USB Host Diagnostics determines your device's USB host capabilities.

USB host is a very powerful feature of recent Android based smartphones and tablets, but on many firmwares (both stock and custom) the feature is somewhat broken.

For example, at launch the Galaxy Nexus told all the apps and the Market that it supported USB host, but USB host did not actually work (this was fixed in the Android 4.0.2 update). This broke several apps.

That is just one example of many. There are even cases where OEMs advertise USB host support, but the device does not support it at all. It appears as if USB host support isn't tested by Google or the OEMs when they push out new firmwares and devices at all.

As we cannot depend on Google or the OEMs to correctly provide information regarding USB host support, and the Android framework will regularly lie about it to both the Market as well as Android apps, this application was created so you can test your device's USB host capabilities for yourself.

If you allow it, the app will also submit your results to my website, so together we can create a complete database of devices and firmwares and their USB host support.

This tool may also come in handy for those porting firmwares.

Requirements:
- Android 2.3.1 or newer
- (Optional) Root
- USB OTG cable (unless your device has a fullsize USB port)
- USB memory stick, or another USB device to test the connection with

The result database is available here:
http://usbhost.chainfire.eu/

The discussion thread on XDA-Developers can be found here:
http://forum.xda-developers.com/showthread.php?t=1493325

Shows enumerated usb devices, and allows you to mount external mass storage devices to the filesystem. Supports advanced features like the ability to reload partition tables and reseting USB devices. It can also control the USB Host functionality of S5PC210 devices with the appropriate kernel patch (more about this later)

The application does not use the USB Host API, so it can also run on older, 2.x devices. Because of that however almost all functionality (except for the listing of USB devices) requires root (superuser) access, and a recent version of busybox installed!

The application needs a device that has USB Host (or USB OTG) functionality. Most modern high-end devices have this ability. Check the documentation and specification of your device (this functionality is usually called USB OTG or USB Host)

If your device doesn't have native USB OTG functionality, there are kernel patches for some older devices to enable the functionality, most notably for:

- S5PC210 (Hummingbird) based Samsung phones (Galaxy S, Captivate, Nexus S)
- QSD8250 (Snapdragon) based HTC phones (G1, Nexus One, Desire, Incredible)

You can find appropriate kernel drivers for these phones here:
- Hummingbird / Samsung phones: http://forum.xda-developers.com/showthread.php?t=1450298
- Snapdragon / HTC phones: http://sven.killig.de/android/N1/2.2/usb_host/

Note that these drivers might require skills to install, and may damage your phone and void your warranty!

More info about this application at: http://forum.xda-developers.com/showthread.php?t=1468531

▌ IMPORTANT - Please read the entire description before giving feedback.
IF IT DOES NOT WORK ON YOUR DEVICE, PLEASE DO NOT RATE
It is not supposed to work on every device. If it does not work, please report (with log) here -> http://goo.gl/h6JTN

☆ See list of confirmed working devices: http://usbotghelper.wordpress.com/confirmed-devices/

▌ IMPORTANT - ROOTED devices ONLY!!
What is rooting? Read here -> http://en.wikipedia.org/wiki/Android_rooting

▌ "USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as digital audio players or mobile phones to act as a host, allowing other USB devices like a USB flash drive, mouse, or keyboard to be attached to them." - Wikipedia

▌Features [ Open Menu -> Settings to enable or disable. ]:
-------------------------------------------------------------------------------------
• Automatically start app on device connect [ See FAQ below ]
• Automatic mount [ Donate version ] [ See FAQ ]
• Mount and Unmount drive with a single click
• Full NTFS support! (FAT, Ext2/3/4 also if kernel supports)
• exFAT support! [ See FAQ to enable ]
• Notification when drives mounted!
• Load modules required automatically (from /system/lib/modules)
• Option to enable utf-8 mode (if kernel support)
• Automatically open the mounted drive [ Donate version ] [ See FAQ ]
• Media scanner triggered on mount [Active media scan in Donate version]
• One click debugging [ Donate version ] [ See FAQ below ]
• No Ads!

▌What phones are supported?
---------------------------------------------
☆ Confirmed: http://usbotghelper.wordpress.com/confirmed-devices/

Any phone in which kernel supports USB Mass storage (stock OR custom kernels OR with appropriate kernel modules)
If it works on your device, or you know of kernels or modules please give the details here -> http://goo.gl/h4xGl

☆ List of modules and kernels can be found here -> http://goo.gl/NXVEL

Please note that this app is an "Helper" app.. it will not magically make your kernel support USB Mass storage!

