Mobile phone structure capable of selectively mounting a camera lens

A mobile phone structure includes a housing and an optical assembly. The housing defines a substantially inverted cone-shaped recess at its bottom that accommodates therein a CMOS image sensor being electrically connected to a control board within the housing. The optical assembly can be constructed of a wide-angle lens module for providing a wider angle of view, a telephoto lens module for bringing distant objects closer, a close-up lens module for monitoring miniature objects, or a filtering module for reducing undesired light. The mobile phone structure allows a user to select a specific optical assembly and mount it into the recess of the housing according to an application requirement. As such, the photographing or videoing function of the mobile phone structure can be significantly increased.