Okay guys, sorry for all the posts but i've finally managed to nail it. What everyone is experiencing with the blotches/lines/spots is an effect of AMOLED displays... the imperfections are called 'mura'

I found a website that produces some sort of special layer that prevents mura.... they give a brief description of (their) OLEDs

1) An OLED (organic light-emitting diode) layer that emits light.

2) A backplane, made of TFT (thin-film transistor) circuits that provide current to the OLEDs, thereby controlling their brightness.

3)Polysilicon backplanes don’t provide uniform current because of manufacturing non-uniformities. Without IGNIS technology, the TFT circuits will provide different current to the OLEDs, which results in lines, spots, and cloudy areas known as “mura”.

4) IGNIS AdMo-p™ technology uses a patented TFT pixel circuit and driving scheme to compensate for the non-uniform backplane. So the TFT circuits always provide uniform current to the OLEDs, even though the TFTs themselves aren’t uniform. This means the AMOLED display will always show smooth, mura-free images.

http://www.ignisinnovation.com/techn...o-p-technology



So fear not, your phone isn't faulty!!!! It's just a matter of getting a display that has less imperfections than others