Dexcom recalls G7 CGM iOS app versions 2.8.0 and earlier that may not alert users of sensor failures, risking missed glucose events. Affected users should update to latest software.
The affected devices are the Dexcom G7 Continuous Glucose Monitoring System (CGM System) using iOS, watchOS and Android App software (versions 2.8.0 or earlier) and Dexcom ONE+ CGM System using iOS and Android App software (versions 1.4.0 or earlier), henceforth referred to as the App . The affected App does not provide an expected "Sensor Failed" alert when the transmitter sends a "transmitterFailed" error message to the App when the CGM experiences a hardware or firmware failure. Instead, the App ends the CGM sensor session, stops reporting glucose values and displays the Start Sensor screen or No active sensor message without alerting the user, which can lead to missed detection of a hyperglycemic or hypoglycemic event and a delay in treatment.
Dexcom is recalling older versions of its G7 CGM iOS app that don't properly warn users when the glucose sensor fails. This could lead to missing critical high or low blood sugar events without timely treatment.
The older app versions fail to show a 'Sensor Failed' alert when the transmitter encounters hardware or firmware issues. Instead, the app stops reporting glucose values and shows a 'Start Sensor' screen, which can delay treatment for dangerous blood sugar events.
People using Dexcom G7 CGM systems with iOS or Android apps running versions 2.8.0 or earlier (for G7) or 1.4.0 or earlier (for Dexcom ONE+) are affected. Those with diabetes who rely on continuous glucose monitoring are most at risk.
Check if your Dexcom G7 CGM system has the iOS or Android app version 2.8.0 or earlier. The model number SW12300 with lot code UDI: SW12300 - 00386270001863 is affected.
Download the latest app version from Dexcom's official website or app store to fix the sensor alert issue.
No, the recall does not require stopping use. Updating the app software resolves the issue.
The app stops reporting glucose values and shows a 'Start Sensor' screen instead of warning about a failed sensor, which could delay treatment for high or low blood sugar events.
The recall states that the issue could lead to missed detection of hyperglycemic or hypoglycemic events, but it does not specify a risk of serious injury in normal use.
We’ve drafted a message you can send Dexcom to request your refund or repair — edit it as you like.
Subject: Recall Z-2447-2025 — Dexcom Dexcom Hello, I own a Dexcom that is covered by recall Z-2447-2025 from Dexcom. I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this? Thank you.
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The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
