I've struggled and I mean really struggled with a number of screen protectors over the years and in spite of numerous attempts, I've rarely achieved a satisfactory, bubble/dust free application.
When I bought my Ace 2, earlier this year, I was determined to have a case and screen protector, at the ready.
To be honest, going by my history and experience with these things, I "cheated," by taking the screen protector to the Carphone Warehouse, where they normally fit their own touted brand, the Zagg Invisible Shield (don't get me started on that! ;O)but are more than happy, for a small fee, to fit other makes.
They hadn't heard of this particular brand, but they fitted it in double quick time and the installation was perfect.
8 months down the road, there were a few marks on the protector and I took the 2nd Media Devil Protector along to the same place and got it fitted, yet again perfectly.
I'm so chuffed with this product.
You get two protectors, for half the price of some of the "better" brands out there and, for me, it still works out cheaper to pay £6, or so to have it properly fitted by people who do this sort of thing all day long than to faff about and end up totally frustrated trying to fit it myself.
I have, since having had the 2nd protector fitted, ordered another pack, which, even at this time of year, arrived in 24 hours!
That way, I have a couple on hand and in reserve, should I need to change the protector in the future.
Very impressed with the product and the company and would recommend this product.