Drill through tiles in easy steps. Let us first understand that drilling anything through tile is difficult than concrete. The reason is obviously, tiles are brittle and crack easily. But you can drill through tiles with care.  Usual Drill bits won't work on porcelain tile. The tile breaks if you try to drill it because there is too much pressure. You need to use a special bit ( which are mentioned in the article) that drills the tile. You can use masking tape to mark where the hole is going to be so you know where to drill, and the tape will give the drill bit something to hold on to.