Replacing the back glass of an iPhone back glass replacement is one of the more delicate repair tasks due to the combination of strong adhesive, glass fragments, and sensitive internal components. Using professional tools ensures safety, precision, and a clean finish. This guide walks you through the process step by step.
Required Professional Tools
Before starting, make sure you have the following tools:
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Heat gun or professional iPhone heating pad
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Precision screwdriver set (Pentalobe, Phillips, Tri-point)
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Suction cup and plastic opening picks
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Razor or thin metal spudger for adhesive removal
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Tweezers
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Professional adhesive strips for back glass
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Protective gloves and eye protection
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Replacement back glass
Optional but recommended:
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Back glass removal machine (for faster, safer glass separation)
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Isopropyl alcohol (99%) for cleaning surfaces
Step 1: Power Off and Prepare the Work Area
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Power off the iPhone completely.
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Place the device on a clean, flat, and static-free work surface.
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Wear protective gloves and glasses to avoid injury from broken glass.
Step 2: Remove the Screws and Bottom Components
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Use a Pentalobe screwdriver to remove the two screws at the bottom of the phone, next to the charging port.
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Apply slight heat around the edges to loosen adhesive on the back glass if necessary.
Tip: Heating the back to around 80°C–90°C softens adhesive without damaging internal components.
Step 3: Loosen the Back Glass
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Use a suction cup near the edge of the back glass to lift slightly.
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Insert a plastic opening pick or spudger to carefully separate the glass from the adhesive.
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Slowly slide the pick around the perimeter. Take your time to avoid cracking the glass further or damaging the camera lens.
Pro Tip: A heated iPhone back glass machine can automate this step, making the process safer and faster.
Step 4: Remove Broken Glass Pieces
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If the back is shattered, gently remove the broken glass pieces using tweezers.
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Work from the edges inward, wearing gloves to avoid cuts.
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Dispose of glass pieces safely.
Step 5: Clean the Adhesive Residue
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Use a razor, spudger, or isopropyl alcohol to remove old adhesive from the frame.
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Make sure the surface is completely clean and dry before applying new adhesive.
Pro Tip: A thin layer of 99% isopropyl alcohol dissolves residual adhesive without harming internal components.
Step 6: Apply New Adhesive
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Use professional back glass adhesive strips or pre-cut adhesive that matches the model.
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Carefully place adhesive on the frame, ensuring alignment with all edges.
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Press gently to ensure a solid bond without air gaps.
Step 7: Install Replacement Back Glass
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Align the replacement back glass carefully over the adhesive.
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Press gently from the center outward to ensure the glass sticks evenly.
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Avoid sliding the glass, as this can weaken the adhesive or leave fingerprints under the glass.
Step 8: Reassemble the Phone
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Replace the two Pentalobe screws at the bottom.
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Double-check the phone for proper alignment, tight seals, and secure edges.
Step 9: Final Inspection
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Check for any gaps or lifted edges.
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Make sure the camera lens, flash, and wireless charging coil (if applicable) are unobstructed.
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Test the phone by powering it on and verifying that touch and wireless functions work correctly.
Pro Tips for Professionals
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Always work slowly to avoid cracking the new glass during installation.
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Using a back glass removal machine reduces the risk of injury and speeds up large-scale repairs.
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Avoid using excessive heat directly on the camera area — the lens adhesives are sensitive.
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Keep spare replacement adhesive and precision tools on hand for multiple repairs.
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Record or label screws carefully — iPhone screws vary in length and size.
Conclusion
Replacing the iPhone back glass requires patience, precision, and the right professional tools. Using a combination of heat, precision screwdrivers, spudgers, and high-quality adhesive ensures a clean repair. For technicians, investing in professional-grade tools and machines not only increases efficiency but also reduces the risk of damaging the device or injuring yourself.
By following this step-by-step guide, professional repair technicians can consistently achieve safe and durable back glass replacements.
