How to Do a Group Text: A Complete Guide for iPhone and Android

Group texting is one of those features almost everyone uses but few people fully understand — until something goes wrong. Messages sent to the wrong people, someone getting left out, replies flooding your phone from numbers you don't recognize. Here's how group texting actually works, and what affects your experience with it.

What Is a Group Text, Exactly?

A group text is a single message thread shared among three or more people. Instead of sending the same message individually to multiple contacts, everyone receives the message together — and (in most cases) can reply to the whole group.

That sounds simple, but there are actually two distinct technologies at work here, and which one your phone uses makes a significant difference.

SMS Group Texts vs. MMS Group Texts vs. Group iMessage 📱

SMS (Short Message Service)

Plain SMS wasn't designed for groups. When you send a group text over SMS, most carriers handle it as individual messages sent separately to each recipient. Replies come back only to you — not to the group. There's no true "thread." This is why some group messages feel like a one-way broadcast.

MMS (Multimedia Messaging Service)

MMS is the standard that actually enables real group conversations over cellular networks. When your phone sends a group message using MMS, everyone is added to a shared thread and can reply to the whole group. MMS also supports photos, videos, and audio. MMS must be enabled on your device for this to work — it's usually on by default, but it can be toggled off in settings.

iMessage (Apple Devices Only)

If everyone in the group uses an iPhone (or another Apple device with an Apple ID), your iPhone will automatically use iMessage instead of MMS. iMessage runs over Wi-Fi or mobile data, not the cellular SMS/MMS network. It supports features like reactions, replies, naming the group, adding or removing participants, and read receipts. The bubbles appear blue instead of green.

If even one person in the group uses Android or a non-Apple device, iMessage falls back to MMS for that thread — shown in green bubbles.

How to Start a Group Text on iPhone

1. Open the Messages app
2. Tap the compose icon (top right)
3. In the To: field, type the first contact's name and select them
4. Keep typing additional names to add more recipients
5. Type your message and tap Send

iPhone will automatically use iMessage if all recipients have it, or MMS if they don't. You don't choose — the app handles it based on what's available.

To name a group or add/remove people, tap the group name or icons at the top of the thread, then tap the info icon. Note: you can only add or remove participants in iMessage group chats, not MMS threads.

How to Start a Group Text on Android

The steps vary slightly by manufacturer and Android version, but the general process is:

1. Open your Messages app (Google Messages, Samsung Messages, etc.)
2. Tap the compose or new chat icon
3. Add multiple contacts in the recipient field
4. Type your message and send

Android uses MMS for group messaging by default. If everyone has a compatible RCS setup (more on that below), it may upgrade the experience automatically.

What Is RCS, and Does It Matter for Group Texts? 💬

RCS (Rich Communication Services) is the modern replacement for SMS/MMS that Google has pushed heavily on Android. It supports group chats, read receipts, typing indicators, high-quality media, and message reactions — similar to iMessage, but carrier- and platform-based.

For RCS group chats to work:

• All participants need to use an RCS-compatible app (Google Messages is the most common)
• All participants need to be on a carrier that supports RCS
• The feature needs to be enabled

Historically, iMessage and RCS didn't communicate with each other, which meant Android-to-iPhone group chats defaulted to MMS. Apple added RCS support in iOS 18, which changes the cross-platform picture somewhat — though the full rollout and feature parity between platforms is still evolving.

Factors That Change How Group Texting Works for You

Common Group Text Problems (and Why They Happen)

Replies going only to you, not the group: This usually means the thread is running over SMS instead of MMS, or MMS is disabled in your settings. Check under Settings → Messages (iPhone) or your messaging app's settings (Android).

Someone not seeing the group thread: If one participant's phone doesn't support MMS or has it disabled, they'll receive individual messages instead of being in the shared thread.

Group chat showing as separate conversations: Often caused by a mix of iMessage and non-iMessage contacts, or a carrier compatibility issue.

Can't add or remove people: This is only possible in iMessage threads. MMS group chats have a fixed participant list once created.

The Part That Depends on Your Situation

The mechanics of group texting are consistent — SMS, MMS, iMessage, and RCS each behave predictably. But whether your group chats work the way you expect depends on the specific combination of devices, carriers, app versions, and settings in your group. A group that's all iPhones on the latest iOS behaves very differently from a mixed Android-iPhone group on older software. The right setup for a family group chat looks different from a work team using different carriers across different countries.

Understanding how the technology works is the first step — but what actually matters is how those variables line up for the specific people you're messaging.