まりー 4 Stability is so good. and can be use for my iPhone 11 pro. Both horizontal and vertical position, charging is fine. I am not so particular with speed, so I didn't check.It might be my misunderstanding that I thought it is magnetic but it is not. So I hope, product like this can be develop and include magnetic.Stability is already good. Having it magnetic it will add more stability and convenience. Besides, being magnetic it can be centered automatically and might not be needed for pull down bottom tray.