A mobile communication device includes a main body, a cover body, a first lens module, at least one positioning hole, a second lens module, at least one resilient positioning member and an image sensor. The cover body is slidably mounted on the main body between a first position and a second position. The through hole is defined in the main body and configured for receiving the first lens module. The at least one positioning hole is defined in the first lens module. The second lens module and the image sensor are received in the cover body. The at least one resilient positioning member is defined in the cover body and engaging in the positioning hole at the first position. The image sensor is configured for detecting light from the first and second lens module at the first position and light from the second lens module at the second position.