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Handheld device implementations:

[ 7.1 .1.1/H-0-1] MUST have a screen at least 2.5 inches in physical diagonal size.

[ 7.1 .1.3/H-SR] Are STRONGLY RECOMMENDED to provide users an affordance to

change the display size.(Screen Density)

If Handheld device implementations claim support for high dynamic range displays through

Configuration.isScreenHdr() , they:

[ 7.1 .4.5/H-1-1] MUST advertise support for the EGL_EXT_gl_colorspace_bt2020_pq ,

EGL_EXT_surface_SMPTE2086_metadata , EGL_EXT_surface_CTA861_3_metadata ,

VK_EXT_swapchain_colorspace , and VK_EXT_hdr_metadata extensions.

Handheld device implementations:

[ 7.1 .5/H-0-1] MUST include support for legacy application compatibility mode as

implemented by the upstream Android open source code. That is, device implementations

MUST NOT alter the triggers or thresholds at which compatibility mode is activated, and

MUST NOT alter the behavior of the compatibility mode itself.

[ 7.2 .1/H-0-1] MUST include support for third-party Input Method Editor (IME)

applications.

[ 7.2 .3/H-0-1] MUST provide the Home, Recents, and Back functions.

[ 7.2 .3/H-0-2] MUST send both the normal and long press event of the Back function (

KEYCODE_BACK ) to the foreground application. These events MUST NOT be consumed

by the system and CAN be triggered by outside of the Android device (e.g. external

hardware keyboard connected to the Android device).

[ 7.2 .4/H-0-1] MUST support touchscreen input.

[ 7.2 .4/H-SR] Are STRONGLY RECOMMENDED to launch the user-selected assist app, in

other words the app that implements VoiceInteractionService, or an activity handling the

ACTION_ASSIST on long-press of KEYCODE_MEDIA_PLAY_PAUSE or

KEYCODE_HEADSETHOOK if the foreground activity does not handle those long-press

events.

[ 7.3 .1/H-SR] Are STRONGLY RECOMMENDED to include a 3-axis accelerometer.

If Handheld device implementations include a 3-axis accelerometer, they:

[ 7.3 .1/H-1-1] MUST be able to report events up to a frequency of at least 100 Hz.

If Handheld device implementations include a gyroscope, they:

[ 7.3 .4/H-1-1] MUST be able to report events up to a frequency of at least 100 Hz.

Handheld device implementations that can make a voice call and indicate any value other than

PHONE_TYPE_NONE in getPhoneType :

[ 7.3 .8/H] SHOULD include a proximity sensor.

Handheld device implementations:

[ 7.3 .12/H-SR] Are RECOMMENDED to support pose sensor with 6 degrees of freedom.

[ 7.4 .3/H] SHOULD include support for Bluetooth and Bluetooth LE.

If Handheld device implementations include a metered connection, they:

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