Dexcom G7 User Manual page 75

Internet Requirements
You need secure Wi-Fi or cellular internet access for:
Setup: Internet is required to download the app and create and/or login to your
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account
Sharing data: To smoothly share data with Dexcom Follow or Dexcom Clarity,
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you need a steady internet connection
Some app help features: A few app help features use the internet, including
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videos, FAQs, and app technical support
Internet connections lost without warning, failure to establish internet connections, or
the degradation of service prevent those features from working.
While you don't need Wi-Fi or cellular internet access to pair your sensor, get readings
and alerts, or use other features not listed above, you do need Bluetooth.
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