Alcatel IDOL 4 6055A Manuel D'utilisation page 35

4�1�3 Reversible call functionality
Your phone features a unique Reversible UI, which ensures complete
functionality. When this feature is enabled through the Settings\
Display\Reversible menu, it allows normal calls to be made or
received even when the phone is held upside down. The reversed
UI will appear upright and normal, even if the phone is upside down.
When in the reversed position, the phone UI will appear upright and
normal. The phone will function normally in all respects as it relates
to interacting with the display, except that the power and volume
keys will be on the opposite sides of their normal position. Also, take
care to remember that the camera lenses (front and back) will be
toward the lower edge of the device when in the reversed orientation.
Please note that while a call is connected (user has selected Answer
or Send), the UI will be fixed for the duration of the call. To disable
the Reversible feature, go to the Settings\Display setting menu and
disable Reversible.
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