OnePlus
Enable or Disable USB OTG auf OnePlus
USB On-The-Go, or OTG, lets a OnePlus phone act as a host for external USB devices connected through the USB-C port. Depending on the model, this covers USB flash drives used as extended storage, as well as mice, keyboards, or card readers.
If OTG is switched off, the phone simply ignores any device plugged into the USB-C port. This is often the reason a flash drive shows no popup, or a keyboard fails to type anything, even though the cable and adapter are working fine on other devices.
On OnePlus phones running OxygenOS, the toggle sits in the system settings rather than in a quick-settings tile. Go to Open the Settings ➔ Tap on System ➔ Enable or disable OTG storage and switch the option on or off.
Turning OTG on does not noticeably affect standby battery life, since the phone only powers the USB-C data lines when a compatible device is actually attached. If a connected accessory still is not recognized after enabling OTG, the cable or adapter itself is the more likely cause, since not every USB-C cable carries the OTG signal lines needed for host mode.