Skip to main content

‘Liquid glass’ promises to protect your phone from bumps and scratches

pick good case cover rsz protectpax invisible screen protector 1
Image used with permission by copyright holder
Editor’s note: Since this article’s publication, IndieGoGo has flagged ProtectPax’s crowdfunding campaign for review. We suggest holding off on pre-ordering for the time being. 

If you’re the type that worries about wayward car keys or nail files scratching your pricey smartphone’s screen, fret no more. ProtectPax, a new project on IndieGoGo, is a self-described “liquid glass” protector that claims to strengthen any display.

Recommended Videos

It sounds almost too good to be true. ProtectPax’s crowdfunding page describes it as a “nano protector” pioneered by titans in the aviation and aerospace industries. Titanium dioxide nanoparticles in the gel fill microscopic valleys on your smartphone’s screen, effectively reinforcing it against bumps and bruises.

Please enable Javascript to view this content

“It’s as hard as sapphire or ruby and acts like an optical filter,” the ProtectPax team says. “Your screen [will be] more uniform than when it left the factory.”

Applying it is relatively easy, apparently. All you need do is wipe your smartphone’s screen dry, rub ProtectPax across the surface with an included sealing cloth, and wait ten minutes until the gloss turns “shiny.” Once that’s done, the screen’s ostensibly protected from scratches, cracks, and even falls.

ProtectPax ranks 9H on Mohs Hardness Scale, which is higher than a knife blade and steel file. It lasts up to 365 days, and as an added bonus, it protects against electromagnetic radiation and improves touchscreen functionality.

ProtectPax claims it’s good for more than smartphones, too. The team’s tested it with all manner of devices, including smart watches, regular watches, eyeglasses, TV screens, GPS navigation systems, laptops, eBook readers, and digital cameras.

The idea of a liquid screen protector just as effective as tempered glass may be difficult to wrap your mind around, but ProtectPax isn’t the first. Kristall, a liquid protector from Malaysian company E-Mark Global trade, shields screens with a layer nano-particle coating that gives screens a gloss finish, makes them a great deal less prone to fingerprints, smudges, and greasy smears, and protects them against objects up to 9H.

In a demonstration at Mobile World Congress in Barcelona, an intrepid Digital Trends reporter saw a Kristall-smeared phone successfully deflect scratches from scissors and keys. Assuming ProtectPax measures up to the competition, it will provide a welcome alternative to the annoying glass and polymer shields that require you squeeze every last air bubble out from beneath the protectors’ surface.

Packs of ProtectPax start at $40.

Kyle Wiggers
Former Digital Trends Contributor
Kyle Wiggers is a writer, Web designer, and podcaster with an acute interest in all things tech. When not reviewing gadgets…
Don’t buy overpriced used iPhones with TikTok installed
Exploring TikTok's STEM feed on a phone.

If you want to download the TikTok app onto your iPhone and you live in the U.S., you’re currently out of luck due to an ongoing ban. Because of this, some would-be entrepreneurs are attempting to make a quick buck on eBay by selling iPhones with the TikTok app pre-installed.

People are attempting to sell used iPhones “Unlocked with TikTok App” on the site for as much as $50,000, as first noted by Wired. To make these deals even less appealing, some of these listings are for iPhone 12 Pro Max models first released in 2020, and not even the latest iPhone 16 models.

Read more
T-Mobile crushed its rivals in this important test
A person playing a game on the Asus ROG Phone 9 Pro.

In the U.S., the top carriers don't offer the same network performance. One carrier has significantly outperformed the others over the past six months, according to data collected in network and connectivity expert Ookla's latest "Speedtest Connectivity Report." The report, which covers data collected between July and December 2024, found that T-Mobile, the third-largest carrier in the U.S., has emerged as the clear leader in overall performance. The differences are striking.

Ookla reports that T-Mobile provides media download speeds 120% faster than its closest competitor, AT&T. Verizon, the largest carrier by subscriber count, ranked third. These speeds are enough for Ookla to conclude that T-Mobile offers the best mobile gaming experience.

Read more
Samsung Galaxy S25 Ultra vs. iPhone 16 Pro Max: Flagship throwdown
Samsung Galaxy S25 Ultra vs. iPhone 16 Pro Max.

It’s a new year, so it’s time for Samsung to release new phones. For 2025, this includes the Galaxy S25 series. Let’s look at how the top model, the Galaxy S25 Ultra, compares to Apple’s iPhone 16 Pro Max.

Though we have not yet spent time with a Galaxy S25 Ultra, we still know much about it to begin the comparison. Here's how the Galaxu S25 Ultra compares to the iPhone 16 Pro Max, at this early stage.
Samsung Galaxy S25 Ultra vs. iPhone 16 Pro Max: specs

Read more