iOS nrfconnect app is not able to connect BLE 5 device

Hi,

We are in evaluation stage for BLE 5 on NRF52840.

For BLE 5, we are referring to peripheral example project named ble_app_rscs and we see that iOS nrfconnect app is not able to connect device but it's able to see in scanned list. Same with Android everything works connection,dfu.

SDK version:nRF5_SDK_17.0.2_d674dde

Soft device version:s140_nrf52_7.2.0_softdevice

Controller: NRF52840.

iPhone model:iPhone XS Max & iPhone 14

I did some debugging and tried to capture logs in iOS app and device side logs.

In iOS app:

stuck at -> cbCentralManager.connect()

in device side:

sensor disconnects with reason BLE_HCI_CONN_FAILED_TO_BE_ESTABLISHED.

Could you please help us to proceed further.

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