I tried unbranded ones and found they were too thick and curled at the edges. The genuine HTC ones come in a pack of 2, are thinner and fit perfectly, BUT being thin they curl very easily which makes getting them on perfectly a pig of a job. Usually I stick one end down and then blow sideways across the screen to remove tiny hairs and dust as I stick the rest down, but the HTC protectors are too flimsy and can't be held at the edge. I eventually got mine on with only a single bit of dust underneath but its off the screen and near the back button. I've always wondered why phones can't come with a screen protector pre installed in the sterile environment of the factory.