Android disconnect issues

[KV]

I am using HRM demo application on nRF52840 DK with Samsung Tab-A. The nRF Connect App is running on the tablet. We are seeing that the dev kit gets disconnected soon after a connection is established. The error code on peripheral side is 0x2A.

Android version is 7.0 Device model number SM-T580 Bluetooth version 4.2

This does not happen on iPhone 7 with the nRFConnect app.

Also, this does not happen on LG Nexus 5 smartphone running Bluetooth version 4.0.

[KV]

SDK 14.2.0 and Soft device S140 version 5.0.0.-2_alpha. The soft device v6 is not compatible with the latest SDK.

The disconnected reason is BLE_HCI_DIFFERENT_TRANSACTION_COLLISION.

I am trying to set up the latest sniffer (beta release v2.0) with Wireshark and it is functioning intermittently. Sometimes the COM port does not get detected.