Fluorescent microscopy has become very important in recent decades with the development of a wide range of fluorescent markers. The idea here is to engineer fluorescent compounds that would selectively bind to the target cell or bacteria or protein. Detection of that fluorescence can provide significantly higher sensitivity and selectivity than the regular bright field microscopy. The Ozcan Research Group has developed this fluorescent microscope as an attachment to a cellphone. It does not use lensfree holographic technology but it is made possible by innovative engineering and the usual focus on low cost, simplicity, and portability. It has a very wide field-of-view of 81 mm2 allowing significantly larger sample volume than conventional fluorescent microscopes.