Android system keeps resetting default USB configuration upon PC connection
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Whenever I'm connecting my Samsung Galaxy A40 running Android 9.0 to a laptop or PC, I'm getting an annoying prompt to allow data transfer, and the following setting which I had set to "Charging phone only" gets reset to "Transferring files":
However, I only want to charge the phone and absolutely never allow data transfer for security reasons as I frequently have to connect my phone to public or workplace PCs for charging. The service which throws the notification/prompt is called *Android System* and the icon looks a bit like this (only with filled font):
I activated developer options and explicitly configured the USB connection settings to **not** allow data transfer. Why does *Android System* keep changing my settings and prompting for data transfer? Is this normal behaviour? Is there a way to regain control without having to root the device?
However, I only want to charge the phone and absolutely never allow data transfer for security reasons as I frequently have to connect my phone to public or workplace PCs for charging. The service which throws the notification/prompt is called *Android System* and the icon looks a bit like this (only with filled font):
I activated developer options and explicitly configured the USB connection settings to **not** allow data transfer. Why does *Android System* keep changing my settings and prompting for data transfer? Is this normal behaviour? Is there a way to regain control without having to root the device?
Asked by david
(141 rep)
Mar 16, 2020, 06:15 PM
Last activity: Jul 2, 2025, 05:06 AM
Last activity: Jul 2, 2025, 05:06 AM