▌What are the requirements?
-------------------------------------------
• root (su binary)
• supporting kernel / kernel modules
• USB OTG cable ( or direct card reader, see this kickstarter project and support them -> http://goo.gl/LPPrB )

▌WARNING
-------------------
☆ I will not be held responsible for any damage to your device. Do not use for a long time, u may risk burning the device chip/motherboard due to the voltage supply in host mode.

▌FAQ
----------
See -> http://usbotghelper.wordpress.com/faq/

▌Trouble-shooting!:
---------------------------
If still not working, send me debugging data (one-click for donate version)
If still something does not work, mail me. I cannot reply to feedback!

▌Contact
--------------
email : shardulseth {at} aol .com
website : http://usbotghelper.wordpress.com
xda     : http://tinyurl.com/otg-xda

▌Translation credits
-----------------------------
[ Translate to your language -> http://tinyurl.com/otg-translate ]
Greek - Nianios Romanos
Russian - Igor Nedoboy
Ukranian - Alexandr Tobolin (Toz1k)
Hungarian (Magyar) - Varga Zsigmond (Sigismund)
Italian - walpis
German - Patrick Oberdorf

SEO: usbotg, usb , otg, mass storage, mount, drive, NTFS, ntfs-3g, usb host, stickmount, shardul,

--- For Root Users With Proper Kernel Only ---
Frustrated by the lack of mass usb storage mounting in your android device? Well look no further. Now you can. You'll now recieve standard android notifications when you connect your device via usb. Mount and unmount with ease.

And as an added feature now you can automatically mount your sd card. Just plug your device in and up comes the file window on your computer. (this feature can come in handy for any rooted device)

---- ATTENTION ----
This will only work on rooted devices and requires a kernel that has the ums enabled. For Xoom users this means a kernel like Tiamat <= 1.40) For other rooted devices enjoy automount.

A Step-by-Step installation guide: http://usbstick.hechler.de/installdoc/

FREE trial version.
The trial version is full functional, but it has a time limit until March 31st, 2014.

This is a Plugin for Total Commander for Android! It works not standalone! DO NOT install if you do not use Total Commander!

Works with the meenova Mini MicroSD Card Reader (see http://www.meenova.com) and SanDisk 64GB microSDXC card out-of-the-box (no reformatting necessary) without ROOT!
http://youtu.be/Nmpw4hQaOdU

This Plugin is for tablets (like the Nexus 7 or Nexus 10) or phones (like Nexus 5) which have an USB OTG connector, but do not mount attached USB Sticks.
Reading from and writing to an attached USB-Stick is possible.
ROOT rights are NOT needed.
FAT12, FAT16, FAT32 and exFAT formatted sticks can be read and written.
NTFS formatted Sticks can be read.

If you have tested the plugin you can buy the full version or update to the next trial release.

Please report problems to the forum: http://usbstick.hechler.de/viewtopic.php?f=3&t=8
or via developer mail to: debuginfo@usbstick.hechler.de

The filemanager Total Commander can be installed from the Play-Store:
http://play.google.com/store/apps/details?id=com.ghisler.android.TotalCommander

ATTENTION:
Usage is at your own risk.
Do not use it with sticks containing important data.

For more details look at the forum: http://usbstick.hechler.de

About the permission "full network access": This is needed to open a local network socket for streaming. The plugin does not connect to the internet.

Android 3.1 introduced USB hostmode which allows the user to plug USB devices to your Android tablet in the same way as a Desktop PC and extend its functionality (if the tablet has the correct drivers of course).

This application will provide information about almost all currently plugged-in USB device (see below for more info about the 'almost').

Information includes:
•The Device class
•The USB device path
•The Vendor ID (VID) and the Product ID (PID).
•A List of all interfaces and their endpoints.

If you download the accompanying databases, the application will also be able to provide you with additional info such as the Vendor of the device (which is not necessarily the brand!), the vendor's logo and the product name.

This application uses two different methods to collect information:

1. Android mode will use the native android USB API.
2. Linux mode will parse /sys/bus/usb/devices/.

Each mode (Android/Linux) will provide slightly different information. For example Android mode will give you more information about a device's endpoints and interfaces, while Linux mode will give more information about the device itself (serial number, how it identifies itself, etc.)

Device Subclass resolution will be added in the next version.

I wrote this application as an exercise to explore fragments and the new USB host API. Hopefully it will be useful to someone else.

