A mobile phone is provided. A wireless connection module establishes a wireless connection between the mobile phone and an access point. A storage device stores a first configuration group, a second configuration group, and a third configuration group, each comprising at least one wireless network configuration file. A controller, when a wireless network function of the mobile phone is activated, selects the wireless network configuration file from the first configuration group, when failing to establish a wireless connection based on the wireless network configuration file selected from the first configuration group, selects the wireless network configuration file from the second configuration group, when failing to establish a wireless connection based on the wireless network configuration file selected from the second configuration group, selects the wireless network configuration file from the third configuration group, and establishes the wireless connection according to the selected wireless network configuration file.