The basic steps differ by phone type and messaging app
Adding someone to a group text on iPhone, Android, or a messaging app takes different steps depending on what you're using. On iPhone, you open the conversation, tap "Details" at the top, then tap the plus sign to add a contact. On Android with the default Messages app, you tap the group name at the top, then tap "Add person" or the plus icon. In third-party apps like WhatsApp, Telegram, or Signal, you usually tap the group name, find an "Add member" or "Add participant" option, and select the person from your contacts.
The person you add will see the full message history from that point forward in most apps, though some apps let you hide earlier messages from new members. Once added, they can send and receive messages just like everyone else in the group.
Key Takeaways
- iPhone requires you to open the conversation, tap Details, and use the plus sign to add members to an existing group text.
- Android's default Messages app has you tap the group name at the top and select "Add person" from the menu.
- WhatsApp, Telegram, Signal, and other third-party apps have an "Add member" button in the group info screen, usually accessible by tapping the group name.
- New members typically see all future messages and the recent message history, though some apps let group admins control what they see.
- You need the person's phone number or contact information already saved to add them to most group texts.
Adding someone on iPhone
Open the group text conversation you want to add someone to. Look at the top of the screen where you see the group name or the names of the people in the chat. Tap the word "Details" in the top right corner, or if you see a group photo or icon, tap that instead.
Once the Details screen opens, scroll down until you see a plus sign (+) next to "Add Contact" or just a plus icon by itself. Tap it. Your contacts list will appear. Find the person you want to add and tap their name. They will now be part of the group text, and you'll see their name added to the member list on the Details screen.
If you don't see the plus sign, the conversation may not be set up as a true group text — it might be a one-on-one conversation that looks like a group. In that case, you'll need to start a new group text with everyone you want included.
Adding someone on Android
Open the group text conversation in your default Messages app (usually called "Messages" or "Android Messages"). Tap the group name or the names of the participants shown at the very top of the screen. This opens the group details or group info screen.
Look for a button or option that says "Add person," "Add member," "Add contact," or shows a plus sign (+). Tap it. Your contacts will appear. Select the person you want to add. They will be added to the group when ready, and the group member list will update to show their name.
If you're using a different texting app on Android (like Google Messages, Samsung Messages, or another third-party app), the steps may vary slightly, but the general process is the same: open the group, find the group info or details screen, and look for an add option.
Adding someone in WhatsApp, Telegram, or Signal
Open the group chat in WhatsApp, Telegram, or Signal. Tap the group name at the top of the screen. This takes you to the group info page where you see all the members listed.
In WhatsApp, look for "Add participant" or a plus icon. In Telegram, tap "Add Member" or the plus sign. In Signal, tap "Add members" or look for a plus icon. Select the contact you want to add from your phone's contact list. Some apps let you add multiple people at once; others require you to add them one at a time.
Once added, the new member will see all messages sent after they join. In WhatsApp and Signal, group admins can choose whether new members see the chat history. In Telegram, new members always see the full history by default, though admins can change this setting for the entire group.
What happens when you add someone to an existing group
The person you add will receive a notification that they've been added to the group. On iPhone and Android, they'll see the group text appear in their messages. In WhatsApp, Telegram, and Signal, they'll get a notification and the group will appear in their chat list.
New members can usually see messages sent after they join. On iPhone and Android, they typically see some recent message history as well. In WhatsApp and Signal, the group admin controls whether new members see old messages. In Telegram, new members see the full history unless the admin has disabled this.
The new member's name will appear in the group member list, and they can start sending messages right away. They can also see who else is in the group and, depending on the app's privacy settings, may be able to see when other members were last active.
Troubleshooting: Why you might not be able to add someone
If you can't find the add option, check that you're looking at a group text, not a one-on-one conversation. Group texts have multiple names at the top; one-on-one texts show only one person's name. If it's a one-on-one text, you'll need to start a new group conversation instead.
If the person's name doesn't appear in your contacts when you try to add them, make sure their contact is saved to your phone. Go to your Contacts app, search for their name, and add them if they're missing. Then return to the group text and try adding them again.
In some cases, if you're not the group admin or creator, you may not have permission to add members. This is more common in WhatsApp, Telegram, and Signal, where group admins can restrict who can add new members. Ask the group admin to add the person instead, or ask them to change the group settings to allow all members to add people.
Removing someone from a group text
If you need to remove someone, the process is similar to adding them. On iPhone, open Details, find the person's name in the member list, tap "Edit" or swipe left on their name, and select "Remove." On Android, open the group info, find the person, and tap the minus sign or "Remove" option next to their name.
In WhatsApp, Telegram, and Signal, open the group info, find the member you want to remove, tap their name or profile, and select "Remove from group" or a similar option. Only group admins can remove members in most cases. Once removed, the person will no longer receive messages from the group, though they may still see the group in their chat history.
Frequently Asked Questions
Can I add someone to a group text if they don't have an iPhone or Android?
If you're using standard SMS group texts, yes — they work on any phone that can receive text messages. If you're using WhatsApp, Telegram, Signal, or another app, the person must have that app installed on their phone. You can't add someone to a WhatsApp group if they don't have WhatsApp, for example.
Will the new person see all the old messages in the group?
On iPhone and Android, new members usually see recent messages and the full history going forward. In WhatsApp and Signal, the group admin controls this — they can set it so new members see no history, recent history, or full history. In Telegram, new members see the full history by default unless the admin changes the group settings.
What if someone doesn't want to be added to a group text?
Once added, they can leave the group themselves by opening the group info and selecting "Leave group" or "Exit." On iPhone and Android, they can also mute notifications so they don't see alerts from the group. In WhatsApp, Telegram, and Signal, they can mute the group or delete it from their chat list without actually leaving.
Can I add someone if I don't have their phone number saved?
No — you need their contact information saved in your phone's Contacts app first. Add them to your contacts with their phone number or, in apps like WhatsApp and Telegram, their username. Then you can add them to the group.
Do I need to be the group creator to add someone?
On iPhone and Android, usually anyone in the group can add members. In WhatsApp, Telegram, and Signal, only group admins can add members by default, though admins can change this setting to allow all members to add people. If you can't add someone, ask the group admin to do it or to change the permissions.