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Using Dexcom ONE in the Long Run

What are the best practices to minimize signal loss on my phone?

Last Updated · November 3, 2022

Review the following information to make sure that you continue to receive CGM values when using a compatible smart device *:

  • Bluetooth connections
    Keep Bluetooth pairings in your phone to a minimum. When you finish using a Dexcom transmitter, make sure to unpair it from your Bluetooth. If you have several old transmitters paired in Bluetooth, those simultaneous pairings can cause connection issues. (Note) Dexcom ONE transmitters only connect, send data, and disconnect every 5 minutes. The pairing in Bluetooth will say “not connected” and is expected.
  • Multiple running apps
    The Dexcom ONE app should never be closed. Keep any additional running apps to a minimum in the background. High-intensity apps, like mobile games or video sites, draw large amounts of processing power and may cause signal loss.
  • Keep your phone charged
    If your phone goes into low power mode, that will turn off Bluetooth and cause connection issues with the Dexcom ONE app and transmitter.

*To view a list of compatible smart devices, visit

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