The tacky suction cup didn't discolor or damage any dashboard or surface that I slapped it on. However, after an entire weekend with it attached to the soft dashboard of the Volvo C30, I noticed a slight circular indentation where the Mi-T Grip attached. This indentation disappeared a day after I removed the Grip, but users may want to take care to periodically check the condition of the material beneath the suction cup.
Your phone is held in place with a spring-loaded, C-shaped claw. The interior of the claw is covered in ribbed rubber to increase grip and protect your phone's finish. The claw has a few degrees of tilt articulation and can be freely rotated, thanks to its ball-joint connection to the mounting arm. The assembly can also be locked in place by tightening a ring on its back panel.
Inserting your phone is as simple as, well, jamming it in there. I found this to be tricky to do one-handed. However, after a few days of use, wedging the phone in and popping it out became second nature. My Samsung Galaxy Nexus fit nicely in the Mi-T Grip's grip, as did the Apple iPhone 5. Samsung's large-screened Galaxy S3 also fit, but I felt it approached the width limits of the gripping claw's range.
The Bracketron Mi-T Grip is a simple, effective, and -- perhaps most importantly -- flexible way of holding your phone in place while you navigate or listen to music when driving. I love that it sticks firmly to most dashboards, allowing me to mount my phone close at hand for quick interactions with navigation and audio apps, yet out of my sight lines when the vehicle is in motion.
However, at an MSRP of $29.95, I think it's priced about $10 too expensively. If you can find it on sale for closer to $20, the Bracketron Mi-T Grip would be a much better deal.