Kdeconnect bluetooth connectivity

I would like to be able to read and send SMS messages on my Samsung phone from my Ubuntu laptop through bluetooth interface and kdeconnect software.

The ‘KDE Connect Settings’ app in Ubuntu laptop is able to see the phone in a paired status.

The ‘KDE Connect’ app on the Samsung phone is unable to see the device corresponding to Ubuntu laptop.

On the laptop, when clicking on ‘Send ping’ button inside the ‘KDE Connect Settings’ app, nothing happens.

Running KDE Connect app version 1.32.5 in Samsung phone.

Using kdeconnect package version 1.4-0ubuntu5 on Ubuntu
OS version 20.04.6 LTS.

Bluetooth interface enabled in laptop:

$ bluetoothctl show | grep ‘Vendor specific’
UUID: Vendor specific (00005005-0000-1000-8000-0002ee000001)

See these messages in /var/log/syslog in laptop:

    Nov 24 12:21:23 adyar org.kde.kdeconnect.daemon.desktop[2518]: kdeconnect.core: Sending onNetworkChange to 1 LinkProviders
    Nov 24 12:21:23 adyar org.kde.kdeconnect.daemon.desktop[2518]: kdeconnect.core: Broadcasting identity packet
...
    Nov 24 11:49:00 adyar kernel: [  690.574147] Bluetooth: Unexpected start frame (len 7)