USB OTG Checker app is a very useful app and easy to verify whether your Android phone support USB OTG or not. USB OTG Checker application checks whether USB Host support is enabled. On rooted devices, an attempt to enable USB support can be performed.

In this app you can check whether your OTG is compatible with your device or not. This is useful if you are not sure and want to use the USB OTG checker to verify before you go and buy an OTG adapter or a flash drive but your device ends up not supporting OTG which will be a waste of money. In this app you can also make sure that whether your device can connect to a standard USB input device such as keyboard, external storage or not if your device can support USb OTG.