What Causes Phone Screens to Crack?

Smartphone screens are stronger than ever, but cracked screens remain one of the most common phone problems.

Even phones built with reinforced glass can still break if dropped at the wrong angle or onto a hard surface.

If you’ve ever dropped your phone and watched cracks spread across the screen, you’ve probably wondered:

What actually causes phone screens to crack?

Understanding why screens break can help you avoid future damage and protect your device from costly repairs.

In this guide, we’ll explain the most common reasons phone screens crack, how to reduce the risk of damage, and when to visit a ZAGG Phone Repair location if your screen breaks.

1. Hard Surface Drops

The most common cause of cracked phone screens is dropping the phone onto a hard surface.

Surfaces such as:

• concrete
• tile floors
• asphalt
• stone

can generate strong impact forces when a phone falls.

Even reinforced glass may not withstand the shock of a direct drop onto these materials.

The angle of impact also matters. If the phone lands directly on the screen, the risk of damage increases significantly.

A skilled ZAGG technician carefully repairs a smartphone with a severely shattered screen. On the desk, a boxed ZAGG InvisibleShield screen protector is visible, illustrating the premium solution to prevent future screen damage from drops and impact.

If your phone screen cracked after a drop, professional repair can often restore the display quickly.

Technicians at ZAGG Phone Repair can replace damaged screens and get your phone working like new again.

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2. Edge Impacts

Many cracked screens happen when a phone lands on its edge or corner.

When the edge of the device hits the ground, the impact force can transfer through the frame and into the glass display.

This can cause:

• spiderweb cracks
• corner fractures
• cracks spreading across the screen

Even small edge impacts can create stress points in the glass.

3. Pressure Damage

Phone screens don’t only crack from drops.

Pressure applied to the phone can also damage the display.

Common pressure situations include:

• sitting on a phone in a back pocket
• placing heavy objects on the phone
• tightly packed bags or backpacks

Excess pressure can cause internal stress that eventually cracks the screen.

4. Temperature Changes

Extreme temperature changes can weaken glass.

For example, moving a phone quickly between very hot and cold environments may stress the glass and increase the risk of cracks.

Although this is less common than drop damage, temperature stress can make screens more fragile over time.

If your cracked screen is spreading or affecting touch response, it may need professional repair.

Visit a ZAGG Phone Repair location to have your screen inspected by a technician.

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5. Manufacturing Stress Over Time

Smartphone screens experience daily stress from normal use.

Over time, tiny micro-fractures may develop in the glass.

These weak points can make the screen more vulnerable to cracking during a drop.

Although modern phones use strengthened glass, no screen is completely shatterproof.

How to Prevent Phone Screens From Cracking

While accidents can’t always be avoided, several steps can help reduce the risk of screen damage.

Helpful tips include:

• using a protective phone case
• installing a screen protector
• avoiding carrying phones in loose pockets
• keeping phones away from high drop areas

These precautions can significantly reduce the chances of serious screen damage.

Protect Your Screen With InvisibleShield

One of the best ways to protect your phone screen is installing a high-quality screen protector.

Screen protectors help absorb impact energy and reduce the chance of cracks reaching the phone’s display.

At ZAGG Phone Repair, technicians install InvisibleShield screen protectors designed to protect your device while maintaining clear display quality and touch sensitivity.

InvisibleShield Mention

Many customers choose to install an InvisibleShield screen protector immediately after repairing a cracked screen to help protect their device from future drops.