When using a keyboard with Ps Mobile the keyboard isn’t mapped to convert to a hand tool for moving the canvas. This must not be intentional. Moving the canvas is so quicker vital to using a keyboard fully with any physical keyboard and prevents me from stopping my workflow.
You can move and pan the canvas with any tool selected. If you encounter unintentional tool use with that you can type H to deselect the current tool which allows finger gesture use to move/pan/zoom with out the risk of applying a tool.