Using this bike tie is a breeze. First, find the bar you want to attach it to, whether it's a bike handlebar or another type of bar. Then, open the attach system and place it around the bar. Next, pull the strap tight until it fits the bar snugly. After that, put your 4.7 - 7.2 inch smartphone into the holder. Make sure it's securely in place. When it comes to maintenance, since the silicone is dirt - resistant, you can just wipe it clean when it gets dirty. If it's really dirty, you can wash it with water and let it dry. Remember to check the tightness of the strap regularly to ensure your phone stays safe while you're on the move.