How to check the Bluetooth version of Bluetooth headset

Get a Bluetooth headset , Customer service said yes  BLE 5.0, But it doesn't feel like it , How to judge ？

preparation

• install  
  wireshark
    Tools

• MIUI  System phone

• Bluetooth devices

Start capturing Bluetooth logs

• Enter once on the dial  
  *#*#5959#*#*
  , Agree and start collecting Bluetooth logs

• The Bluetooth headset will prompt that the Bluetooth device is disconnected , Then you will be prompted that you are connected

• Dial again  
  *#*#5959#*#*
  , Stop collecting Bluetooth logs , And agree to save the log file to  
  MIUI/debug_log/common/com.android.bluetooth/btsnoop_hci.log

transmission  Log  To the computer

btsnoop_hci.log

  It's binary , Need to use   

wireshark

  Tool View .

text file , Use if not installed  

wireshark ,

You can use a text editor such as Notepad to view .

Check the Bluetooth version through the log

• Use  
  wireshark
    open  btsnoop_hci.log  Log files

• Shortcut key  
  Control + F
    Open search , String search , lookup  
  Read Remote Version Information Complete
  .

Bluetooth HCI Event - Read Remote Version Information Complete
 Event Code: Read Remote Version Information Complete (0x0c)
 Parameter Total Length: 8
 Status: Success (0x00)
 Connection Handle: 0x0002
 LMP Version: 4.1 (0x07)
 Manufacturer Name: Qualcomm Technologies International, Ltd. (QTIL) (0x000a)
 LMP Subversion: 10942
 [Command in frame: 163]
 [Pending in frame: 166]
 [Pending-Response Delta: 4.023ms]
 [Command-Response Delta: 6.828ms]


notice  LMP Version: 4.1 (0x07), Compare  

Link Manager Protocol.pdf (windows.net)

.

hear  4.1 (0x07)  Corresponding  

Bluetooth Core Specification 4.1

.