How to save short messages on a USB flash drive?

You can buy a Bluetooth adapter, just like a USB flash drive. The price is about 50- 100 yuan. It is sold in the computer shop. Install the driver, plug it into the USB port of the computer, you can search and connect with the mobile phone through Bluetooth function, and then you can copy files directly between the mobile phone and the computer. Copy it from the mobile phone to the computer first, and then copy it to the USB flash drive.