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Your First 10 Days with Dexcom ONE

What does the Signal Loss alert mean?

Last Updated · November 3, 2022

This alert tells you when you’re not getting Dexcom ONE readings. Your display device may be too far from your transmitter or there may be something, such as a wall or water, between your transmitter and your display device.

To fix this:

  • Keep your transmitter and display device within 20 feet of each other. Wait 30 minutes.
  • Never close the Dexcom ONE app. The app is intended to run at all times.
  • If that doesn’t work, turn Bluetooth off and on. Wait 10 minutes.
  • If that doesn't work, restart the smart device and reopen the Dexcom ONE app.
  • Close background apps.
  • Make sure your phone is charging/charged. Low power mode on smartphones will turn off Bluetooth.

During signal loss, use your meter to check your glucose levels and make any treatment decisions.

When the display device and transmitter connect after a signal loss or similar issue, up to 3 hours of missed Dexcom ONE readings can fill in on the graph.

Apple: Unlike other alerts, the Signal Loss alert can’t make a sound or vibrate if your smart device is silenced or in Do Not Disturb mode.

5-step learning journey

Discover education resources, organised in a 5-step journey, to learn key information about your Dexcom ONE CGM system, from getting started, your first 10 days, to using Dexcom ONE in the long run.

Step 1: The basics of CGM
Step 2: Getting started
Step 3: Your first 10 days
Step 4: Using Dexcom ONE in the long run
Step 5: Understand your Diabetes trends