Zte U F110 User Manual page 37

Headset and Bluetooth. The default settings for each individual profile
are preset at the factory. You can change them in the
Options→Customize menu.
 Tone settings: Set the tone for various conditions.
 Volume: Set the Ringtone and Key tone.
 Alert type: Choose among four modes based on ring and vibration.
 Ring type: Choose among Single, Repeat and Ascending.
 Extra tone: Let the phone alert when Warning, Error, Camp on or
Connect.
 Answer mode: Select Any key to answer a call.
Note: The Headset mode can only be activated with the headset
connected. And the Bluetooth mode can only be activated when the
Bluetooth headset is connected.
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