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USB OTG: What it is and how to use it

Sterling Keys

Some Android devices such as the Nexus 5 support a very useful feature that manufacturers don’t really make a whole lot of fuss over: USB On the go, micro USB OTG adapter, or OTG. At the very basic core, it means that you can use your Android device as a USB host and connect, for example, a USB stick directly to the smartphone. At the core, it has a bunch of other uses. What else can USB OTG be used for and how it works, we’ll explain below.

usb otg 2
With the help of a small cable, you can connect a mouse, keyboard, or USB flashd drive to your Nexus 5.  / © AndroidPIT

What is OTG?

As stated above, OTG stands for “On the go”. With two devices that are USB OTG compatible you can make them communicate with each other and perform certain functions. The most common one we use is when we use a PC, which acts as a host, and connect a USB flash drive or a smartphone to it. With the introduction of more devices being OTG compatible, you can now bypass the PC: photos can be sent directly from your camera to a printer, a keyboard can be connected directly to a mobile device, or a USB stick can be connected to a smartphone.  One of the easiest ways to figure out whether you have a device that is USB OTG compatible is to look for the following USB logo with green arrow.

usb otg logo
If you see this logo, your device is USB OTG capable.

How can you use OTG on your smartphone or tablet?

The applications of USB OTG are varied and based on compatible hardware. With smartphones and tablets, the technology can be used to connect keyboards, mice, hard drives, and USB sticks.  However, not all smartphones and tablets are OTG compatible. If you’re not sure whether your device has the capability of acting as an OTG host, you can easily figure it out by downloading a free app from the Play Store called USB Host Diagnostics.

Just having a device that is OTG compatible isn’t enough though as you’ll also need a suitable OTG cable for your device. Of course, you can easily grab one for a few bucks at a few online portals, including over at Furthermore, to connect storage devices such as a USB flash drive or a hard drive, you may also need an app like USB Host Controller or Total Commander.

usb otg 1
Keyboard and smartphone, together at last. / © AndroidPIT

What can I do with USB OTG?

When you know how to use USB OTG it's possible to couple your smartphone or tablet along with peripheral devices that can be made to control it, like mice or a keyboard. Of course, there are some restrictions, such as some higher tech mice with multiple buttons  not always working, but for the most part the basic operations are enabled.  This type of functionality can be easily used to convert tablets and larger sized devices into a spare laptop on the fly.

Even the connection of storage devices such as USB sticks or external hard drives can be achieved with USB OTG. Using a file manager on your device, you can directly access data on an external storage device and play movies or music without having to store them on your device. Alternatively, you can use it as a non-cloud based back-up storage for storing your photos, music, and other files from your smartphone.

Which devices support USB OTG?

Many of the current iteration of smartphones offer the USB OTG compatibility. Now you know what it is and how to use it, I including the following list:

  • Sony Xperia Z, ZL, Z Ultra, Z1
  • Samsung Galaxy S2, S3, S4, Note 1,  Note 2, Note 3
  • LG Optimus G, G2
  • HTC X, One, One mini, One max
  • Google Nexus 5

Related Topics


Write new comment:
  • yana 3 weeks ago Link

    Is Samsung Tab 7.7 compatible with OTG cable?
    If compatible, can my OTG cable work as battery charger when connected to another USB for my tablet?

  • Peter Dreyer 1 month ago Link

    A problem I have experienced is that it is very difficult to OTG phones and tablet that can charge while using OTG, since they use the mini-USB for charging. In my case I use OTG to receive data from an external sensor 24x7. The solution I have found is an Point-of-view tablet with mini-USB and separate DC charging socket. But for industrial applications I would like a better (less discount type) tablet. Any suggestions...?

  • karan4official 1 month ago Link

    Wao i found it best price at amazon :

  • Graeme Woodward 1 month ago Link

    Fabulous! This article helped me get OTG working on the Sony Xperia Go (ST27a). It couldn't be easier.

    A OTG adaptor (Pudney Micro to USB A Socket, $10 from local electronics store) plus Total Commander, free from Google Play, and it worked blindingly easy. I can now connect external USB flash drives and synchronise exercise data onto Strava from my Garmin Edge 500 cycle computer.


  • Jimmy LightspeeD 1 month ago Link

    note 4 should have it? The article didnt mention it except the note 1,2 & 3

  • T. Hurd 2 months ago Link

    Correction: (posted a link to a controller by mistake)

  • T. Hurd 2 months ago Link

    Be careful with cheap OTG cables. One I got on Ebay fried my phone (S4). I use these from Amazon and have fund they're very solid:

  • Lina Akriv 2 months ago Link

    My mobile is samsung galaxy express 2. Does it support otg? My tablet is samsung galaxy tab 4 SM-T230. Does it support otg? I failed when I tried to connect a keyboard or a memory stick. And... where can I find that logo of usb otg?

  • Gary Blatt 2 months ago Link

    My new Nexus 7 (2013) does it work with this 4.4 KitKat that I have?

  • Ace Shadow 2 months ago Link

    Huawei Ascend P7 has it,
    LG Optimus L7 doesn't.

  • Sven Doldersum 2 months ago Link

    And although the Nexus 5 is stated as a device which supports USB OTG, it does not work anymore with 5.0.1 unfortunately. Did work properly on KitKat though.

  • Wallambok K Dkhar 2 months ago Link

    Does Moto G2 support usb otg?

  • Kevin G. 2 months ago Link

    I presumed all smart phones allowed OTG.. What would be useful is a list of phones that don't provide OTG as I see it as a basic necessity.(And deff would not buy a phone without this feature). I use it to plug my phone to the TV (MTP). Iv tried connecting a mouse but it was more a novelty. I always back up onto USB via OTG connection cable.

  • Guy De Vos 2 months ago Link

    The list of OTG compatible devices is far from complete.

    • thomas rinehart 2 months ago Link

      On the oneplus one site they have one. I'm sure my otg cable would work with it.

  • oldzoom 2 months ago Link

    I use my old Galaxy Note 2(rooted)with various flash drives holding numerous music selections using an OTG cable in my car as a bluetooth media server. I also use OTG cables with the adapter cable to plugin to controllers(gamepads) for use on games that normally don't have controller support. (Root phones/tablets at your own risk), but the payoff can be phenomenal...

  • dan 2 months ago Link

    Can I use an OTG cable with my Samsung Tab 4 (10.1") ?

  • Karl Kaur 9 months ago Link

    Certainly Sony has been doing well to make its smartphones USB OTG compatible.

  • Aashika Venkatesan Feb 26, 2014 Link

    Is it compatible with all the models of printers? and data-cards?

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