•The database is parsed from: http://www.linux-usb.org/usb.ids

•All logos are the property of their respective owners

•No ads.

•Source code: https://github.com/alt236/USB-Device-Info---Android

***
Please email me with any bugs/problems/feature requests. I cannot reply to market comments which can make debugging difficult.
***

Turn your Nexus 7 into USB keyboard/mouse for your PC.

This app will install custom kernel to your Nexus 7, that will add HID keyboard/mouse gadget functions to it's USB port.
No driver installation is needed for your PC.
It will work inside BIOS, inside bootloader, with any OS, and with any hardware - PC, Mac, Xbox, Chromebook, even with other Android devices through USB Host adapter.

Only Nexus 7 2012 WiFi with Android 4.4.2 is supported at the moment.
If your Nexus 7 is not rooted - follow installation instructions at:
https://github.com/pelya/android-keyboard-gadget
If you have any other device, you may try to compile the kernel yourself, using kernel patch from this webpage.

Works best with Hacker's Keyboard: https://play.google.com/store/apps/details?id=org.pocketworkstation.pckeyboard

I'm planning to add remote control functionality, with live camera feed,
so you can turn your Nexus 7 into an overpriced remote desktop / KVM switch solution.

Before buying this plugin please try the FREE trial version, whether it fits your requirements or not: http://play.google.com/store/apps/details?id=de.hechler.tcplugins.usbstick
If the FREE version does not work for you, then the FULL version will also not work!

A Step-by-Step installation guide: http://usbstick.hechler.de/installdoc/

This is a Plugin for Total Commander for Android! It works not standalone! DO NOT install if you do not use Total Commander!

Works with the meenova Mini MicroSD Card Reader (see http://www.meenova.com) and SanDisk 64GB microSDXC card out-of-the-box without ROOT!
http://youtu.be/05ztx5oFX5c

Please report problems to the forum: http://usbstick.hechler.de/viewtopic.php?f=3&t=8
or via developer mail to: debuginfo@usbstick.hechler.de

This Plugin is for tablets (like the Nexus 7 or Nexus 10) or phones (like Nexus 5) which have an USB OTG connector, but do not mount attached USB Sticks.
FAT12, FAT16, FAT32 and exFAT formatted Sticks can be read and written to.
Reading and streaming from NTFS formatted Sticks is possible.

ROOT rights are NOT needed.

The filemanager Total Commander can be installed from the Play-Store: http://play.google.com/store/apps/details?id=com.ghisler.android.TotalCommander

ATTENTION:
Usage is at your own risk.
Do not use it with Sticks containing important data.

For more details look at the forum: http://usbstick.hechler.de

About the permission "full network access": This is needed to open a local network socket for streaming. The plugin does not connect to the internet.

Nexus USB OTG File Manager allows you to open and copy files from any USB mass storage device with a FAT32 or NTFS filesystem using the USB OTB port of your device, tablet or phone.

With a FAT32 filesystem, you can copy files to any USB mass storage device and manage your files on it (edit filenames, add directories, delete files) too.
You can also manage your files in the internal memory of your device.

This application has been designed for Nexus products which have an USB "OnTheGo" port, as the Nexus 7 2013 and the brand new Nexus 5. But it could work on any device with an USB OTG port Under Androïd 4.0 or later, including the last Androïd 4.4 KitKat.

Root privileges are NOT necessary!

For now, FAT32 filesystem is supported for data read and write, and NTFS filesystem is only supported for data read. You can use USB sticks or SD card readers with any compatible USB OTG cable.

*** FEATURES ***

Nexus USB OTG File Manager allows you to open your files directly from your USB device! You just need to have an app that can handle it. For audio and video, I advise you to use VLC.
The new Network Access authorization is only here for local use to be able to open the files. The app NEVER send or receive data to/from Internet.

Nexus USB OTG File Manager supports devices with multiple logical units (like a GPS with an internal memory and an additionnal SD card) and allows you to choose which logical unit you want to read.

Nexus USB OTG File Manager now includes an "Advanced Mode" which allows you to access to all the files of your device. You can now create files and directories outside of the official Androïd public directories. This is for advanced users only!

Before buying this application, please try the free trial version named Nexus USB OTG FileManagerTrial to be sure that this application is working with your USB devices.

This is not an official Google application. Nexus brand is the property of Google.

▌This app is a key to unlock more features in USB OTG Helper. This app does nothing by itself.

☆ Your donation will help in supporting development of this app.

