The most common reasons for a signal loss are:
Bluetooth is turned off on your phone
You are far away from your cell phone (more than 33 feet)
You have turned off the Libre 3 app
If it was one of the above common reasons the connection should be restored within 2-4 minutes of remedying the issue. However, if the signal is still not restored please try the following:
Close the Libre 3 app completely and then reopen
βRestart your phone
Android - Press the power button and hold it down for several seconds.
If you continue to have issues with signal loss after these steps please open a ticket with Theia support for further assistance.