USB debugging is something that is very useful for your phone as it allows you to connect and transfer files between your PC and your phone using your USB cable. The feature is turned on in the developer options portal so you need to access this in order to take advantage of the USB debugging feature. Another reason why you may want to enable the debugging feature is that in order to use Odin with your phone and flash it, you have to have USB debugging enabled. Without being able to use Odin you won’t be able to install new ROM updates if the over-the-air update is not available.
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