A charger plug for a smartphone is disconnected from its electrical cord and positioned on its back face with its electrical connector prongs extending upward, then the smartphone is oriented with a side edge facing generally downward and placed on the charger plug on its front face between its electrical connector prongs for use as a stand to stably support the smartphone for use. When standing on the charger in this way, the smartphone can be used for general purposes such a watching videos or it can be used particularly with a software application that automatically controls the smartphone's vibrator to induce hands-free controlled rotation of the smartphone. In typical embodiments, the smartphone and the charger-stand rotate together to compose a panoramic photograph, or for video-conferencing, gaming, or other uses.