If you dropped your HTC One X on the concrete and you cracked the screen, you are in big trouble. Let me say this again: YOU ARE IN BIG TROUBLE. I messed up my screen when I was trying to fix the WiFi connectivity problem on my own, and I interrupted some circuits on the digitizer. From that point on, I could never get to use the lower part of the screen. The image was perfect, but the digitizer was not responding at all. I said to myself: "no big deal, I'll just get a new one and that's it". Well, it's not that easy, because no GSM Service will glue the digitizer and the display perfect, and you'll get bubbles and all sort of strange stuff.
So what can you do?
Your only option is to buy a new complete display and digitizer setup. It's not an easy job, because every online store is packed with clones from china, that are not even LCD2. You will get poor quality display, with air bubbles or air trapped or pressure marks under the LCD problems.
This HTC Replacement display is the best product I was able to find in UK.