I have a few users of my car that are less than careful with putting phones into the mounts and taking them out. The auto lock when you put the phone in and dual release negate some of the abuse this will take I'm sure. Not sure how long the spring will last, but for now, I won't have to re-adjust the whole thing the next time I'm in the car because someone else has practically ripped it out of the vent because they couldn't be bothered to find the release...... /rant.