RAM makes inter-changable mounts for all sorts of devices, and features locking mechanisms. Used by professionals and law enforcement, RAM units are high quality, but often come at a premium price. One of the beauties of the RAM system is that once you have a window, dash or cup holder mount you don't need to purchase another one to change devices. You just need to replace the bracket that actually holds the phone. This would be great for switching a single device between two vehicles, or switching many different devices in one or more vehicles.
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