Tech21 anti-yellowing Evo Clear phone case

Whether you’ve bought a new device from Apple, Samsung or Google, we know you’ll be desperate to show off the manufacturer’s original design – especially now there are so many colours to choose from. To do this, you’re going to want one of Tech21’s clear phone cases. The advanced UV resistant agents – found in everything from iPhone 15 cases to S24 cases – help keep these cases clear for the lifetime of the device.

Why do phone cases discolour over time?

We’ve all seen those grubby, once-clear phone cases that look in need of a good scrub but have you ever wondered why this discolouring happens. The answer lies in the types of materials used. The plastics regularly used to make clear phone cases are negatively affected by consistent exposure to UV rays which, when combined with oxygen, spark off a process called photo-oxidation that leads to unsightly – and, let’s be honest, ugly.


We add intelligent UV resistant agents that are proven to provide ultra UV resistance into all of our clear phone cases during the design process. We select these materials as they contain the optimum properties to guard against UV rays and then, just to be sure, we add even more extra-special additives to ensure the cases stay clear. We put these materials through a rigorous testing process which includes accelerated weathering that tests just how resistant they are.

While many of our competitors cut corners and take the easy option – one that finds their cases discolouring before they even get into customers’ hands – we ensure the materials used in our clear phone case range offer total transparency for the lifetime of the device.

You’ll find this ultimate UV resistance in our Evo Clear cases, Evo Sparkle cases and Evo Lite Clear cases.