LG VIPER 4G LTE User Manual page 60

Add call to initiate a 3-way call.
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End to end the current call.
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Dialpad to display the dialpad to enter additional numbers, for example, an extension or access
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code.
For example: W hen you call your bank's 800 number, use your dialpad to enter your account
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number and PIN.
Speaker to route the phone's audio through the speaker (On) or through the earpiece (Off).
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Activate Speaker to route the phone's audio through the speaker. (You can adjust the
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speaker volume using the volume buttons.)
Deactivate Speaker to use the phone's earpiece.
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Warning: Because of higher volume levels, do not place the phone near your ear during
speakerphone use.
Mute to mute the microphone during an active call. Tap again to unmute the microphone.
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Bluetooth (Only available when a Bluetooth headset is connected to your phone) to route the
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phone's audio through a connected Bluetooth headset (On) or through the speaker (Off). For
details about pairing the phone with a Bluetooth headset, see Pairing Bluetooth Devices.
When the call is routed to a Bluetooth headset, the current call area shows the Bluetooth call
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icon ( ). (Only when you are using other phone features while in a call.)
Phone Calls 52