Worked at least a tiny bit with my S8 but had to get a new phone at the spur of the moment so I got an S21 FE, which comes with ANDROID AUTO FACTORY INSTALLED. I'm thinking "cool, they may have this dialed now and maybe it might actually work." Nope. Works great for 5 to 10 min the first time you plug it in then disconnects and tells you to reconnect over and over after that. $1500 wasted on truck system and $1000 on phone. Only fix is spending min of $1000 to change one. YOU'RE BUYIN RIGHT???😡