Sharing pictures is always a fun way to use your phone, so thank you for sharing those helpful details with us. There's a lot more that we'd need to know about this, so let's get to it. Are these pixelated pictures coming from all iPhone users, or just specific people? Do they show up like that on the iPhone side? Do you know how they are sending the pictures to you, such as by sending a previously saved picture, or taking a picture with the camera and sending it to you that way?