The invention is applicable to the field of the unlocking of a mobile terminal, and provides a method and a
system for unlocking a mobile terminal, the mobile terminal and a
wearable electronic device. The method for unlocking the mobile terminal by utilizing the
wearable electronic device comprises the following steps of establishing the near-distance communication connection between the mobile terminal and the
wearable electronic device; receiving a radio-frequency
signal with a
password, which is transmitted by the wearable electronic device, by utilizing the mobile terminal when the distance between the wearable electronic device and the mobile terminal is smaller than a preset distance; analyzing the
password from the received radio-frequency
signal by the mobile terminal; and unlocking the mobile terminal by utilizing the
password. By adopting the method and the
system, an encrypted screen, file or application can be unlocked only by manually approaching the mobile terminal to the wearable electronic device, so that convenience and rapidness can be realized, and the inconvenience in manually unlocking the mobile terminal by utilizing a screen can be avoided.