Hi not sure if correct place in forum but its too hold my iphone 6 so hope this will do

I bought 3 x logitech Drive car mount's last week as pb had a special and 1 for each vehicle seemed a good idea

But i cannot get them to stick to anything including the supplied disk, they just fall off on there own or as soon as i touch them
have tried wetting the disk before sticking and also heating the plastic to make it more flexable.
Anyone had any success or problems.
In the packaging it talks about how to remove if it wont undo, i wish


Cheers Sleepy