do reminders on iphone make a noise?
Ensure that 'Sounds' is enabled under 'Reminders' and 'Timers' in Due > Settings > Alerts & Badges. In iOS > Settings > Notifications > Due, ensure that 'Allow Notifications' and 'Sounds' are enabled. ... Apart from Apple's built-in Clock app, no other app can make any alert sound when your device is put on silent.