[MTCD  Android Head Units Q&A] SkyBeam2048:
Well, this won't be very helpful. I currently own a Subaru Levorg and got something like this here. But it's car specific shaping, no standard 2-DIN form factor. Also it didn't really fit my cars connectors so I fixed it by soldering my own cables. But it's a standard PX5 unit from KLD manufacturer.

No Major issues with it, only minor. Not counting the wrong cable harness as this was an issue of my car not being in any supported list.

So I am mainly suffering from standard PX5/ROM limitations. For example Google Maps in latest version hangs if terminated by auto-shutdown. There is a fix available here but it requires root access to clean the cache of another application.

Also my unit has some audible noise level which is noticeable at low volume levels. Not really an issue while driving but still annoying. The noise seems also to be dependent on touchscreen input. It's a sign of inappropriate filtering inside the unit.

My unit also suffered from very bad WLAN reception initially but this was clearly related to the bad antennas mounted to my device. I did a post about my modifications here. In addition I have meanwhile added some good WiFi Antennas directly into the dash center display which further improved reception.

These units are also known to cause slow WiFi when Bluetooth devices (phones) are connected. In such case the WiFi transfer rate drops to almost 0. Disconnecting Bluetooth helps.

Also there is a know problem called "bluetooth echo" which appears on most MTCD units during bluetooth phone calls. There is a fix available here (again, requires root). For me this is not so important as I don't use Bluetooth calling in my car regularly.

Some devices seem to have a really bad integrated microphone. Attaching an external mic usually helps. My car has ana amplified microphone built-in which I used. It works pretty well. I am not using the built-in microphone from the head unit therefore.

There seem to be unresolved issues about mounting portable mass storage devices. The re-mount after resume seems to take several minutes. Can't comment on this really as my unit only has the GPS card and I rarely use USB/GPS storage to store some music currently.

I also do have DAB+. It works pretty well. I initially bought my head unit with a DAB+ box like this (black metal box with 8-pin proprietary connector). However this never worked and the DAB+ app did not recognize it. Then I went for a simple Joying USB DAB+ receiver like this. This worked very well. Except my antenna setup with stock amplified FM antenna and splitter did not work very well. My recommendation here: Don't waste your money on splitters and amplifiers, get yourself a decent DAB+ roof antenna, install it and you will be happy. I spent lots of time on this as I didn't want to touch my rooftop antenna. Finally I was bout to trash DAB+ as it was just no fun with the bad reception. Replacing the roof antenna changed this completely. I have mounted the Antennentechnik Bad Blankenburg (ABB) 3785.01 with FM, GPS and DAB+ including 20dB gain on DAB+ band. Since then I have very stable reception and I am happy with DAB+ and never used FM again.

There was another issue with the DAB+ application included with my head unit. Always when it was sent to the background the music playback was stuttering. So the application only works when in foreground. Very annoying. However for this there is a modded/fixed version available here.

Hmm, this looks all very complex and many issues. But I am still happy with it. The Android HU allows me to run my own software or use anything available on the play store or even develop some custom solution myself. Currently I am mainly using it for DAB+ playback as well as offline navigation using "Here WeGo" or online navigation using Google Maps.

I am still hoping for the sources to be released so we could make these units a thousand times more useful - but this might remain a dream.