Notification reminder is only available in Samsung Android smartphone.samsung galaxy s6
http://gadgetguideonline.com/s7/sasmung-galaxy-s7-how-to-guides/how-to-use-notification-reminder-in-galaxy-s7-and-s7-edge/will this s7 solution work for samsung galaxy s6?
On your device’s Settings, go to Accessibility > Notification reminder. Select ON for repeat timer.I now have a quiet vibration every 1 minute
You need an alarm clock app like the one below.
https://play.google.com/store/apps/details?id=droom.sleepIfUCan
On your device’s Settings, go to Accessibility > Notification reminder. Select ON for repeat timer.