What is USB OTG
USB On-The-Go is a kind of adapter through which the owner of any mobile device can connect to it: keyboard, mouse, hard drives, removable batteries, etc. Thus it turns out that thanks to the USB OTG cable you can literally to turn any smartphone into a computer.
At its core, USB OTG cable very similar to the standard cables, through which charging and data transfer for different smartphones and tablets. On one side the cable has an external USB port, and on the other side a Micro-USB plug. As you might guess, connect any peripherals via USB OTG is possible only to those smartphones and tablets that have the connector for the entrance of Micro-USB.
Technical features
As you know, the technical features of the Android operating system very similar to Linux. Thus it turns out that devices support all the same file system as Linux and transfer the files stored in a particular file system supports USB OTG cable. The list of supported file systems: FAT 16, FAT 32, ext3, and ext4 (since version Android OS 2.3). Of course, not the stated requirements are not always correspond to what happens in reality. In practice, it all depends on the implementation of the system or anything else. In addition, the manufacturer of the smartphone or tablet can limit the list of possible to connect peripheral devices. No problems should occur when dealing with the following types of smartphones: Samsung Galaxy S2, Samsung Galaxy S3, Samsung Galaxy Note 2, Samsung Galaxy Note 3, Samsung Galaxy S4, Nexus Family, Samsung Galaxy Tab, Acer Iconia Tab A200, Acer Iconia Tab A500, Sony Tablet S, Sony Xperia Acro S, Sony Xperia Z, Sony Xperia ZL, LG Optimus G, LG G2 and Sony Xperia Sola.
As for the connection, then some of the problems with this is unlikely to occur. It is enough to set one end of the USB OTG cable into your phone and the other end to attach any peripheral device. After the phone recognizes it, then an appropriate message will appear. Then you can start to experiment with the connection of different devices. For example, the usual utterly keyboard and mouse will bring convenience when working with a smartphone. Joysticks from consoles will allow you to get maximum enjoyment from the games (not all games support such control). Via flash drives you can transfer data to your phone and perform many common tasks with it. In addition, you can connect some removable hard drives and removable battery.