LG G3 - Hardware Key Control Mode

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The Basics
Offline speech recognition : Sets one or more additional languages for
speech recognition when you don’t have a network connection.
Block offensive words : Enable to hide offensive voice results.
Bluetooth headset : Enable to record audio through a connected
Bluetooth headset.
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Text-to-speech output : Sets the preferred speech engine and speech
rate (very slow to very fast). Also plays a short demonstration of speech
synthesis and displays the language status.
MOUSE/TRACKPAD
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Pointer speed : Sets the pointer speed.
Languages
You can set only one default language for your phone, but you can set
multiple languages used for the on-screen keyboard.
To change the default language
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From the Home screen, touch and hold the
Recent Apps Key (in the
Touch Keys bar) >
System settings > General tab > Language & input >
Language > tap the language you want.
To add additional languages for your keyboard
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From the Home screen, touch and hold the
Recent Apps Key (in the
Touch Keys bar) >
System settings > General tab > Language & input .
Tap the Settings icon (to the right of LG Keyboard), tap Input
language and keyboard layout , then enable the languages you want the
keyboard to be able to use.
Hardware key control mode
If your phone display is damaged or broken, you can answer an incoming
call, or turn off an alarm using the hardware keys on the back of the phone.
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Answer a call: Press both Volume Keys at the same time.