If the ambient light is more gentle, even the results from the side aren’t so good and passers-by might be able to make out what’s happening on the display, albeit through a hazy fog and with inconsistent visibility across the screen area. If you view from above then there’s simply no protection at all. Weirdly, this protection only applied to viewing from the side. However, in ideal situations the screen appears black to any viewing angle other than around 30° outside of an eye position straight on to the screen. However, this relies on the ambient light in the room also being fairly strong – something that’s not always the case on public transport, for example, where these things are likely to find most use. The Tech Armor 2-Way Privacy Screen Protector blocks viewing from angles other than straight on. It certainly helped when using the phone outdoors in the few hours of bright sunshine this Summer offered, however. This was extremely welcome, although if you simply can’t bear any kind of light bouncing off the screen, perhaps for medical reasons, then it might not be enough.
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The NuShield Triple A Antiglare Protector didn’t exactly stop bright windows reflecting on our phone screen but instead diffused strong reflections so that they weren’t so noticeable or clearly defined. It isn’t just phones, tablets and laptops that can benefit from screen We also noticed an interference overlay, like a very slightly badly tuned telly from the days of the analogue signal. Both the privacy and anti-reflective protectors we tested introduced a shimmering look to the screen when looking at it straight on, a little like the contents of the screen are in the very early stage of being beamed up à la Star Trek. These are microscopically etched or coated to achieve their goals, and this affects what you see. This also helped our blood pressure level because at most we had simply to peel back the protector a little while applying if it looked like an air pocket was forming.Īlas, it wasn’t such happy news with the screen protectors that offered additional features like privacy protection or protection against reflections. Indeed, because these protectors are thick we were able to easily apply them without air bubbles appearing beneath the surface of the protector – something that can’t be said for the cheap thin screen protectors that cost pennies. Incidentally, touch sensitivity didn’t appear to be affected in the slightest even with the thickest screen protectors we looked at. This didn’t seem to work any better than the standard oleophobic coating of the screen, but as such was a welcome addition. Another benefit of their higher asking price was that all the examples of protectors we looked at were oleophobically coated, which means they’re resistive to finger grease and oils. This also meant that the screen protectors were just as shiny and reflective as the screen itself, however, which wasn’t as welcome. We looked long and hard to see if they affected color reproduction or sharpness on our test iPhone 6 Plus, even employing a jeweler’s magnifying loupe to view individual pixels, but couldn’t spot any difference. Unsurprisingly, the clear screen protectors were essentially invisible once applied. Again, though, we question any desire to compromise the typically good color reproduction of a mobile device. This filters out some of the blue light from a screen, supposedly reducing eye strain and helping to prevent sleep patterns being disrupted by screens – a very modern problem. Do They Work?Ī fourth intriguing additional optional feature is anti-blue light filtering, as offered by the QDOS OptiGuard Glass Blue. Essentially, they work on the same principle as the mirror film often applied to car or office windows, which are reflective only if the non-mirrored side of the coating is darker than the exterior. However, such screen protectors only act as a mirror when the screen is switched off and entirely dark.
This is ironic when you consider that many of us pay a premium for the likes of IPS displays, designed to make for the maximum possible viewing angle, but when using devices on public transport it can be a Godsend.Ī third type of additional feature is a mirrored surface, allowing the phone to be used to adjust hair or makeup.Īgain, this is somewhat ironic considering most display coatings attempt to minimise reflections.
Some screen protectors attempt to offer privacy by radically restricting the viewing angles of the LCD display of your phone, tablet or laptop so that you can only see stuff if you’re looking straight at the screen.
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