I have used this phone for more than 1 year now and I am still happy with it.
This is my first smart phone so I can not compare it to any other, but I find it speedy and powerful. The battery is good until you turn on wifi or use camera/video play back then it eats it up. Music playback with poweramp app is superb, sounds even better than my ipod classic, so really impressed. I can navigate to what Im after quickly with the customisable home screen. I just watched Tin Tin in 3D on the phone and it looked really good. Autostereoscopic is really cool and I hope the tech will move more mainstream in the future, never been a fan of wearing the 3D glasses.
My main issue with the Evo3D is the camera. I have a 3DS and really enjoy 3D photos, I think they really add something to an image. The issue with the 3Ds is the resolution of the images was very very poor. Although the photos on the HTCEvo3D produce 5mp pictures which is enough, the quality of the photos is not so impressive. You may not notice so much on the phone screen but when viewed on a computer monitor it does not hold up. The camera sensor does not capture colour well, and all images seem quite desaturated. They also suffer from colour bleeding issues (for example if I take a head and shoulder photo of a person in a park, there is a slight, but noticeable, green tint to the person). In conclusion the photos look good on the screen, in fact they can look quite amazing in 3D but, 2D photos look disappointing when viewed at a larger scale back on a monitor or TV, and I would not use this instead of bringing a digital camera to something of significance.
After a year of use it is still going strong and I have had no major issues. Dropped it quite a few times, but with a protective case on, and it has received no visible or functional damage, so build quality is good, and I consider it good value for the money still in 2013.