I am hard of hearing so I miss messages. I use a customized "sound" ported over from my S4 running Android 4. It works fine on my S7. However, I want it to remind me every 5 minutes if I don't acknowledge it. With my S4, it repeated the same "sound" after 5 minutes. With the S7 running Android 7, it doesn't use the same sound but instead uses some impossible-to hear default sound. How can I make the S7 use the same sound for reminders?