Patent ID: 7031767

Claim:
A mobile phone for measuring a user's body fat percentage according to the user's weight data, comprising: a mobile phone control module; a display device coupled to the mobile phone control module; a fat measuring control circuit coupled to the mobile phone control module; a constant current electrode pair coupled to the fat measuring control circuit; a voltage measuring electrode pair coupled to the fat measuring control circuit; and a memory device which is coupled to the mobile phone control module and stores a range of target body fat percentage set by the user, wherein when the user touches the constant current electrode pair and the voltage measuring electrode pair, the fat measuring control circuit applies a predetermined current to the constant current electrode pair, causing the voltage measuring electrode pair to generate a measured voltage, the user's body fat percentage is then generated according to the measured voltage and the user's weight data, and the body fat percentage is displayed on the display device, wherein the mobile phone control module selectively imposes restrictions on the length of talk time or the number of calls the user can make within a specific period of time if the user's body fat percentage is outside the target range.