I be so excited to get this projector , but I be on my second one thus far , and needless to say , I be not happy at all . the first qumus I receive work great ... for one day . after that , it do not matter what device I plug into it -lrb- blurry player , iPad , iPhone , xbox -rrb- , or in what order I plug the device in , or in what order I turn on the devices\/qumi , or which hdmi cable I use to do it -lrb- I purchase several and try they on to no avail -rrb- , I repeatedly and consistenly receive the `` no source found '' message . needless to say , I be not pleased , so I send the unit back and request a replacement from Amazon -lrb- who have be nothing but great throughout this horrific process btw -rrb- . Guess what , I receive the replacement in record time . Guess what , same hdmus handshake issue . these unit be either not build well or Vivitek 's quality control be abysmal . bad customer service as well . there be get to be something better out there . very dissapointed .