You can find the Text tool in the Brushes menu, which is accessible from your Tool Wheel.

  1. Open the Brushes menu by tapping an active tool or double-tapping an inactive tool on your Tool Wheel.
  2. Scroll through your brushes to find the Text tool, marked with an "A" icon.
  3. Tap the Text tool, exit back to the Canvas and then tap anywhere on the canvas to open the keyboard and start typing.