Method for Controlling Specific Absorption Rate of Wireless Communications Device and Wireless Communications Device

A wireless communications device, comprising:

• a first antenna configured to transmit a radio frequency signal;
• a second antenna configured to transmit the radio frequency signal, a distance between positions of the first antenna and the second antenna in the wireless communications device being greater than a preset spacing;
• a radio frequency circuit communicatively coupled to the first antenna and the second antenna;
• and
• a processor communicatively coupled to the radio frequency circuit and configured to:
• transmit, using the radio frequency circuit and the first antenna, the radio frequency signal;
• and
• instruct the radio frequency circuit to stop using the first antenna and to start transmitting the radio frequency signal using the second antenna to enable the wireless communications device to meet a specific absorption rate (SAR) standard when transmit power of the first antenna is greater than first preset power and a first time period elapses, the first preset power being equal to or less than transmit power corresponding to an SAR upper limit value specified in the SAR standard, a start moment of the first time period being a moment when the transmit power of the first antenna is greater than the first preset power, and a length of the first time period being less than test duration of an SAR test specified in the SAR standard.