Need phone support? Request a callback. Visit our improved Help page for answers to frequent questions

Step 4 - Using Dexcom CGM in the long run
How to replace your transmitter
Managing your sensor adhesion

Everyone’s skin is different. Extra care may help you keep your sensor on for the entire sensor session. Here are tips some Dexcom customers have used successfully.

Recommended phone settings

Some smartphone settings can interfere with your Dexcom ONE app. Check our recommended settings to know which ones you should or shouldn’t use.