I bought this product for a trip to the opposite coast, and it worked fine in CA for 10 days.  Returned home, and tried to mount it on my Jeep 2010 Grand Cherokee, which has almost smooth (very slightly textured) vinyl interior.  Forget it, this sucker (pun intended) would not stick.  Tired maybe 15 different approaches.  Called the company.  Tried everything they recommended.  Still would not stick.  Waited until warm weather in April.  Called company to get a new sticky disk (that only took 4 calls over 6 weeks, so customer service is as bad as the product).  New sticky disk would not work.  Finally used instant contact glue to adhere disk to dash, then the mounting unit would adhere for maybe an hour before falling off.

I really wanted this to work because the holder is well designed and will hold an iphone with a protective case, and it is easy to adjust the mount to a good viewing angle.

Forget it.  I finally threw the thing away and will seek another solution.

Be warned:  unless you have a perfectly smooth, hard, flat surface to which to mount this, you may end up as frustrated and disappointed as I am.
I bought this product for a trip to the opposite coast, and it worked fine in CA for 10 days. Returned home, and tried to mount it on my Jeep 2010 Grand Cherokee, which has almost smooth (very slightly textured) vinyl interior. Forget it, this sucker (pun intended) would not stick. Tired maybe 15 different approaches. Called the company. Tried everything they recommended. Still would not stick. Waited until warm weather in April. Called company to get a new sticky disk (that only took 4 calls over 6 weeks, so customer service is as bad as the product). New sticky disk would not work. Finally used instant contact glue to adhere disk to dash, then the mounting unit would adhere for maybe an hour before falling off. I really wanted this to work because the holder is well designed and will hold an iphone with a protective case, and it is easy to adjust the mount to a good viewing angle. Forget it. I finally threw the thing away and will seek another solution. Be warned:  unless you have a perfectly smooth, hard, flat surface to which to mount this, you may end up as frustrated and disappointed as I am.