Android 4.0. 4 - 5.1
Open Messages and tap the Compose button . Enter the names or tap the Add button. to add people from your contacts. Type your message, then tap the Send button .
How to make a group chat on iPhone
Conversations can include up to 150 people.
Limit the number of people in a group. Apple's iMessage group text app for iPhones and iPads can accommodate up to 25 people, according to the Apple Tool Box blog, but Verizon customers can only add 20.
Open the Messages app. Tap the group text you want to exit. Tap the top header of the conversation, where the Messages profiles are. Tap Leave this Conversation.
You can create a group messaging conversation by turning on Group Messaging in your settings and then entering all contacts into your your text. As long as you and all recipients have Group Messaging enabled on your iPhones, everyone will be able to see all parts of the conversation.
The option you're looking for is located at Settings > Messages > Group Messaging . Turning this off will send all messages individually to their recipients. Note: Disabling MMS Messaging will remove the Group Messaging toggle from the list.
Enable the iPhone's Filter Unknown Senders setting to reduce the noise about potentially unwanted messages.
If you're using an iPhone, open the group message in question, tap the “i” icon in the upper-right-hand corner of the screen, and scroll down to the “Hide Alerts” switch. Flick that on, and you'll no longer be bothered by notifications for that group.
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