This is one of the best phones I ever owned. You could type nearly as fast on it as a traditional keyboard. It even had a scroll ball as well to act like a mouse. The things I would do for Google to implement something like this in a modern Pixel phone. I hate even trying to respond to people these days from my phone, because of how just how bad touch keyboards are in comparison.
Nokia 6800 and Samsung Galaxy S Relay were two of my favorite phones. The 6800 was an old, dumb phone, where the typical keypad unfolded to reveal a qwerty thumboard.
Relay featured a 5-line thumboard!
These were the only two phones where I bought a second after the first stopped working.