Phase
MovementRequires injection
Phase flattens your collision box so blocks have nothing to stop, letting you walk through them. Bedrock resolves movement against the box rather than the model, so a box with no height passes through.
Settings
Section titled “Settings”Box Height
Section titled “Box Height”How tall to leave your collision box, in blocks, labelled Box Height. 0 is the whole point and the default. The slider exists because a box with literally no height is something a game can decide it dislikes; half a block is still short enough to fit under most things you would want to walk through.