Not quite strong enough for a Galaxy S9+

One is not quite enough for a Galaxy S9+. It does not drop, but it leans over and ends up facing the floor. However, it holds an iPhone 7 without any issues. The vent grips are very well designed. When you lock the lever down, it will not let go until you release it. Here are some other considerations; if you have a device that has wireless charging, this will interfere with that. The adhesive they use on the phone side mount is incredibly strong. It can be removed using rubbing alcohol and strong fishing line (I used 80lb test) dental floss was no match for it. But that said, there is no need to worry that the adhesive will let go. I think 2 Steelie's would have been great to hold the S9+, but cost prohibitive and prevent the use of wireless charging.

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