatting and fallback handling when messages drop down to SMS. Media gets a boost too, with support for identifying what the receiving app can handle so the service can pick better encodings for photos, videos, and audio. In plain English: fewer blurry compromises, fewer awkward formatting failures, and less of that ”why does this look worse on my phone?” energy.
- In-app video calling with conversation continuity
- Rich text formatting with plain-text fallbacks for SMS
- Media optimization for audio, video, and images
Apple’s encryption move changes the tone
Apple’s iOS and iPadOS 26.4 update, released on March 24, 2026, includes a beta for RCS end-to-end encryption between Android and iOS. It’s not fully rolled out yet, and support still depends on devices and carriers, but the direction is obvious: the two ecosystems are being forced closer together whether they like it or not.
That matters because encryption was one of the biggest holes in cross-platform RCS. Apple has long used iMessage as a quality-and-security differentiator, while Android messaging has been the messy cousin in the room. Once encryption is in place and RCS 4.0 features become common, Apple’s advantage looks less unique and more like a head start that’s finally getting chased down.
The bigger problem is adoption
The catch is that better standards do not magically fix messy implementation. Google has shifted more of RCS responsibility to carriers, and that has created the sort of uneven experience that turns users off fast. One person gets a smooth chat upgrade; another gets broken setup screens and a new conversation thread they never asked for. Guess which one remembers the feature fondly?
There’s also the branding problem. iMessage sounds like a product. RCS sounds like something you had to read about in a support forum. That may sound cosmetic, but consumer messaging apps live or die on simplicity, and Google still has work to do if it wants people to choose RCS because it feels good rather than because it exists.
Third-party chat apps feel the pressure
If RCS becomes reliable across carriers and platforms, the pressure won’t stop with iMessage. WhatsApp and Telegram built their appeal partly on being the obvious fix for bad default texting. A stronger, encrypted, cross-platform system baked into phones could erode that advantage, especially in markets where people just want one messaging app to do the job without drama.
That doesn’t mean those apps disappear. Network effects are stubborn, and people rarely abandon a habit just because the alternative is better on paper. But RCS 4.0 is the first update in a while that makes the default messaging stack feel genuinely competitive instead of merely tolerated.
What happens next for RCS 4.0
The next phase is less about flashy features and more about boring discipline: carriers, Apple, and Google making the same thing work the same way everywhere. If they manage that, RCS could stop being the thing enthusiasts explain to relatives and become the thing everyone uses without thinking. If they don’t, it stays a promising standard trapped in the usual phone-company mess.