【2021 UPGRADED WIFI CONNECTION TECH】: DBPOWER RD821 wifi mini projector is compatible with IOS and Android systems. Two different ways for you to mirror the phone: 1.Connect the projector with your home wifi in the setting menu and then mirror your phone. In that way, you can use your wifi other than the hotspot to watch video 2.Directly connect your phone with the wifi of the projector and then mirror your phone. Even in a no-wifi environment, you can also mirror your phone without cable. 【7000L HIGH BRIGHTNESS &3500：1 CONTRAST 】: DBPOWER RD821 Mini Projector is native 1280x720P, 7000L, 3500:1 high contrast and 16:9/4:3 aspect ratio, which is 60% brighter and clearer than other equivalent projectors. With zoom function, it can shrink the image size from 100% to 50% using the remote without moving the projector. The Mirror display function doesn't support protected videos, because of copyright. (Netflix, Amazon Prime Video, and Hulu). 【200'' GIANT SCREEN & BUILT-IN SPEAKERS】: The DBPOWER RD821 Video projector will release a 40''-200'' display with projection distance 4ft-19.6ft. The wireless projector has built-in 3W dual stereo speakers with an SRS sound system that provides a great auditory sense experience without external speakers. Portable Projectors are equipped with an innovative cooling system with heat dispersion, as well as a noise suppression technology that cuts fan sound in half. 【MULTIMEDIA PORTABLE PROJECTOR】: With a customized carrying case included, you can conveniently carry and storage this DBPOWER RD821 WIFI Mini Projector. This home projector equipped with HDMI/USB/AV/VGA/TF Card ports to meet your needs for Headsets, Laptop, DVD/VCD players, USB disk, PS3, PS4, Computer, Phone, etc.