Android only shows "Unknown" device name when scanning with requestDevice()

[mley]

Describe the bug
When using the requestDevice() method to scan for BLE heart-rate monitors, Android shows the devices only as "Unknown" with their MAC address. I test this with a Polar H9 and a Garmin watch in broadcast mode. On iOS the names of the devices are shown correctly.

await BleClient.requestDevice({
        services: ['0000180d-0000-1000-8000-00805f9b34fb'],
        scanMode: ScanMode.SCAN_MODE_LOW_LATENCY,
      });

To Reproduce
Steps to reproduce the behavior:

1. Turn on BLE HR monitor
2. Call requestDevice()
3. See result

Expected behavior
I expect the pick device dialog to also show the name of the device

Screenshots

Plugin version:

• @capacitor-community/bluetooth-le: 3.1.2

Smartphone (please complete the following information):

• Device: Samsung Galaxy A22
• OS: Android 13
• Browser: Chrome

[pwespi]

I'm unable to reproduce this on my test devices. Are you seeing this on multiple Android devices?

[peitschie]

Worth noting, iOS has 2 mechanisms for reporting BLE name, while Android only uses the advertised name. I wonder if the above is only showing the GAP name in iOS, which is cached after connection?

See https://forums.developer.apple.com/forums/thread/19381

@mley capturing the specific advertising packet using nrf Connect would perhaps make it clearer what's being broadcast.

[mley]

Thanks for the reply.

I tried again today with the same Android device and the same Polar H9 and this time the name of the device came back correctly. It might have just been a hiccup, fixed by a reboot of the Android phone...

Sorry for the inconvenience. I will close the issue then.