I tried several options along the lines of Carlinkit and here is what I learned. I can post pics if anyone thinks something would be helpful :
1) My primary reason for this was full screen android auto - its rediculous that it doesn't work, RAM Uconnect is based on Android and other platforms its actually Carplay that struggles with different aspect ratios. Some boxes reportedly do not work well, some do, after looking at them I believe it comes down to the processor in them (newer or higher end have better video adapters) and the Android OS version # (boxes typically are several generations behind and using software that is "customized" mostly via rooting, android customization apps, etc
2) Both boxes I bought worked fine - one is the CB6 (you will find many variants on Amazon with one days shipping) and the Ottocast E2
- they both were fine with displaying horizontally, and fine with split screen working correctly and not trying to split it vertically (it just looks like you epect it to)
3) The CB6 has a slightly newer processor and Android OS version, so I expected to like it best, but I realized the software is so janky on stuff like this, their essentially like mass produced home made walmart android tablets, that the Ottocast was better for me because I ended up liking using it as an actual device, rather than just a way to get Carplay / Android Auto access, and the Ottocast devices are so popular that the software is a little older but more adapted to the hardware - its just stabler and smoother.
4) I would rate the Ottocast at or higher than the RAM software experience, except with alot more features and a much much better sim card / hotspot signal, and I would rate the CB6 just a little below the RAM software - perfectly usable, but better off as a way to get android auto fullscreen / watch videos while driving than as a full featured device
5) Both had some weird chinese stuff, and some apps with limited function, but both were easily customized to a new launcher and new widgets
6) I recommend anyone experimenting with this either google alternative launchers ( I liked a few others like Vivid) just start with Nova and add widgets to avoid compatibility issues at firsthand