CGM features and fixes · Medtronic Simplera

Medtronic Simplera alarms not sounding

The Simplera app sends no alerts if notifications or Critical Alerts are off, if the app is force-closed, if Bluetooth is off, or if Screen Time Downtime or Android Digital Wellbeing blocks it. Power saving can delay alerts. (Medtronic user guide, p. 15; Medtronic user guide, p. 14)

What the maker says to do

1. Allow Notifications and Critical Alerts (iPhone) or Do Not Disturb permission (Android) for the Simplera app.
2. Keep Bluetooth on, even in airplane mode.
3. Do not force close the app, and open it again after the phone restarts.
4. Turn off Screen Time Downtime (iPhone) or the Digital Wellbeing app timer (Android) for the app.
5. On iPhone, turn on Vibrate on silent.

Simplera (standalone) sends readings to the Simplera app on a phone; Simplera Sync pairs with the MiniMed 780G pump, and the MiniMed Mobile app is a secondary display for the pump.

More on the Medtronic Simplera

• Follower app not updating
• Signal loss
• Sensor error
• Warm-up
• Sensor failed early
• Follower not getting alerts
• Compatible phones

Alarms not sounding on other CGMs

• Dexcom G6
• Dexcom G7
• Dexcom ONE+
• Dexcom Stelo
• FreeStyle Libre 2 and 2 Plus
• FreeStyle Libre 3 and 3 Plus
• Medtrum TouchCare Nano CGM
• Eversense 365
• SIBIONICS GS1

Sources, quoted

• Medtronic user guide, p. 15: “Allow Critical Alerts and Notifications for the Simplera app.”
• Medtronic user guide, p. 15: “Notifications are turned off, the app will not send any alerts, including Urgent Low Alert.”
• Medtronic user guide, p. 15: “If Do Not Disturb Permissions or Notifications are turned off, the app will not send any alerts, including Urgent Low Alert.”
• Medtronic user guide, p. 14: “Make sure Bluetooth is on, even if the mobile device is in airplane mode.”
• Medtronic user guide, p. 14: “Do not force close the Simplera app. If the app is closed, the app will not send sensor glucose information or alerts.”
• Medtronic user guide, p. 14: “Always make sure to open the app after the mobile device restarts to ensure the app sends sensor glucose alerts.”
• Medtronic user guide, p. 14: “When power saving settings are enabled, the mobile device may delay the alerts and notifications from the Simplera app.”
• Medtronic user guide, p. 15: “If this setting is enabled, the Simplera app will be prevented from sending alerts.”
• Medtronic user guide, p. 15: “If the app timer is set in the Digital Wellbeing feature for the Simplera app, the app will shut down and will not send any sensor glucose alerts when the timer expires.”
• Medtronic user guide, p. 15: “Vibrate on silent must be turned on in the iOS phone settings or the alerts, including Urgent Low, will not vibrate during Mute alerts.”

Every quote is checked against its source page before each update of this site; last checked 2026-10-06. Makers change their apps; the source page is the authority when it differs.