The invention provides a smartphone with an
OLED display screen. The smartphone comprises an
OLED display screen and a mainboard, wherein the mainboard comprises a
metal shielding cover, an SIM card slot, a circuit board and a
carbon nanotube heat dissipation film, the
metal shielding layer is arranged in the middle of the circuit board, a processor and a memory card are arranged inside the metalshielding cover, an SD card slot is formed in the lower part of the other side of the processor, a
microphone is arranged below the circuit board, a speaker is arranged on one side of the
microphone,a camera is arranged at the upper part of the circuit board, a
flash lamp is arranged below the camera, a
volume control key is arranged on the edge side of the circuit board, a power switch is arranged on the top side of the circuit board, the SIM card slot is formed below the power switch, and the
carbon nanotube heat dissipation film is arranged on the back surface of the circuit board. According to the scheme of the invention, the
radiation amount of the mainboard of a
mobile phone can be reduced to a range that can be tolerated by the
human body, the body health of people cannot be endangered, the electrostatic interference between various chips can also be prevented, the heat can be effectively dissipated, and thus the
mobile phone can run smoothly, and by adopting the
OLED display screen, the colors of the smartphone can be more abundant.