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OTG is the abbreviation of On-The-Go. It is a USB transmission technology. It was announced by the USB Implementers Forum on December 18, 2001. It is mainly used in the connection between various different devices or mobile devices. , for data exchange.

Through the OTG cable, the mobile phone (requires the mobile phone to support OTG function) can directly access files in devices such as USB flash drives or digital cameras, and can also be connected to external devices such as keyboards and mice.

1. OTG switch setting:

ColorOS 13 and above: "Settings > Other Settings > OTG Connection" to turn on or off the OTG function.

ColorOS 12-12.1 version: "Settings > System Settings > (Convenient Tools) > OTG Connection", turn on or off the OTG function.

ColorOS version 3.0-11.3: Go to "Settings > Other Settings > OTG Connection" to turn on or off the OTG function.

2. After OTG connects the U disk, use your mobile phone to view the U disk path:

After OTG connects the U disk, you can enter the mobile phone's "File Management" APP > Storage to view the U disk path. Content, the displayed disk name is: Udiska.

3. Introduction and use of OTG functions

(1) Original OTG cable function

a. Free operation, no computer required, end-to-end direct copy and *** Share resources.

b. Can be connected to U disk/card reader/wireless keyboard and mouse/tablet and other devices.

c. Directly used to connect OTG-enabled mobile phones to USB flash drives, card readers, digital cameras and other external devices for data transmission and input operations.

For OTG, it is applied to the connection between various different devices or mobile devices for data exchange without PC (computer).

(2) Implementation principle

OTG can be used as both a host and a peripheral. When the OTG cable is connected to the device, the ID pin in the mini-A plug is grounded and the ID pin in the mini-B plug is left floating. When a mobile phone that supports OTG function detects the grounded ID pin of the inserted OTG device, it means that the default is device A (host), and the device that detects the floating ID pin is considered to be device B (peripheral).

(3) Connection method

Connect the Micro USB port to the mobile phone, and then connect the USB port to the corresponding external device.

(4) Connect the storage device through OTG

After connecting to the storage device (such as mobile phone, USB flash drive, etc.) through OTG, the mobile phone will prompt that the USB storage is connected, and at the same time the screen status bar The USB icon will be displayed, and you can view the connected disk UDiskA by entering file management.

Files can be moved, copied, and deleted: In the file management, long press the file (or folder) in the UDiskA disk (or mobile phone storage) to move (or copy) to the mobile phone storage ( or UDiskA disk). At the same time, you can view the total capacity and available space of the USB memory in Settings-Storage.

a. The current U disk capacity supported by the OTG function of mobile phones is 2TB, and the current large-capacity U disk format is NTFS. With the development of electronic products, more formats will be supported.

b. The U disk formats supported by the mobile phone OTG function are FAT, NTFS and other formats, and it also supports connecting hard disk devices.

(5) Connect the mouse through OTG

After the USB interface mouse is connected to the mobile phone through the OTG cable, the mobile phone screen will display a small arrow icon, and the top status bar will display the mouse icon. Drag the mouse indicator arrow to the top of the screen, hold down the left or right mouse button (after connecting to OTG, the left and right mouse button functions are the same), and you can pull down the status bar.

Drag the mouse wheel to switch to different pages. Click the program icon to open the program. But you need to exit the program through the back key of the phone (or the return option of the program itself).

(6) Connect USB keyboard through OTG

USB OTG can connect mouse and keyboard at the same time. After connecting USB keyboard, the keyboard icon will be displayed in the status bar at the top of the screen.

In the editable input interface (such as the SMS interface), you can enter text (Chinese, English) and symbols through the USB keyboard, and press ESC to exit the current program.

Note:

Press F2 on the keyboard to quickly start the camera; the menu key on the keyboard has the same function as the menu key on the phone. Press the menu key on the keyboard to bring up the phone desktop. Press and hold. The menu key can start Xiaoou Assistant and so on.

a. When plugging in a peripheral device, the recognition may be a little slower. You can wait for a while. If it is not recognized, you can reconnect.

b. Can support connecting mobile phones, cameras, U disks, MP3, MP4, MP5, SD cards, mice, keyboards, wireless mice, wireless keyboards, game controllers and other devices.

(7) External network card through OTG

When using the OTG function of the mobile phone to connect an external network card, the following conditions need to be met:

a. The network card needs to come with its own Linux driver.

b. The network card interface is consistent with the mobile phone interface. For example, if the mobile phone has a Type-C interface, the corresponding network card connected to the mobile phone should also be a Type-C interface; or the mobile phone and the network card are connected through the OTG expansion dock. Expand the connection and ensure that the interface is consistent.

Warm reminder:

① Some models do not have the OTG switch turned on, and it will turn on automatically when connected to an OTG device.

② For ColorOS 3.0 and above systems, the OTG function will automatically turn off if it is not used for 10 minutes.

③ When you copy mobile phone files to a USB flash drive through the OTG function, according to the native design of the Android system, the files will be copied to the cache first, and then the files will be written to the USB flash drive in the background. So when you see the prompt that the move is completed, don't rush to pull out the USB flash drive. Wait for a few minutes before pulling it out to avoid the problem of unsuccessful file copying.

Suggestion:

Copy about 200M files and wait 2 minutes before pulling out.

Copy files of about 200M-1G and wait for about 5 minutes before pulling out.

Copy files of about 1G-5G and wait about 15 minutes before pulling out.

④ The current U disk capacity supported by the OTG function of mobile phones is 2TB, and the current large-capacity U disk format is NTFS. With the development of electronic products, more formats will be supported.

⑤ The OTG function does not currently support formatting the U disk. You can select all files to clear the U disk or connect to a computer to format the U disk.