For millions of people with diabetes, continuous glucose monitors (CGMs) like Dexcom and Freestyle Libre are lifelines. These devices provide real-time blood sugar readings, alert users to dangerous highs or lows, and help manage a condition that requires constant vigilance. But what happens when a routine smartphone update suddenly cuts off access to this critical data?
A growing number of users are reporting that updating to Android 14 or the upcoming Android 15 has disrupted their CGM connectivity, leaving them in the dark about their glucose levels. The issue has sparked outrage in diabetes communities, with many calling on Google and device manufacturers to take immediate action.
A Fatal Disconnect
CGMs rely on Bluetooth to transmit data to companion apps on smartphones. For years, this connection has been seamless—until recent Android updates began breaking it. On Reddit, users of Dexcom G6 and G7 as well as Freestyle Libre 2 and 3 report that after updating, their apps either crash frequently or fail to receive readings altogether.
One Dexcom user posted:
"I updated to Android 14, and now my Dexcom app won’t stay connected. I’ve missed multiple hypoglycemia alerts—this is dangerous." (Source: r/dexcom)
Similarly, a Freestyle Libre user shared:
"After the update, my Libre 3 stops syncing randomly. I had no idea my sugar was dropping until I felt dizzy." (Source: r/Freestylelibre)
Why Is This Happening?
Experts suggest the issue stems from changes in Bluetooth stack management and battery optimization features in newer Android versions. Aggressive background app restrictions may prevent CGMs from maintaining a stable connection. While manufacturers like Dexcom and Abbott (Freestyle Libre’s parent company) have released patches, many users say fixes are slow or ineffective.
Google has yet to publicly address the problem, despite multiple complaints. This silence frustrates users who rely on these devices to avoid life-threatening situations.
What Can Users Do?
For now, the best advice is:
- Delay Android updates until compatibility is confirmed.
- Check manufacturer forums for patches or workarounds.
- Use the receiver device (if available) as a backup.
A Call for Accountability
Medical device functionality should never be compromised by a routine OS update. Advocates argue that Google, phone manufacturers, and CGM companies must collaborate better to prevent these disruptions. Until then, users are left weighing the risks of staying on outdated software versus losing access to vital health data.
For people with diabetes, a failed Bluetooth connection isn’t just an inconvenience—it’s a health emergency waiting to happen.
Have you experienced CGM disruptions after an Android update? Share your story in the comments.
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