A mobile terminal and a method for communication control are provided. The mobile terminal includes a communication device, a communication interface and a signal detector. The communication interface detects connection to a transmission device. Upon detecting that the communication interface is connected to a transmission device, the transmission power of the transmission device is compared with the communication device. Upon the transmission power of the transmission device being greater than the communication device; a strength of a current signal measured by the signal detector is obtained. The obtained strength of the current signal is compared with a preset value. Upon the obtained strength of the current signal being less than the preset value, a control command is sent to control the transmission device to transmit signals for the mobile terminal. An electronic device with communication function is also provided.