Disappointing Product, broke very easily
Firstly the screen protector does not affect the quality of the image when viewing the screen face on. It is very clear and sharp, unlike other privacy screen protectors I have used in the past. It also does not seem to affect much the sensitivity of the interface with the screen so you can type as before. Thus it does not reduce the user experience or interface with the phone. However, the level of privacy it affords is minimal, especially with the screen brightness turned up or when used in a darkened room, but this can be expected. It is only able to block peering eyes from the sides, but when viewed from above (or below) the main viewing angle the light is not polarised and can be seen as normal. This can be likended to when using on a train, if sitting down, those sat to you left or right would find it difficult to view the content in your screen, but those standing up would see everything you could too. There are other screen protectors on the market that offer this 4 axis protection.
Perhaps the most important thing though for this item to most users is it's functionality as a screen protector and this is where it unfortunately is very poor. After only one week with the screen protector maticulously placed as per their fitting instructions, the phone took a small 30cm drop onto a laminate floor. The screen protector cracked and being made of glass this has subsequently spread across the entire face of the phone and now continually 'pops' off. This is very frustrating as I would have hoped that this would have easily coped with such an insignificant bump. As now the screen protector hardly does it function at either protecting the screen or providing privacy with it reguarly falling off. It is worth mentioning that i also have a Spigen Liquid Air case attached to this phone that also helps protect this phone from damage and that this case does not come into contact with the screen protector at all.
I believe the bodyguardz does come with a free lifetime warrantry, so hopefully they will sort me out with a new one soon and I will have better luck next time.