The highest display resolution of the 49UF7787 is 4K Ultra HD. That's over four times the display resolution of a Full HD television, which is the most frequently found display resolution. 4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
This television's display resolution (4K Ultra HD) is actually the best display resolution amongst all TVs of a comparable age and spec to the 49UF7787.
Amongst similar types of television the worst display resolution is HD Ready.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
Other 4K Ultra HD TVs currently available that you might also want to consider include a cheaper television such as the UN48JS8500, or the UE40JU6440 (£729.99) both from Samsung or you might consider a better rated television such as the Panasonic TX-40CX700.