Dexcom ONE+ CGM System
Using your Dexcom ONE+ CGM System
What is optional calibration?
Calibrating your Dexcom ONE+ is optional. The Dexcom ONE+ and systems are designed to work properly without calibrations.
Are there any iPhone/iOS settings I should or shouldn’t use with my Dexcom ONE+ app?
Here are some recommended settings for iPhone devices, to help ensure you get all Dexcom ONE+ app alerts and sensor readings.
Are there any Android/OS settings I should or shouldn’t use with my Dexcom ONE+ app?
Here are some recommended settings for Android devices, to help ensure you get all Dexcom ONE+ app alerts and sensor readings.
How do I share my glucose data with the Apple Health app?
Apple Health consolidates health data from your smartphone, smartwatch, and third party apps, including Dexcom ONE+.
Setting up your DexcomONE+ CGM System
Where do I insert my Dexcom ONE+ sensor?
All Dexcom ONE+ users can insert their sensors on their abdomen or the back of their upper arms.
Troubleshooting your DexcomONE+ CGM System
What does the Signal Loss alert mean?
Your display device may be too far from your sensor or there may be something, such as a wall or water, between your sensor and your display device.
Android™ 15 is compatible, but I am still experiencing Signal Loss.
If you are experiencing Signal Loss after pairing a sensor you may not have the latest version of Android 15.
Replacing your DexcomONE+ sensor
How do I replace my sensor and start a new sensor session?
Each sensor session lasts up to 10 days with a 12-hour grace period at the end. The grace period gives you more time to replace your sensor, so you can do it when it's convenient for you.