CDD: Minimum display requirements for Handheld devices.
Updated existing requirement of minimum display size
(2.5+ inches in physical diagonal size) to 3.3 so that all
apps will be able to run. Currently some functions are hard to
touch on small displays.
The new display size is derived from the accessibility/human factor
guideline 5 icons placed side by side at 10mm each as per the
human factors guidelines, become 50mm, or roughly 2 inches.
Change-Id: I0422de8b647dc6824c0d8c7ae11a8e8e1d15a9b8
BUG: 148973087
diff --git a/2_device-types/2_2_handheld-reqs.md b/2_device-types/2_2_handheld-reqs.md
index 07a17f5..000315a 100644
--- a/2_device-types/2_2_handheld-reqs.md
+++ b/2_device-types/2_2_handheld-reqs.md
@@ -8,7 +8,9 @@
following criteria:
* Have a power source that provides mobility, such as a battery.
-* Have a physical diagonal screen size in the range of 2.5 to 8 inches.
+* Have a physical diagonal screen size in the range of 3.3 inches (or
+ 2.5 inches for devices which launched on an API level earlier than
+ Android 11) to 8 inches.
The additional requirements in the rest of this section are specific to Android
Handheld device implementations.
@@ -23,12 +25,28 @@
Handheld device implementations:
* [[7.1](#7_1_display_and_graphics).1.1/H-0-1] MUST have at least one
-Android-compatible display at least 2.5 inches in physical diagonal size and
-each Android-compatible display MUST meet all requirements described on this
+Android-compatible display that meets all requirements described on this
document.
* [[7.1](#7_1_display_and_graphics).1.3/H-SR] Are STRONGLY RECOMMENDED to
provide users an affordance to change the display size (screen density).
+If Handheld device implementations support software screen rotation, they:
+
+* [[7.1](#7_1_display_and_graphics).1.1/H-1-1]* MUST make the logical screen
+that is made available for third party applications be at least 2 inches on the
+short edge(s) and 2.7 inches on the long edge(s).
+Devices which launched on an API level earlier than that of this document are
+exempted from this requirement.
+
+If Handheld device implementations do not support software screen rotation,
+they:
+
+* [[7.1](#7_1_display_and_graphics).1.1/H-2-1]* MUST make the logical screen
+that is made available for third party applications be at least 2.7 inches on
+the short edge(s).
+Devices which launched on an API level earlier than that of this document are
+exempted from this requirement.
+
If Handheld device implementations claim support for high dynamic range
displays through [`Configuration.isScreenHdr()`
](https://developer.android.com/reference/android/content/res/Configuration.html#isScreenHdr%28%29)
