Setting Up Your Dexcom ONE System
System Overview
What are the Dexcom ONE system components?
The Dexcom ONE CGM system requires, Dexcom ONE sensors, Dexcom ONE transmitters and a compatible smart device*
Inserting and Starting Your Sensor and Transmitter
How do I replace my sensor and start a new sensor session?
There are two ways to end your sensor session and start a new one.
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. People ages 2 to 17 years old can also choose their upper buttocks. Look for a place on your belly, back of upper arms, or upper buttocks where you have some padding.
How do I insert my Dexcom ONE sensor?
Dexcom designed the Dexcom ONE CGM system sensor auto-applicator for easier, more consistent sensor insertions. We recommend viewing the following video for a helpful demonstration of the sensor insertion and transmitter attachment process.
Using the Dexcom CGM App
How do I set up and use Dexcom ONE alerts?
Dexcom ONE gives you the option of turning on alerts when you set up your system. You just follow the prompts on your screen. If you want to turn on or change your alerts after setup, go to Settings > Alerts.
Setting Up Your Smartphone or Receiver
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. Visit Dexcom.com/compatibility for a list of devices and operating systems compatible with the Dexcom ONE app.