Mobile communication terminal and method for performing automatic incoming call notification mode change

A mobile communication terminal for setting a vibration mode, the mobile communication terminal comprising:

• a storage unit for storing a plurality of reference noise signal levels;
• an audio processor for measuring a noise signal value;
• a noise signal level comparator for comparing the measured noise signal value with at least one of the plurality of reference noise signal levels stored in the storage unit;
• and
• a controller for setting the vibration mode if the measured noise signal value is determined to fall within a first noise region according to a comparison by the noise signal level comparator,
• wherein the plurality of reference noise signals includes a lower reference noise signal value lower than an upper reference noise signal value, and
• wherein the first noise region comprises measured noise values less than the lower reference noise signal and measured noise values greater than the upper reference noise signal value.