Libre 2 Sensor: Once you have scanned your sensor with the LibreLink app it will take up to half an hour for the data to be imported and displayed in your app.

Libre 3 Sensor: In this case, the first data import after attaching and calibrating the sensor takes a little longer. It can take a few hours until you see the first data in the Hello Inside app. After that, however, the data from the Libre 3 sensor is transferred automatically at shorter intervals.