Dexcom CGM Explained
Start with Confidence: Support for Your First Days with Dexcom
Published: Aug. 26, 2026
Updated: Sep. 10, 2026
3 min read
At Dexcom, your success matters to us from your very first day, because a strong start sets you up for everything that follows. The Dexcom Start with Confidence promise helps you feel supported and confident during onboarding and throughout your journey with Dexcom G7 or G7 15 Day. It connects you to education, 24/7 Tech Support, and CGM sensor replacement when something isn’t working as it should — so you know what to expect and where to get help. If something doesn’t feel right, Dexcom is here to help you understand it and work through it together.
Whether you’re new to CGM, transitioning from another system, or getting familiar with a new Dexcom CGM system, it’s normal to have questions as you get started. No matter where you are in your diabetes journey, Dexcom is here to help make those first steps feel clearer, easier, and more supported.
Your Starting Point: The Dexcom Welcome Center
Beyond the Dexcom CGM User Guide, the Dexcom Welcome Center serves as your one-stop destination for onboarding support. It brings together getting-started resources, training videos, FAQs, and educational content to help you confidently learn the basics of your Dexcom G7 or Dexcom G7 15 Day system at your own pace.
You can find support for common first steps like setting up your Dexcom G7 app* or receiver, inserting your sensor, understanding alerts, and getting more familiar with your glucose information.
You can also explore additional features that may support your experience over time, including Dexcom Follow app† and Share feature, along with compatible digital health apps, and insulin pumps‡.
If something doesn't feel right, you don't have to work through it alone. The Dexcom Technical Support team is available 24/7 by phone at 844-607-8398 to help review your situation, explain what's happening, guide you through next steps, and, when appropriate, assist with sensor replacement. It's all part of the Dexcom Start with Confidence promise—helping ensure you know where to turn and what to expect whenever you need support.
Think of the Welcome Center as a simple first stop when you want to understand what to expect, where to begin, or what to explore next.
Learn with Dexcom CARE
If you’d like extra guidance, Dexcom CARE offers free, expert-led virtual classes to help you feel more confident using Dexcom G7 or Dexcom G7 15 Day. Sessions cover topics like G7 app* setup, receiver setup, alerts, trend arrows, sensor changes, and understanding your CGM data.
Dexcom CARE can be especially helpful if you want to learn directly from educators, ask questions, or revisit the basics in a supportive setting. It’s another way Dexcom helps you build confidence step by step, whether you’re just getting started or looking for a refresher.
Find Answers When You Need Them
For quick answers, the Dexcom Help Center lets you browse FAQs, search common topics, and access product information on your own schedule. It’s a useful resource when you want to troubleshoot, learn more about a feature, or find guidance without needing to contact support right away.
My Dexcom Account also gives you one place to manage parts of your support experience, including tracking shipments, managing your profile, chatting with support, requesting extra overpatches, and submitting product support requests.
We’re Here to Help You Start Strong
Starting something new can feel like a lot, but you don’t have to learn everything at once. Dexcom is here to help you take those first steps with support, education, and clear places to turn when you need help.
Explore the resources below to get started:
Get started on Dexcom G7
If you are living with diabetes and not using CGM, talk to your doctor about Dexcom G7. We can help you get started with a free benefits check. Click the button below to send us some basic information.
*Compatible smart devices sold separately. To view a list of compatible devices, visit https://www.dexcom.com/compatibility †Separate Dexcom Follow app and internet connection required. Internet connectivity required for data sharing. Users should always confirm readings on the Dexcom G7 app or receiver before making treatment decisions. ‡To learn more about insulin pump integrations and compatibility with Dexcom CGM Systems, visit dexcom.com/integrate.