Libre2 loss signal

I know there has been some previous debate on this. My sensor keeps sending lost signal warnings. I've checked my Bluetooth and the sensor is not listed but still will take a reading if I use my phone to touch my arm. I've cleared the cache and rebooted the phone but still an unexplainable alarm recures I turn the sensor alarm off when out of range to stop these annoying messages will I still receive hypo/hyper warnings