First-Time Setup

System Overview

Do I need to use my receiver?

You have the option to use only the app, only the receiver, or both at the same time.
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Sensor and Transmitter

How do I replace the Dexcom G6 transmitter?

Find a step-by-step guide showing how to remove and replace your Dexcom G6 transmitter.

Can the sensor be restarted after 10 days?

No. The new Dexcom G6 CGM system is designed to eliminate the need for fingerstick calibrations* and can be used for 10 days without restart.

How to Keep Dexcom G6 Sensor on for Full 10-day Wear?

Follow these placement and adhesive overpatch tips to keep your Dexcom G6 sensor on longer for the full 10-day wear.

How long does the Dexcom G6 transmitter last?

The Dexcom G6 transmitter lasts for up to a total of three months (90 days). Find more information here:

Setting Up Your Smartphone or Receiver

Is there a Quick Glance widget for the G6?

By default, the Quick Glance option is on. It shows your CGM information in the notification area and on the lock screen.

What are the recommended phone settings for the Dexcom G6 app?

Choose the phone you’re using

How do I set up the Dexcom G6 with my phone?

The Dexcom G6 app is available for free from the Apple App or Google Play stores. The app is named "Dexcom G6".

Dexcom G6 App

What are the recommended G6 iPhone settings?

Your phone settings can prevent the Dexcom G6 app from working. Learn more about the settings that will allow your app to work as expected.

Why is my trend arrow missing?

When there is no arrow, it means more glucose readings are needed to establish your trend.

What are the recommended G6 Android phone settings?

Your phone settings can prevent the Dexcom G6 app from working. Learn more about the settings that will allow your app to work on your Android device as expected.

How to Customize Dexcom G6 Alarm & Alert Settings

Learn the steps to customize your Dexcom G6 low alarm sounds and alert settings through your continuous glucose monitor receiver or in the Dexcom app.

Follow App

What is the Dexcom Follow app for diabetes?

The Dexcom Follow app is a free CGM phone app that allows friends and family to remotely monitor a Dexcom G6 user's trending glucose levels.

How does Dexcom Share and the Dexcom Follow app work with family and friends?

The Share feature is built in to the Dexcom G6 CGM app and allows you to share glucose data with up to five people.

How to Share Dexcom G6 with Family, Friends, & Followers?

To set up Dexcom Share, press the Share icon in the app and follow the on-screen instructions to start sharing your G6 glucose data with family, friends, and followers.


How do I share my glucose data with my clinic or doctor?

Share glucose data from your Dexcom G6 CGM with your doctor or clinic with the Dexcom Clarity app. Learn more.

Need Additional Help?

Dexcom users getting technical support from dexcom representatives

Technical Support

Dexcom CGM product troubleshooting and Clarity software support
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Dexcom users getting onboarding support from Dexcom Care team

Dexcom Care

Training & support for new Dexcom users

Our experts are here to help.

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