Ble scan beacons in background

Hi! I’m deploying an app in ionic/cangular/capacitor. I use il plugin ble di ionic-native and background mode. My issue is to scan ( without pairing ) variuos beacons in background. But when the app is locked the scan not working. BLEClient.requestLEScan start correctly but not respond with beacons data. I’ve tried with the suggestion for audio play find in this forum, but without result. BLE allows the app to be unlocked, but since this scan has to be done every minute it is not appropriate to resume the app so frequently. Can anyone help me?