Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Maybe I have a defective one or something but is there anything else besides plugging it in I need to do on a nexus 4? (dl a screen mirroring app?)
Document: Its very to use,  just plug it into your Nexus 4 phone, and connect the HDMI cable into your HDTV, and will mirroring to TV. Couldn't be more simple. It worth to buy!
At one point it worked for more than 20 minutes but it acted up again and just became intolerable. I've only had it for a day and i'm already returning it.The only good thing about it is that I received the device in 1 day instead of 2. That is the fastest anything has ever shipped to me. But sadly the device didn't work. I don't know if the problem occurs with all devices but it definitely doesn't work consistently with the Nexus 7 (2013).
Whenever i connect my nexus 7 to my lg tv, it only transfers the sound. But i couldnt see anything on the screen!! !
I connected this to 2 tv sets with 3 different hdmi cables and the best I would get would be like 3 seconds of mirroring and then the No Signal screen saver. I'm really bummed and would love to know a cable that actually works. I am obviously not alone in having problems with hdmi with the 2013 nexus 7.
I have a Nexus 5 and a recent LED HDMI TV and the adaptor works flawlessly. Slimport itself is a cool technology that enables screen mirroring without lag, opening up new uses for a mobile device, as well as making it easier to do things that with other technologies such as Miracast or Chromecast are either slower and/or more limited. The only major drawback to Slimport is that it requires a wired instead of wireless connection.
Well, when I tried it out with my 2013 Nexus 7, it showed up pretty good... for a few seconds. Well, sorta good... There would be these horizontal lines that appeared, as if a horizontal scan line were glitching.Then, whenever I did something unusual, like try to swipe to another screen or play a video, it would inadvertently just stop working.
It's pretty neat. I would recommend getting yourself an app that controls screen orientation  so that you don't have to view in &#34;pillar&#34; mode when on your home screen.
Once, while trying to swap HDMI cables I did get a black screen and a "input not supported" error - but I haven't been able to recreate that condition (even with the same cable).Bummer.Update:  I've since purchased a different model of Slimport for my Nexus, and it worked. The picture was a little snowy, so I have to go through all of my cables again until I find one that it likes - but it's hopeful.
I ordered this to use with my Nexus 7 (2013) running Android 4.4.2. I read many reviews that said it worked for my device but they were wrong.Problems I had with it.1. It didn't receive my device for over a minute.2. Screen constantly flickered.3. Audio randomly stopped.4. Slimport stopped displaying device after 3-5 minutes of use consistently. (Especially when watching videos. )I tried disconnecting and reconnecting the device several times.
Product works great with my LG G2, definitely recommend! Great customer service, i had recieved a defective device and i was sent a new one within the week.
Answer: We have issues with it working all the time too. We'll be watching something and all of a sudden the screen goes black. We unplug everything and reconnect everything and it usually works than. Sometimes we end up having to do this multi times and just end up trying another time. Very frustrating!