At present, mainstream projectors all support mobile phone screen projection, and the common screen projection method is wireless screen projection. In addition, you can also install a split screen device on the projector, and then connect the split screen device with your mobile phone to project the screen. Some projectors also support wired screen sharing. Usually, the data cable connects the mobile phone and the projector to project the screen of the mobile phone.

The projector cannot work continuously for more than four hours.

If the projection bulb works continuously for more than four hours, the imaging system inside the projector will emit heat and accumulate, which will lead to the rapid rise of the temperature inside the projector.

Because the inner wall of the projection bulb will crystallize at high temperature, white spots will appear on the shell of the projection bulb, and the crystallized part will block the emission of light, which will lead to the abnormal temperature increase in the local area of the shell of the projection bulb and further expand the crystallized area, which will lead to the rapid attenuation of the brightness of the projection bulb and the easy explosion of the bulb.