☆ Other features unlocked are:
1. Automatic mounting on device connect / boot [ See FAQ ]
2. Automatic file explorer choice on mount [ See FAQ ]
3. Active media scanning after mount
4. Direct sending of debugging mail to developer.
5. Any more features integrated to the app.

▌Please do not un-install this app!
You can hide the launcher icon from within the app. You can still access the app from within the options menu of the main app.

▌ FAQ
----------
(1) What is automatic mount? Will it work for me?
The app listens for USB_DEVICE_ATTACHED and BOOT_COMPLETED intents. If your device does not send the intent, automatic mount will not work.
Also, once main app should have been opened manually beforehand for it to work.

(2) What is automatically open file manager?
After mount, the app can automatically open the file explorer..
Only some file managers (eg OI File Manager) support the intent for opening at a specified folder and are recommended.
Other file managers are just launched and are indicated with an asterix (*).

(3) Features are not unlocked / Getting repeated License check Retry?
First time verification will need internet access. The license policy is managed by google (ServerManagedPolicy), so license check may happen maximum once per session in the main app. If you find it annoying, feel free to contact me, I may change it.

▌Contact
--------------
email : shardulseth {at} aol .com
xda : http://forum.xda-developers.com/showthread.php?t=1588940
website : http://usbotghelper.wordpress.com

OTG Disk Explorer lets you to read USB flash drives as well as card readers from your Nexus 7 or Nexus 10 tablets. All you have to do is connect the flash drive to an OTG(On-the-go) cable then plug in the micro USB connector of your tablet, then open this app you will see all files in USB drive and you can open them with your favorite app viewers or editors. Current support FAT32 disk format of flash drives.

Note: Before you buy this program, It is strongly suggest that you may install free OTG Disk Explorer Lite and test if your device and flash drive work well,

For Wiki or Q/A, please reference this page:

http://andastudio.wordpress.com/kiwi-for-otg-disk-explorer/

If you have any issue for the app, please leave a message on this page:

http://andastudio.wordpress.com/otg-disk-explorer-bug-report/

OTG Disk Explorer lets you to read USB flash drives as well as card readers from your Nexus 7 or Nexus 10 tablets. All you have to do is connect the flash drive to an OTG(On-the-go) cable then plug in the micro USB connector of your tablet, then open this app you will see all files in USB drive and you can open them with your favorite app viewers or editors. Current support FAT32 disk format of flash drives. Note: Lite version limit single file size to 30mb, if you need to open file larger than 30mb, you may need OTG Disk Explorer Pro.

For Wiki or Q/A, please reference this page:

http://andastudio.wordpress.com/kiwi-for-otg-disk-explorer/

If you have any issue for the app, please leave a message on this page:

http://andastudio.wordpress.com/otg-disk-explorer-bug-report/

--- For Root Users With Proper Kernel Only ---
Frustrated by the lack of mass usb storage mounting in your android device? Well look no further. Now you can. You'll now recieve standard android notifications when you connect your device via usb. Mount and unmount with ease.

And as an added feature now you can automatically mount your sd card. Just plug your device in and up comes the file window on your computer. (this feature can come in handy for any rooted device)

Add to that OTG Drive support. Now you can mount your usb drives on your android device. For this feature you need Android OS 3.1. This is the first device to officially support OTG mode.

---- ATTENTION ----
This will only work on rooted devices and requires a kernel that has the ums enabled. An OTG cable is required for using usb keys. It also requires a kernel with ums enabled and modules for ntfs/hfs/hfs+ etc.

USB Sharp Let your phone into a high-capacity, portable wireless U disk, convenient, and efficient management of your files!
If you have a long-term or frequent data cable with plug SD card troubles, then please use the USB Sharp, USB Sharp can
Allow you to eliminate more trouble!
Note:
* Mobile phones and computers sharing a wireless router must be the same
* Only in Share UI through a browser interface to shared files

Has the following features:
**** Convenient and efficient file sharing
* Support WIFI file sharing (can achieve upload, download, delete, create folder manipulation)
* Support for file and folder sharing (via email, Bluetooth)

**** Convenient, efficient management documents
* Support for file and folder sorting (by name, time, size, file type)
* Support for editing files and folders (available to copy, cut, delete, rename, compress (zip), unzip (zip) operation)
* Support Select All and Deselect All operations;
* Support for audio and video, built-in player

