A method of operating a portable, foldable, and multifunctional mobility aid apparatus that assists a user in standing, sitting, and/or walking process. The apparatus has an integrated power source and is based on 4 wheels. Users can stand on it and drive it as an electric mobility device, or disable it and use it as a passive walker. The apparatus has a pair of supporting beams with adjustable width to be placed under the user armpits and support the user in standing up, sitting down, and/or moving around. The apparatus can be controlled by a control panel mounted on a pair of handles, and its functions can be controlled by the user with no need for help from another person. The apparatus can be minimized by a combination of multiple telescopic vertical minimization mechanisms and multiple folding mechanisms.