The present invention discloses a SAR radiation-free mobile terminal body, a SAR radiation-free external communication body and a SAR radiation-free mobile terminal. The SAR radiation-free mobile terminal comprises the SAR radiation-free mobile terminal body. The SAR radiation-free external communication body is disposed outside the SAR radiation-free mobile terminal body and is connected with the SAR radiation-free mobile terminal body through optical fibers. The SAR radiation-free external communication body comprises a communication module connecting with a communication base station without affecting the compatibility and normal radiation power of communication equipment; inter-conversion between electric signals and optical signals is realized through a photoelectric conversion module. Signals are transmitted between the SAR radiation-free external communication body and the SAR radiation-free mobile terminal body through optical fibers mainly made from non-metallic materials, so that conduction of microwave radiation is avoided, thus, effectively avoiding the harm of mobile phone radiation to human bodies.
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