As an AI language model, I can provide you with a basic example of how you might create a simple 3D game resembling Terraria using JavaScript and HTML. However, please note that creating a complete and fully functional game like Terraria within the limitations specified (single HTML file, smartphone operation, using pictograms) would require significantly more code and complexity. The example below only demonstrates a basic concept of a 3D game. Here's the code:
This basic example sets up an HTML canvas element and allows you to control a player character's position using touch events on a smartphone. However, this is just the foundation, and you would need to add further game mechanics, graphics, controls, and interactions to make it a full-fledged Terraria-like game.