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How do I scan my FreeStyle Libre sensor with my phone?

Android:
After you've applied a FreeStyle Libre sensor to the back of your upper arm, open the app* and hold the back of your Android phone near (exact distance will vary by phone) the FreeStyle Libre sensor to scan it. The size and location of the Near-Field Communication (NFC) antenna in Android phones vary by make and model, so you may have to move the phone around to find the best position for scanning the FreeStyle Libre sensor. Once you have found the optimal scan position, wait for the app to produce two distinct tones or vibrations before you move the phone away from the FreeStyle Libre sensor. The first tone indicates the phone's NFC has recognized the sensor. The second tone indicates the scan is complete.

 

iPhone:
After you've applied a FreeStyle Libre sensor to the back of your upper arm, open the app* and tap one of the scan buttons within the app to put the iPhone in a scan-ready state. There are two types of scan buttons: a blue button on the Home screen and a grey scan icon in the top right corner of most screens. Hold the top edge of your iPhone near the sensor and do not move your iPhone until you hear a tone and/or feel a vibration, which indicates the scan is complete.

 

 

* The FreeStyle LibreLink app and the FreeStyle Libre reader have similar but not identical features. A finger prick test using a blood glucose meter is required during times of rapidly changing glucose levels when interstitial fluid glucose levels may not accurately reflect blood glucose levels or if hypoglycemia or impending hypoglycemia is reported by the FreeStyle LibreLink app or when symptoms do not match the app readings. The FreeStyle Libre sensor communicates with the FreeStyle Libre reader that started it or the FreeStyle LibreLink app that started it. A sensor started by the FreeStyle Libre reader will also communicate with the FreeStyle LibreLink app. The FreeStyle LibreLink app is only compatible with certain mobile devices and operating systems. Please check the Compatibility Guide (PDF 69 kB) for more information about device compatibility before using the app. Use of FreeStyle LibreLink requires registration with LibreView.

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IMPORTANT: The information provided is not intended to be used for medical diagnosis or treatment, or as a substitute for professional medical advice. Refer to package insert/label accompanying your product for detailed instructions and indications for use. FreeStyle and related brand marks are trademarks of Abbott in various jurisdictions. The FreeStyle Libre 2 flash glucose monitoring system is indicated for measuring interstitial fluid glucose levels in people aged 4 years and older with diabetes mellitus. Always read and follow the label/insert. The FreeStyle Libre flash glucose monitoring system is indicated for measuring interstitial fluid glucose levels in adults aged 18 years and older with diabetes mellitus. Always read and follow the label/insert.