I just recently upgraded to the Samsung s7 from the s4. On the s4 I could set custom notification sounds for each contact. So when they texted me, I knew who it was without having to look. It worked for both individual messages and group messages. However, on the s7, I set the custom notification sounds for my contacts, but with group messages, all of them are the default text tone. How do I get it to play the individual text tones in a group message?