[Raspberry Pi] How Do I Turn Off Wi-Fi and Bluetooth on Raspberry Pi OS?

On Raspberry Pi OS, you can use the rfkill command to turn wireless functions on and off.
The rfkill command can turn Wi-Fi and Bluetooth on and off.

Test Environment

Raspberry Pi OS - Debian GNU/Linux 12 (bookworm)

Raspberry Pi 5 8GB Model: Raspberry Pi 5 Model B Rev 1.0 (Rev. d04170)

Raspberry Pi 4 8GB Model: Raspberry Pi 4 Model B Rev 1.4 (Rev. d03114)

Check the Device ID

Check the number in the ID column. In the example below, the Bluetooth device is 0 and Wi-Fi is 1.

$ rfkill
ID TYPE      DEVICE      SOFT      HARD
 0 bluetooth hci0   unblocked unblocked
 1 wlan      phy0   unblocked unblocked

Disable Wi-Fi

You can stop it with block.

$ rfkill block 1
$ rfkill
ID TYPE      DEVICE      SOFT      HARD
 0 bluetooth hci0   unblocked unblocked
 1 wlan      phy0     blocked unblocked

Stop Wi-Fi and Bluetooth

block all stops both.

$ rfkill block all
$ rfkill
ID TYPE      DEVICE    SOFT      HARD
 0 bluetooth hci0   blocked unblocked
 1 wlan      phy0   blocked unblocked

Enable Wi-Fi

You can restore it with unblock.

$ rfkill unblock 1
$ rfkill
ID TYPE DEVICE SOFT HARD
0 bluetooth hci0 blocked unblocked
1 wlan phy0 unblocked unblocked

Disable the Wi-Fi Module

If you want to stop it at the hardware level, add dtoverlay=disable-wifi near the end of config.txt. If you also want to stop Bluetooth, add dtoverlay=disable-bt.
A reboot is required for the settings to take effect.

$ sudo vi /boot/firmware/config.txt Disable Wi-Fi H/W Module dtoverlay=disable-wifi Disable onboard Bluetooth dtoverlay=disable-bt $ sudo reboot H/Wをオフにすると rfkill には表示されなくなる

$ rfkill $