We can definitely take a closer look into why you're having these issues with group messaging. If you have an iPhone, please follow these steps to restore group text functionality:
Tap Settings > Scroll down and tap Messages > Scroll down to SMS/ MMS
and disable the feature.
Go back to Settings > Tap on General > Scroll down and tap Reset > Select Reset Network Settings > Enter your pass-code> Tap Restart Network Settings
Turn Messaging back on by performing the step in step 1, go back the messages. You will see MMS Messaging. Enable text messaging by sliding the button to the right. You may need to turn your phone off and back on to restore text functionality.
If you have an Android, please verify that the settings allow you to group message. Make sure they are enabled by:
Open Messages>Tap on the 3 dots> Settings> More Settings> Multimedia Messages> Verify group conversations is enabled. In some instances, you need to perform a combination of the above and a Network Reset. If you are using a 3rd party app to troubleshoot, disable it and test from the default messaging app. this will help determine where the issue lies.
Let us know if this helps.
Sean, AT&T Community Specialist
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