Xiaomi Redmi Note 8 64Gb+6Gb Dual LTE [106/132] Usb peripheral mode

[C-3-1] MUST provide a mechanism to access the data on the application shared storage

from a host computer.

SHOULD expose content from both storage paths transparently through Android’s media

scanner service and android.provider.MediaStore .

MAY use USB mass storage, but SHOULD use Media Transfer Protocol to satisfy this

requirement.

If device implementations have a USB port with USB peripheral mode and support Media Transfer

Protocol, they:

SHOULD be compatible with the reference Android MTP host, Android File Transfer .

SHOULD report a USB device class of 0x00.

SHOULD report a USB interface name of 'MTP'.

7.6.3. Adoptable Storage

If the device is expected to be mobile in nature unlike Television, device implementations are:

[SR] STRONGLY RECOMMENDED to implement the adoptable storage in a long-term

stable location, since accidentally disconnecting them can cause data loss/corruption.

If the removable storage device port is in a long-term stable location, such as within the battery

compartment or other protective cover, device implementations are:

[SR] STRONGLY RECOMMENDED to implement adoptable storage .

7.7. USB

If device implementations have a USB port, they:

SHOULD support USB peripheral mode and SHOULD support USB host mode.

7.7.1. USB peripheral mode

If device implementations include a USB port supporting peripheral mode:

[C-1-1] The port MUST be connectable to a USB host that has a standard type-A or type-C

USB port.

[C-1-2] MUST report the correct value of iSerialNumber in USB standard device descriptor

through android.os.Build.SERIAL .

[C-1-3] MUST detect 1.5A and 3.0A chargers per the Type-C resistor standard and MUST

detect changes in the advertisement if they support Type-C USB.

[SR] The port SHOULD use micro-B, micro-AB or Type-C USB form factor. Existing and

new Android devices are STRONGLY RECOMMENDED to meet these requirements so they

will be able to upgrade to the future platform releases.

[SR] The port SHOULD be located on the bottom of the device (according to natural

orientation) or enable software screen rotation for all apps (including home screen), so

that the display draws correctly when the device is oriented with the port at bottom.

Existing and new Android devices are STRONGLY RECOMMENDED to meet these

requirements so they will be able to upgrade to future platform releases.

[SR] SHOULD implement support to draw 1.5 A current during HS chirp and traffic as

specified in the USB Battery Charging specification, revision 1.2 . Existing and new

Android devices are STRONGLY RECOMMENDED to meet these requirements so they will

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