A plurality of icons are displayed on a touch-sensitive display. In the present method, a fluorinated silicon source, an optional fluorine source, an optional carbon source, a hydrogen source, and an oxygenator are used as the reactant gases. The pair of first hooks and the pair of second hooks of the electronic device are capable of respectively inserting into the first slot and the pair of second slot of the mobile phone so as to securely attach the electronic device to the mobile phone. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc.