Can you reuse a screen protector?

In this article we cover the different ways one can reuse the screen protecting cover of their smartphones.

Can you reuse a screen protector?

While some users have succeeded in doing so, it is generally not recommended to reuse a tempered glass screen protector.

The adhesive remaining on the guard after it is removed from the original device collects dust. Furthermore, after the glue has been utilised, it will not have the same power to stick to a fresh surface.

Without the fresh glue surface, a secure seal with the new device’s screen is unlikely, resulting in bubbles or screen protector failure.

What is a screen protector and what its made of

Android screen and its fragility are very much known, and compared to the older generation of phones, it is more fragile, and care must be taken in dealing with the use.

The screen protector was created to enhance the screen’s longevity when it was accidentally subjected to mechanical forces such as falling.

A screen protector is a piece of extra material—usually polyurethane or laminated glass—that may be added to an electronic device’s screen to protect it from physical harm.

Screen protectors are often constructed of polymers like polyethylene terephthalate (PET) or thermoplastic polyurethane (TPU) or laminated tempered glass, which are identical to the device’s original screen.

Plastic screen protectors are less expensive than glass, and they’re also thinner (0.1 mm (0.004 in) compared to 0.3 to 0.5 mm (0.012 to 0.020 in) for glass.

Glass will withstand scratches better than plastic and feel more like the device’s screen for the same price, yet more expensive plastic protectors may be better than the cheapest tempered glass ones, because glass may shatter or break with enough impact force.

We shall discuss these two materials in more detail

Polyethylene terephthalate (PET)

PET (also abbreviated PETE) is the chemical term for polyester, polyethylene terephthalate.

PET is a transparent, sturdy, and lightweight plastic often used in the packaging of foods and beverages, particularly convenience-sized soft drinks, juices, and water. 

PET is used to make almost all single-serving and 2-litre bottles of carbonated soft drinks and water marketed in the United States.

Salad sauces, peanut butter, cooking oils, mouthwash, shampoo, liquid hand soap, window cleaning, and even tennis balls are all packaged in it. 

For take-home food containers and prepared meal trays that can be reheated in the oven or microwave, special PET grades are employed.

Ethylene glycol and terephthalic acid are the main building components of PET, which are mixed to form a polymer chain. PET strands like spaghetti are extruded, immediately cooled, then chopped into little pellets.

The resin pellets are then heated until they become a molten liquid that can be extruded or moulded into almost any shape.

PET was developed in North America by DuPont chemists looking for new synthetic fibres in the mid-1940s. DuPont eventually labelled their PET fibre as “Dacron.”

Today, more than half of the world’s synthetic fibre is generated from PET, which is dubbed “polyester” when used for fibre or fabric applications. 

PET or PET resin is the name given to it when it is used for containers and other applications.

Tempered glass

Tempered glass, often known as toughened glass, is a form of safety glass that has been strengthened by regulated heat or chemical treatments.

The exterior surfaces are compressed, while the inside is tensed, during tempering. When shattered, the glass shatters into microscopic granular fragments rather than splintering into jagged shards as it occurs with typical annealed glass. 

Injury is less likely to occur with the granular portions.

Tempered glass is used in a range of applications, including as passenger vehicle windows, shower doors, aquariums, architectural glass doors and tables, refrigerator trays, mobile phone screen protectors, bulletproof glass components, diving masks, and plates and cookware, for its safety and robustness.

How to apply a screen protector on your phone

Although the presence of a tempered glass protector increases the chances of eradicating an air bubble, there may be an air bubble on your screen after installing the tempered glass protector due to inexperience.

Because the existence of an air bubble irritates many Android users, when done correctly, it eliminates the possibility of air bubbles.

Follow these procedures to install the tempered glass protection to your Android device without creating air bubbles.

  • Clean the Android Device Screen
  • Press the screen into your phone.

We shall cover these steps in more detail below.

Clean the Android Device Screen

You must remove the dust from the screen surface before applying the tempered screen protector; dust may do a number of things, including generating air space and scratching or shattering the screen if the dust particles are tougher than the screen.

Wipe the screen of your Android smartphone with the alcohol wipe and the sticky dust remover to remove the dust (which are sometimes included with the screen protector as part of the installation items).

You may only place the screen on the android smartphone once it has been thoroughly cleaned of dust and water molecules.

If the water molecules are not properly removed, it leads to the air bubble in between the screen and the protector.

Press the screen into your phone.

Before you begin, keep in mind that the screen protector cover must be the final thing you remove.

Align the screen protector with the phone screen and press down hard on the protector with your finger in the centre of the phone screen.

It is preferable to begin in the centre since it will be easier to work the air bubbles at the perimeter of the middle during installation.

Because there is no way to know how the installation will go, the air bubble should not form. Work from the centre outwards to eliminate the bubble.

When should you replace a tempered glass screen protector?

So, can a tempered glass screen protector be reused? No. To expand on this subject, when should a tempered glass screen protector be replaced?

It is critical to replace the protector as soon as possible if there is any flaw in the glass, even a little pit.

Tempered glass screen protectors, like automobile windshields, employ laminated layers of glass to disperse force throughout the protector’s surface. 

Any flaw will operate as a fracture point, resulting in greater fractures and the possibility of scratched fingertips.

You should also replace a screen protector that has begun to peel at one side. This means the adhesive is beginning to break, and the screen protector may shift or fail to protect your screen in the event of a direct collision.

How to remove a tempered glass screen protector?

Some of the commercially available screen protectors are simple to remove. Lift a corner of the protector carefully with your fingernail or a tiny piece of plastic.

Once the screen protector has separated from the screen, carefully peel it away from the screen. If you force it, the protection will break, resulting in further labour.

The protection should ideally come off in one piece. Keep the old screen protector in a secure location until you’re ready to install the new one.

Place the old screen protector in the same container as the new tempered glass screen protector to ensure proper disposal.

How to safely dispose of screen protectors

Screen protectors’ recycling depends upon the material that was used for making it. 

Polyethylene terephthalate (PET)

PET is the most recycled plastic in the United States and throughout the world. Every year, more than 1.5 billion pounds of discarded PET bottles and containers are recovered for recycling in the United States. 

The #1 in the triangular “chasing arrows” code, which is commonly moulded into the bottom or side of the container, may clearly identify PET. The #1 code is not seen on any other material.

PET can be commercially recycled by thoroughly washing and remelting it, or by chemically breaking it down to its constituent materials to create new PET resin.

PET containers are accepted in almost every municipal recycling programme in North America and Europe.

PET may be professionally recycled by thoroughly cleaning and remelting it, or by chemically breaking it down to its constituent elements to create new PET resin.

New PET bottles and jars, carpet, apparel, industrial strapping, rope, automotive parts, fiberfill for winter coats and sleeping bags, building materials, and protective packaging are all examples of products manufactured from recycled PET.

Tempered glass

While it is fantastic to recycle recyclables, glass products should not be placed in the recycling bin. The reason for this is that they are fragile and have the potential to do injury if broken.

Glass tops should not be placed in the recycle container. Waste should be recycled. You might be able to recycle your screen protector depending on the materials it was made of so it doesn’t end up in a landfill permanently. 

To find out which materials can be recycled, contact your local sanitation agency. Looking at the recycling code on your glass is a simple method to see if it can be recycled.

It’s probably okay to put in the recycle bin if it’s an allowed code by your recycling programme.


Failure, ordinary wear and tear, or aesthetic considerations can all contribute to the need to replace a tempered glass screen protector.

However, reusing an old screen protector is not advised, especially if the adhesive has deteriorated. If the screen protector is made of PET, it may be recycled, however tempered glass is more difficult to recycle.


Is it better to use a glass or a plastic mobile screen protector?

Glass is heavier than plastic and therefore far more likely to break during transport. As a result, it emits more greenhouse gases and costs more to transport than plastic.

Finally, glass takes one million years to degrade in the environment, and maybe much longer in a landfill.

Is tempered glass expensive?

Tempered glass is likewise more expensive to buy than regular glass, however it is less expensive than laminated glass.

The cost is another factor that influences the decision between laminated and tempered glass, depending on the preferences of the building owner.


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