Android Proximity SDK unable to detect beacons

BLE Beacons
1

I am trying to use proximity SDK for Android to detect beacons. I created a sample app from the cloud (Estimote Cloud->Mobile App->Add New App->Proximity for Multiple Beacons). When I compiled/installed/ran the app, I was able to see the beacons detected inside the app. When I closed the app and reopened it subsequently it could not detect it again. I tried this many times and it would not detect it. Some times it would detect it once again after a few attempts or phone restarts.

I saw on logcat that when it successfully detected beacons, status was 0. But when it failed status was 6. See logs below
Successful case
07-25 20:16:54.972 22083-22188/com.estimote.proximitycontent D/BluetoothAdapter: isLeEnabled(): ON
07-25 20:16:54.999 22083-22097/com.estimote.proximitycontent D/BluetoothLeScanner: onScannerRegistered() - status=0 scannerId=32 mScannerId=0
Failed Case
07-25 20:17:37.692 22508-22566/com.estimote.proximitycontent D/BluetoothAdapter: isLeEnabled(): ON
07-25 20:17:37.698 22508-22523/com.estimote.proximitycontent D/BluetoothLeScanner: onScannerRegistered() - status=6 scannerId=-1 mScannerId=0

Reading up online, I see that “status=6 means too frequent scanning and Android would silently fail”

How do I reliably use proximity SDK to detect proximity beacons reliably every single time? Here are the Beacon config details
Beacon H/W: J1.9_B1.1
Firmware: 4.14.4
Estimote Monitoring: ON
Android Version: 9 (Btw tried it on 7 as well and same result)

Also this issue is not observed in IOS and only on Android.

Thanks
Ram

2

As you’ve already figured out, our Proximity SDK currently starts many BluetoothLeScanners under the hood, and Android has a limit of 5 start-scans per 30 seconds. Which means once you start a Proximity Observer, you probably cannot start it again within 30 seconds. It’s something we’ll likely need to optimize better in the future.

As a workaround for now, you can disable telemetry reporting (withTelemetryReportingDisabled) and secure-monitoring (withEstimoteSecureMonitoringDisabled), which should reduce the number of scanners we use.