A new version of the Dexcom ONE app will be released soon. After the update, your low and high alert settings will be reset. Click here for more information

Dexcom ONE Mobile App

What happens after I have completed the app update?

Last Updated · March 18, 2022

After the update, your low and high alert settings will be reset to the following default alert settings: 

  • Low set to 3.9 mmol/L (Sound of ‘Low (Default)’ )
  • High set to 13.9 mmol/L (Sound of ‘High (Default)’ )

    • If you were not using Default alert settings and had customized your alerts in the app, these will be reset to default.


    You will need to go to your Dexcom ONE app ‘Settings -> ‘Alerts’ and reset your values for alerts.


    For full details of the changes see:‘How the app update will affect my Dexcom ONE app?’

    Related Questions

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    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