**** Convenient and efficient text editing
* Support for text copy, cut, paste, replace
* Support for external files to copy and paste text
* Automatically select encoding text documents
*** New Text File (default encoding is UTF-8), pictures (by the camera) and folders
*** Support for Simplified Chinese, English

**** Off device for the root
* Support to obtain root privileges (to modify file and folder permissions to read and write)
USB Sharp Supported file formats:
Plain text:. Txt
Image:. Png. Jpg. Jpeg. Gif
Video:. Mp4. Mov. M4v .3gp
Audio:. Mp3. M4a. Aac
Web:. Htm. Html. Xhtml
Compression:. Zip

This tool is a simple tool for Developpers.You can call Settings UI which can toggle Enabling USB Debug etc,same as Settings -> Applications -> Development.You can check your own appearance to select there.(in your environment,item numbers shown may be different from screenshots).I place this tool at my home screen.
I made this tool for practice purpose and my own use.

※This tool is not usb driver.Please install usb driver if you can't connect device and pc.Usually you can download it from device vendor's site.

ps
I got inquiry,so add notes.
At first, I try to make this tool as widget which can toggle USB Debug settings directly if you touch it.But I don't adapt it because it's not recommended way from Android 1.5. So I choose normal Activity which just finishes after calling Settings UI.

reference(for developpers)
http://android-developers.blogspot.com/2009/04/future-proofing-your-apps.html

Requires root access!!

This application allows you to enable USB Mass Storage mode on select Samsung and Sony devices.

This will export your microSD card over USB as a mass storage device, this will NOT work with your internal memory due to hardware and software limitations.

You can also create shortcuts to easily toggle between UMS on and off.

Tested or reported working on:
* Samsung Galaxy S4 (GT-I9500, GT-I9505, SGH-I337, SGH-M919)
* Samsung Galaxy SIII (GT-I9300, GT-I9305, SPH-L710)
* Samsung Galaxy Note II (GT-N7100)
* Samsung Grand Duos (GT-I9082)
Thanks to d4fseeker and Sakaschi for the methods used to enable UMS.

Internet permissions required for ads.

As of version 2.2, there's a new pro version that has auto-switching. If you have donated before, please contact me and I'll arrange a workaround for you as it's unfair for you to pay twice, thank you :)

Old changelog:
[2.0]
* New layout and improved UI.
* Better code handling.
* Basis for new Xposed-powered version that hooks deep into Android.

[1.5]
* Fixed overlapping items when the device is flipped into landscape.

[1.4]
* Now uses RootTools to check BusyBox and root, the app should be more reliable.
* Do some checks to see if the mount point doesn't have an actual block mounted to it (is SD card available?)
* Fallback to first detected block device

[1.3]
* Added untested support for Verizon's Galaxy S4 (SCH-I545) (Not working)

[1.2]
* Added ads. Don't like ads? They can be disabled :)
* Handle a few more exceptions in code.
* Attempt to detect if a user does not have BusyBox installed, if so, redirect them to Play Store listing.

[1.1]
* Add non-tested support for the Samsung Galaxy S4 (i9505), might work on other S4s.

[1.0]
* Initial release.

Keywords: Sony, Samsung, Galaxy, USB, Mass, Storage, Enabler

A nearly complete emulator of HP 12c Platinum financial calculator that actually works!

This is a restricted demo version you can try before buying the application.

This application emulates one of the best financial calculators - the famous 12c Platinum from HP. We did not aim to completely emulate the visual appearance of real calculator. Instead, we are focused on precise emulation of the calculator functions

The main differences from real calculator:

- ON button does not actually turn the calculator on or off, but instead it changes digits separator from dot to comma and vice versa
- when a program is running, the display shows actual calculations performed, not just "running"
- there is no trade-off between program memory and storage registers
- the state of financial registers and RPN stack is displayed on the screen
- in ALG mode, the display shows if there are incomplete calculations, and number of open brackets

A nearly complete emulator of HP 12c Platinum financial calculator that actually works!

You can try demo version before buying.

This application emulates one of the best financial calculators - the famous 12c Platinum from HP. We did not aim to completely emulate the visual appearance of real calculator. Instead, we are focused on precise emulation of the calculator functions

The main differences from real calculator:

- ON button does not actually turn the calculator on or off, but instead it changes digits separator from dot to comma and vice versa
- when a program is running, the display shows actual calculations performed, not just "running"
- there is no trade-off between program memory and storage registers
- the state of financial registers and RPN stack is displayed on the screen
- in ALG mode, the display shows if there are incomplete calculations, and number of open brackets