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The effects of using mobile phone inside both fully and partially enclosed metallic elevators on the antenna performance and the human exposure have been studied by using FDTD numerical method. It has been found that the antenna performance is degraded in all the enclosed metallic elevators studied due to the low radiation efficiency. Results have also shown that, for the human exposure, the electric field strength and the peak SAR of mobile phone user in the fully enclosed metallic elevator is the largest due to the resonance effect.