Introduction

The market is full of both high-quality and low-quality tempered glasses. Fake or low-grade screen protectors look similar to original ones, but their protection and durability are much lower. Using a fake tempered glass can lead to:

• Poor touch response
• Weak protection against drops
• Bubbles and lifting issues
• Reduced display clarity
• Slow fingerprint sensor

This guide explains how to quickly identify whether your screen protector is original or fake.

1. Check the Thickness and Weight

Original tempered glass usually has a balanced thickness (0.25–0.33 mm). Fake protectors often feel:

• too thin
• too light
• or uneven in thickness

Thin fake glass breaks easily and provides almost no protection.

2. Look at the Edges

High-quality glass has perfectly smooth, polished 2.5D/3D curved edges. Fake protectors show:

• rough or sharp edges
• uneven curve
• visible micro-cracks

3. Test the Clarity

Original tempered glass maintains high display clarity. Fake glass looks:

• foggy or dull
• slightly yellowish
• grainy under bright light

4. Check the Oleophobic Coating

Original tempered glass has a strong oleophobic layer that resists fingerprints and gives a smooth glide. Fake glass:

• gets oily instantly
• feels sticky
• shows fingerprints that don’t wipe off easily

5. Adhesive Quality (Full Glue vs Edge Glue)

Original screen protectors use high-quality adhesive that sticks evenly across the display. Fake ones often have:

• weak glue
• bubbles forming within hours
• edge lifting after a few days

For curved phones:

Fake edge-glue glasses are common and usually cause poor touch response. Original UV glasses give full bonding and better results.

6. Touch Sensitivity Test

High-quality protectors maintain smooth and fast touch response. Fake ones cause:

• touch delay
• dragging effect
• typing mistakes
• poor gaming experience

7. Fingerprint Sensor Performance

If your phone has an in-display fingerprint sensor:

• original full-adhesive or UV glass works smoothly

Fake glasses (especially cheap privacy glass) often cause:

• slow fingerprint unlock
• failed attempts
• needing to press harder

8. Examine the Packaging

Genuine protectors come in properly sealed packaging with:

• clear printing
• correct alignment
• QR codes or product batch information

Fake packaging usually has:

• low-quality printing
• spelling mistakes
• generic, no-brand design

9. Look for Bubbles After Installation

Original tempered glass sits cleanly with minimal bubbles. Fake glass often shows:

• central bubbles
• constant corner lifting
• white spots inside

10. Price That Looks Too Good to Be True

Extremely cheap “premium” glasses are usually fake or low-grade. Genuine protectors have reasonable pricing because:

• material quality is higher
• coating layers are real
• adhesive is better

Bonus Tip: Scratch Test

Original tempered glass (9H) is scratch-resistant. Fake glass may scratch even with:

• keys
• coins
• nails

Conclusion

Identifying original vs fake screen protectors is easy when you know what to check. Look for quality indicators like thickness, edge finishing, clarity, coating, packaging and adhesive strength.

Using an original tempered glass ensures:

• better protection
• smooth touch experience
• higher fingerprint accuracy
• longer durability

Final advice: Always check the glass quality carefully before buying — your phone’s safety depends on it.