By putting your phone in USB debugging mode/developer mode, you can install custom ROMs, root your Android device, and even transfer data from Android to computer. Turning on USB debugging on Android device establishes an connection and communication with your Android device. However, this mode is disabled by default for any brand new Android device to avoid unintentional modifications on your device. You should manually active USB debugging mode on Android to connect your phone/tablet to PC for further backup and transfer options.
For different Android versions there will be different configurations to turn the USB debugging mode. If you can not make sure what version of Android phone/tablet, click to learn How to check what Android Version you have.
1. How to Turn on USB Debugging Mode Android 5.0 Lollipop
The latest Android version, i.e. Android 5.0 (Lollipop), has been released and added fresh animations and new looks into its UI. To see the USB Debugging mode in Samsung Galaxy S6 edge+, LG G4, etc with the latest system of Android 5.0 Lollipop, do the following:
- Open up your device’s "Settings" by pressing the Menu button on your home screen.
- Go to "About phone" or "About tablet" option, tap on "Build number" seven times until you get a "You are now a developer!" message.
- Go back to Settings menu, press "Developer Options", > "USB Debugging". At last, tap OK to turn on USB Debugging mode on Android 5.0 Lollipop.
There will be an icon on the top left of your notification bar that suggesting USB Debugging is ON.
2. How to Enable USB Debugging Android v. 4.2 and Later?
To see the option for USB debugging mode in Android 4.2 or later, e.g Nexus 4 and Samsung Galaxy S6/S5, you should take the following steps as below:
- Go to "Settings" screen, scroll down to the bottom, tap "About phone" or "About tablet".
- Scroll down to find the "Build number" and tap it seven times.
- Then you’ll get a message "You are now a developer!". Congratulations.
- Tap the Back button to "Settings", then, tap and jump into "Developer options".
- At last, scroll down to the Debugging section, toggle the "USB Debugging" slider.
Now that you have USB debugging mode enabled, you can easily disable USB debugging and other developer options when you don’t need them, slide the switch slide the switch to Off at the top of the screen. Easy peasy.
3. How to Turn on USB Debugging on Android 4.1 and Before
The "Developer Options" has always been visible by default Android 4.1 and before. So the process is some kind of easy.
For Android devices with Android 3.0 – 4.1, you can turn on USB debugging mode by tapping: Settings > Developer Options > USB Debugging.
For Android 2.3 or the earlier version, you can active Android debugging as follow: Settings > Applications > Development > USB debugging
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