This guide provides step-by-step instructions to replace a broken, non-responsive, or damaged display on the iPhone 17 Pro Max. It is necessary when encountering issues such as cracked glass, dead pixels, touch failures, or permanent vertical lines. Expect to handle heat-softened adhesives and delicate micro-connectors that require steady hands and precise screw management.
Required Tools
- 1
Prepare the device and manage battery safety
- Discharge the battery below 25% to minimize thermal runaway risks in the event of an accidental puncture.
- Power down the iPhone completely and apply overlapping strips of packing tape over the front glass if it is shattered.
- 2
Remove the bottom pentalobe screws
- Use a P2 Pentalobe driver to extract the two screws on the bottom edge on either side of the USB-C connector port.
- Place them in a categorized magnetic screw tray to ensure they do not get mixed with internal fasteners.
- 3
Soften the perimeter display adhesive
- Apply steady, controlled heat along all four edges of the display using a heat pad or heat gun set to 75-80°C for 2 to 3 minutes.
- Never concentrate high heat on a single spot to avoid overheating internal battery cells and sensor hardware.
- 4
Create a seam and insert an opening pick
- Attach a heavy-duty suction handle to the lower third of the glass and pull upward firmly to create a hairline gap at the lower seam.
- Insert a plastic opening pick no deeper than 3 mm into the gap to break the adhesive bond.
- 5
Slice through the perimeter seals
- Slowly glide plastic picks around the perimeter to slice through the adhesive, reheating edges as necessary.
- Do not insert picks more than 3 mm along the sides, especially where internal flex cables route toward the logic board.
- 6
Open the display assembly
- Gently hinge the display open from the right side toward the left side, opening it like a book cover.
- Support the screen against a sturdy prop box at an angle no greater than 90 degrees to avoid straining attached flex cables.
- 7
Disconnect the battery terminal
- Unscrew the metal logic board shield bracket using a tri-point Y000 screwdriver and remove it with tweezers.
- Use the flat edge of a plastic spudger to pry the battery connector straight up from its socket to cut all power to the board.
- 8
Disconnect the display and sensor cables
- Remove the screws retaining the display connector bracket and lift the plate out.
- Carefully disconnect the main display flex cable and ambient sensor flex cable from the logic board using a non-conductive plastic spudger.
- 9
Separate the screen and clean the frame
- Remove the old screen assembly completely from the chassis.
- Scrape away remaining adhesive remnants from the perimeter titanium channels using a spudger and isopropyl alcohol to ensure a flat seating surface for the new panel.
- 10
Transfer modular components and apply new adhesive
- If the replacement screen lacks an integrated sensor module, gently warm and transfer the ambient sensor ribbon into the new screen assembly using fine tweezers.
- Lay down a new pre-cut perimeter adhesive gasket onto the clean housing frame and burnish it into place.
- 11
Perform a pre-assembly test
- Connect the new display cables and the battery connector back to the logic board without sealing the phone.
- Turn on the iPhone to test touch accuracy, multitouch gestures, brightness levels, and camera feeds before committing to final closure.
- 12
Seat the screen and secure the chassis
- Power off the phone, reinstall all internal metal shield brackets with their original screws, and peel away the remaining adhesive liners.
- Lower the display into the frame, press gently along the perimeter until it clicks flush, and reinstall the two bottom P2 pentalobe screws.
Disclaimer: repairs are done at your own risk. Devices contain batteries and live components; improper handling can cause injury or fire. For a safe, warrantied repair, contact us.
FAQ
Will Face ID continue to work after swapping the screen?
Yes, Face ID functions normally as long as you do not tear the delicate front sensor cables during disassembly and transfer.
How do I calibrate the new screen and restore True Tone?
If using a genuine replacement panel, navigate to iOS Settings > General > About > Parts & Service History to run the built-in Repair Assistant calibration.
Why must the battery be disconnected before any display cables?
Disconnecting the battery first prevents short circuits and voltage spikes that can permanently damage the display circuit lines on the logic board.
Is water resistance fully restored after this repair?
Installing a fresh perimeter adhesive gasket restores standard dust and splash resistance, though factory water immersion ratings cannot be fully guaranteed on a opened device.
Professional Device Repair vs. DIY Guides
While our step-by-step guides are perfect for troubleshooting minor issues at home, complex hardware faults require expert intervention. If you are facing critical issues, choosing a professional phone repair Slovenia or laptop repair Slovenia service ensures your device is handled safely without risking further damage.
Why Choose KRON Servis for Your Tech Repairs?
At KRON Servis, we repair over 3,284 devices every month with an outstanding customer rating of 4.9/5. Whether you need a reliable phone repair Ljubljana or comprehensive servicing for consoles, TVs, and smart mobility, our certified technicians are here to help. We operate in two convenient locations: Zagrebška cesta 83a in Maribor and Vilharjeva cesta 29 in Ljubljana, open Monday to Friday from 8:00 to 16:00.
We use high-quality OEM parts and offer a 12-month warranty on all repairs. Professional diagnostics are available for 25 € (VAT included). Avoid the risks of DIY mistakes and let our experts restore your device. For more details on our rates, visit our pricing page, check our services, or contact us directly at questions@kron.si or via our contact form. You can also track your device anytime on our repair status page.