Final answer:
Enabling USB debugging via adb requires that USB debugging has been previously enabled on the device, as new security measures prevent toggling this setting via adb directly without prior authorization. If USB debugging is already turned on, you can enable network debugging (over Wi-Fi) using the command 'adb tcpip 5555' followed by 'adb connect :5555'. To initially enable USB debugging, you need to do so manually within the device's Developer options.
Step-by-step explanation:
To enable USB debugging using an adb command, you first need to ensure that your Android device is connected to your computer with a USB cable. It is important to note that the adb (Android Debug Bridge) tool is part of the Android SDK Platform-Tools, so you should have that installed on your computer.
However, the catch is, to use adb to enable USB debugging, you generally need to have USB debugging already turned on, since adb needs this communication bridge to interface with the device. Therefore, from a standard security perspective, Android OS does not allow enabling USB debugging directly from an adb command for a device that has it turned off.
If USB debugging was previously active and you just need to re-enable it, you may use the following command:
adb tcpip 5555
Then, you can connect to your device over Wi-Fi by finding the device's IP address and connecting to it as follows:
adb connect :5555
But, to initially enable USB debugging, you typically have to do so manually from the device's settings:
- Open the device's Settings and navigate to 'About phone'.
- Tap on 'Build number' multiple times until you see a message that developer mode has been enabled.
- Go back to the main Settings menu, and you should see 'Developer options'. Tap into it.
- Scroll down to find and enable 'USB debugging'.
Once USB debugging is enabled, you can use adb commands to debug your device, install apps, or perform other development tasks over USB or Wi-Fi connections.