No Audio When Making Calls Using Dell Mobile Connect App

On Intel 11th generation systems, users may encounter a no audio issue when making calls using Dell Mobile Connect (DMC).

Affected products

Some of the affected products include, but may not be limited to:

• Inspiron 24 5400 AIO
• Inspiron 27 7700 AIO
• Inspiron 5301
• Inspiron 5402
• Inspiron 5402 2-in-1
• Inspiron 5409
• Inspiron 5502
• Inspiron 5509
• Inspiron 7300
• Inspiron 7306
• Inspiron 7400
• Inspiron 7506
• Inspiron 7706
• Vostro 5301
• Vostro 5402
• Vostro 5502
• XPS 13 9310
• XPS 13 9310 2-in-1

Update the Killer 1650-Intel bluetooth UWD and extension driver

To resolve this issue, download and install the latest Killer 1650-Intel bluetooth UWD driver and extension driver.

Download and install the latest Killer 1650-Intel Bluetooth UWD driver

1. Browse to the Dell Drivers & downloads page
2. Enter the Service Tag of your computer, or click on Browse all products and select your computer.
3. Select the Operating System.
4. Under Category, select Network.
5. Locate the latest Killer AX1675/1650 and Intel AX210/AX200/AX201/9260/9560/9462/8265/8260/7265/3165 Bluetooth UWD Driver.
6. Click Download and save the file to your computer.
7. Open File Explorer and browse to the location where the downloaded file is saved.
8. Double-click the Killer-AX1675-1650-and-Intel-AX210-AX200-AX201-9260-9560-9462-8265-8260-7265-3165_989C2_WIN64_22.0.0.2_A22_05.EXE file to start the install process.
9. When prompted, Click Yes at the User Account Control (UAC) prompt (Figure 1).
   
   Figure 1: UAC prompt during driver installation
    
10. Click Install (Figure 2).
    
    Figure 2: Dell driver installation
     
11. Click Close after the Intel Bluetooth driver installation is complete (Figure 3).
    
    Figure 3: Dell driver complete

Download and install Killer 1650-Intel bluetooth extension driver

1. Browse to the Dell Drivers & downloads page
2. Enter the Service Tag of your computer, or click on Browse all products and select your computer.
3. Select the Operating System.
4. Under Category, select Network.
5. Locate the latest Killer AX1650i/AX1650s and Intel AX201/9560/9462 Bluetooth Extension Driver.
6. Click Download and save the file to your computer.
7. Open File Explorer and browse to the location where the downloaded file is saved.
8. Right-click the Intel_Bluetooth_audio_offload_disable_extension_WHQL_Win10x64.zip file and select Extract all.
9. Browse to the unzip folder of Intel_Bluetooth_audio_offload_disable_extension_WHQL_Win10x64 driver.
10. Right-click the ibtHfpOffloadOverrideExt.inf file, and click Install in the drop-down menu and wait for the driver to install (Figure 4).
    
    Figure 4: Install the INF file
     
11. After installing the new Intel Bluetooth driver successfully, restart your system.