USB OTG Checker is a free Android utility tool developed by ujweng that allows you to verify your Android device's USB On-The-Go (OTG) capabilities without rooting your phone or tablet. With this tool, you can determine if your device can connect to standard USB input devices such as keyboards, external storage, and more.

The app offers three main functions to help you determine your device's compatibility:

• Check Device OS on USB OTG: This function checks if your device's operating system or custom ROM has the USB OTG API.
• Check USB OTG Signal: This function determines if your device has loaded with USB OTG driver or kernel to communicate with the USB OTG connected device.
• Browse USB OTG Storage: With this function, you can access and view the USB OTG connected external storage folder.

Overall, USB OTG Checker is a useful tool for those who want to verify their device's compatibility with USB OTG devices. However, the app lacks additional features and may not be necessary for those who already know their device's capabilities.