Tynix

Why reminders don’t go off

A reminder that doesn’t go off is almost never the app forgetting. Usually a phone setting silenced it, or a battery saver stopped the app. Here is what to check, phone by phone.

In Tynix: open Settings → Reminder Health Check. It checks what it can on your phone, says what changed, and takes you to the right setting.

iPhone

  • Notifications are off, or quiet. Settings → Notifications → the app: turn on Allow Notifications, and pick Lock Screen and Banners.
  • A Focus is on. Do Not Disturb, Sleep or Work silence apps that aren’t on their allowed list. Settings → Focus → the Focus → Apps.
  • Scheduled Summary. If the app is in your summary, its notifications wait until the summary time. Settings → Notifications → Scheduled Summary.
  • The ring switch is on silent. The banner still shows, but there’s no sound.
  • Too many reminders waiting. iOS keeps at most 64 scheduled notifications per app. An app that schedules more must keep the nearest ones in that window.

Every Android phone

  • Notifications are off. Android 13 and later ask first. Settings → Apps → the app → Notifications.
  • Alarms & reminders is off. On Android 12 and later, an app needs this to go off at the exact minute. Settings → Apps → Special app access → Alarms & reminders.
  • Battery optimisation. Settings → Apps → the app → Battery: choose Unrestricted (or “Don’t optimise”).

Menu names differ between versions; search Settings for the words in bold.

Samsung (One UI)

  • Settings → Battery → Background usage limits. Take the app out of Sleeping apps and Deep sleeping apps, and add it to Never sleeping apps.
  • Turn off Put unused apps to sleep on the same screen, or Samsung may add the app back later.

Xiaomi, Redmi and POCO (HyperOS, MIUI)

  • Settings → Apps → Manage apps → the app: turn on Autostart.
  • On the same screen, Battery saver → No restrictions.

OnePlus, OPPO and realme (OxygenOS, ColorOS, realme UI)

  • Settings → Apps → the app → Battery usage: turn on Allow background activity (and Allow auto launch where it’s offered).
  • Settings → Battery → Advanced: turn off any “optimise” or “sleep standby” setting for the app.

Google Pixel

  • Settings → Apps → the app → App battery usage → Unrestricted.
  • Adaptive Battery rarely stops reminders, but if it does, the setting above takes the app out of it.

After a phone update

Updates sometimes reset these settings or turn battery savers back on. If reminders stop after an update, go through the list for your phone again.