Green vs Blue Bubbles on iPhone, Explained — and Why Texts Turn Green

Q: Are green texts encrypted?

SMS/MMS are not end-to-end encrypted. Green RCS conversations may be: starting with iOS 26.5, Apple supports end-to-end encrypted RCS in beta with participating carriers, rolling out over time. Check for Encrypted and the lock icon at the top of the conversation; if that indicator is absent, do not assume RCS is protected from third parties reading it in transit. iMessage remains end-to-end encrypted.

Updated Sources linked 3 min read October 3, 2026 · by Ryan Bennett

You’re texting someone and the bubble shows up green instead of the usual blue — and you’re not sure what changed.

Why: The color tells you which service carried the message. Blue is iMessage, Apple’s own service that goes over Wi-Fi or cellular data and is end-to-end encrypted. Green is a standard text — SMS, MMS, or RCS — sent over your carrier’s network. A thread turning green almost always means iMessage couldn’t be used for that message.

What blue means

A blue bubble means the message went as iMessage. That requires both you and the recipient to be on Apple devices (iPhone, iPad, Mac) with iMessage turned on and a working data connection. iMessage adds read receipts, typing indicators, higher-quality photos, and end-to-end encryption.

What green means

A green bubble means the message went as a regular text — SMS/MMS, or RCS on supported carriers. SMS/MMS use carrier messaging; RCS can use Wi-Fi or cellular data instead of iMessage. SMS and MMS aren’t end-to-end encrypted. RCS can be end-to-end encrypted on iOS 26.5 and later, where every participant’s carrier supports it. An encrypted RCS conversation shows Encrypted with a lock icon at the top; green alone does not tell you its security level. According to Apple, a message shows green when any of these is true:

The person you’re texting doesn’t have an Apple device.
iMessage is turned off on your device or on theirs.
iMessage is temporarily unavailable on your device or theirs (for example, no data connection right now).

Fix 1: Confirm iMessage is turned on

If your messages to other iPhone users went blue before and are now green, check that iMessage is still on.

Go to Settings > Apps > Messages and make sure iMessage is on. (On older iOS: Settings > Messages.)
Tap Send & Receive and confirm your phone number and/or email are checked.
Make sure you have Wi-Fi or cellular data — iMessage can’t send without a data connection, so it falls back to green SMS.

Fix 2: Decide whether green is actually a problem

Green isn’t a malfunction by itself — it just means a standard text was used. It’s only worth fixing if a thread that used to be blue suddenly went green for an Apple-device contact. In that case the cause is one of the three reasons above (iMessage off on either side, or no data connection). If the recipient simply uses an Android phone, green is expected and there’s nothing to fix.

FAQ

Does a green bubble cost me money? Possibly — SMS/MMS may count against your carrier’s texting allowance, while iMessage uses data. Check your plan if you’re unsure.

Why did one contact turn from blue to green? They likely switched to a non-Apple phone, turned off iMessage, or one of you currently has no data connection.

Are green texts encrypted? SMS/MMS are not end-to-end encrypted. Green RCS conversations may be: starting with iOS 26.5, Apple supports end-to-end encrypted RCS in beta with participating carriers, rolling out over time. Check for Encrypted and the lock icon at the top of the conversation; if that indicator is absent, do not assume RCS is protected from third parties reading it in transit. iMessage remains end-to-end encrypted.

Sources: Apple Support — If your iPhone messages are green, Apple Support — iMessage, RCS, and SMS/MMS differences