Group texts not received on iphone

Why do I receive group texts on my iPad, but not on my iPhone 6s?

Tis might sound a bit stupid however make sure "imessage" is on and that however is sending the message is using the correct contact information. You can check under messages> send and receive

The contact info is the same for both my iphone and ipad. I receive them on my ipad, but not on the phone. Have