Dexcom G7 and ONE+ iOS Apps Safety Alert: Mandatory Update by April 30, 2026
Summary
ANSM has issued a binding safety alert requiring patients using Dexcom G7 iOS, G7 Watch iOS, and Dexcom ONE+ iOS apps to update to the latest software version by April 30, 2026, or the applications will cease to function. The alert (Reference R2609347) addresses a software error that can delay blood glucose alarms and alerts, potentially leading to undetected hyperglycemia or hypoglycemia. As of early April 2026, no incidents had been reported in France. Patients directly notified by the manufacturer must follow the provided instructions to mitigate the risk of delayed glucose alarms.
“Cette mise à jour doit être faite au plus tard le 30 avril 2026.”
About this source
ANSM is France's national medicines and medical devices safety agency. Its safety information page publishes drug recalls, medical device field safety notices, batch withdrawals, and benefit-risk reassessments for products on the French market. Around 100 alerts a month, written in French. Many of the affected products are also sold across the EU and UK, so an ANSM recall often previews a wider regulatory response from the EMA, MHRA, BfArM, or AIFA in the days that follow. Watch this if you manufacture or distribute medical devices in Europe, run a hospital pharmacy network, or track post-market safety signals across the European market. Recent recalls include Monnal T60 ventilators, Murex HBsAg reagents, and Arrow Teleflex hemodialysis catheters.
What changed
ANSM has issued a mandatory software update requirement for Dexcom G7 iOS, G7 Watch iOS, and Dexcom ONE+ iOS applications due to a software error that can delay blood glucose alarms and alerts. Affected patients must update to the latest version by April 30, 2026, after which older application versions will become non-functional. The manufacturer is directly notifying affected patients through in-app notifications and written correspondence.\n\nPatients who have not updated their applications after April 30, 2026 will need to perform the update before they can resume use. The software defect creates a risk of delayed alarms that could lead to undetected hyperglycemia or hypoglycemia events. Healthcare providers treating patients using these specific Dexcom iOS applications should confirm their patients have received and acted on the manufacturer's notifications.
What to do next
- Patients directly notified by Dexcom Inc. must update their application to the latest version via notifications received in the app or by following the manufacturer's letter instructions.
- After April 30, 2026, versions 2.11.2 and earlier (Dexcom G7 iOS/G7 Watch iOS) and versions 1.6 and earlier (Dexcom ONE+ iOS) will no longer be usable.
Archived snapshot
Apr 23, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Information n° R2609347 destinée aux patients utilisateurs Cette action de sécurité est enregistrée à l’ANSM sous le n° R2609347. Pour toute question, merci de vous adresser directement à l’émetteur de l’action de sécurité.
L'ANSM a été informée par la société Dexcom Inc de l’obligation pour les patients utilisateurs de certains appareils de mesure en continu de la glycémie, de mettre à jour l’application présente sur leur smartphone.
Cette mise à jour obligatoire concerne les applications des récepteurs Dexcom G7 iOS/G7 Watch iOS et Dexcom ONE+ iOS.
En effet, une erreur logicielle a été identifiée dans ces applications, pouvant entrainer un risque de retardement des alarmes/alertes de glycémie dont les conséquences peuvent conduire à des hyperglycémies ou hypoglycémies non détectées.
Les patients concernés sont directement informés par le fabricant qu’ils doivent mettre à jour leur application sur leur smartphone à la version la plus récente, par le biais de notifications reçues dans l’application et par un courrier du fabricant (ci-dessous).
Cette mise à jour doit être faite au plus tard le 30 avril 2026.
Après cette date, les versions 2.11.2 et antérieures pour l’application Dexcom G7 iOS/G7 Watch iOS, et les versions 1.6 et antérieures pour l’application Dexcom ONE+ iOS, ne pourront plus être utilisées. Les patients n’ayant pas mis à jour leur application devront effectuer cette mise à jour pour pouvoir de nouveau l’utiliser.
Début avril 2026, le fabricant n’avait pas reçu de signalement en lien avec ce problème en France. Téléchargez le courrier de la société Dexcom pour les utilisateurs de l’application Dexcom ONE + (23/04/2026) Téléchargez le courrier de la société Dexcom pour les utilisateurs de l’application Dexcom G7 (23/04/2026)
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