Tap the "Unblock" button next to their name.

Click on the Settings (gear icon) in the top-right corner of the Chat interface.

✅ The person is now unblocked and can message you again. Method 3: Unblock via Google Contacts (Alternative Method) Blocking in Chat also adds the person to your master Google Contacts block list. You can remove them from there as well.

✅ You can now search for the person in the Chat search bar and start a new conversation. Method 2: Unblock from Google Chat Mobile App (Android & iOS) The steps are nearly identical for both Android and iPhone.

Click the "Unblock" button (or the "X" / trash icon) next to their name.

Click "Unblock" again to confirm.

Hover over the person you want to unblock. Click the three vertical dots (menu) that appear.

Tap "Unblock" again in the confirmation window.