Why your smartphone can suddenly act like a computer
In short: Most USB devices require a host to function, but USB On-The-Go (OTG) changes the hierarchy. This video explains how your phone takes control of peripherals and why some compatible-looking cables still fail to connect.
Standard USB architecture typically relies on a dedicated host—like a PC—to manage data flow and provide power to peripherals like mice or flash drives. USB OTG enables mobile devices to bypass this requirement by allowing them to assume the host role directly.
The video explores how an OTG connection identifies which device takes command, how power is distributed between components, and how modern USB-C standards have made these roles more fluid. It also clarifies why a physical connector match doesn't guarantee functionality.
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Sources
- Summary by Intellect · source: How Does a USB OTG Device Work?
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