Devices running Google’s mobile operating system, Android, often possess the capability to act as a USB host. This functionality allows them to connect to and interact with a variety of peripheral devices, such as keyboards, mice, external storage drives, and even some digital cameras. This connection is typically facilitated through a USB On-The-Go (OTG) adapter or cable.
The availability of this host capability significantly expands the versatility of these mobile devices. It enables users to perform tasks more efficiently, such as data transfer between the phone and an external drive without needing a computer. Furthermore, it provides the convenience of using standard input devices like keyboards and mice for enhanced productivity, especially useful for extended text editing or document creation on the go. The introduction of this function has roots in the desire to overcome limitations related to onboard storage and input methods typically associated with mobile devices.