Sorry, can't take pictures, no (anywhere near decent) camera. :-(
After playing the entire modern combat 4 campaign, I still have not only not noticed any issues, but not even any drawbacks whatsoever. The sticks are great, screen is great, battery life is incredible, speakers are great, performance is perfect (just set performance governor once in setcpu), it's super solid, dpad works like a charm, so do face and trigger and android buttons, *both* joystick drivers work as they should, wifi is okay, microsd and headphone and usb slot work fine, etc.
It's a marvel of engineering!
I will test half life later tonight, or maybe in a few days - I really want to go watch Machine-Doll wa Kizutsukanai right now after all that hard work finishing all of mc4 in one go. (~7 hours :O great game btw if you like COD!). It's apparently a great animu!