How to Replace an iPhone Screen: A Step-by-Step Repair Guide

Replacing a cracked iPhone screen is the most common phone repair there is, and on most models a competent technician finishes it in 20 to 45 minutes. This guide covers the job on iPhone 8 through iPhone 15, where the basic procedure is the same: the display assembly is held by two bottom screws and a ring of adhesive, and it opens from the bottom edge like a book hinged on the left.

If you have never opened a phone before, read the whole guide first. The two steps that ruin most first attempts happen in the first five minutes, and both are easy to avoid once you know about them.

First, work out what actually failed

Three failures look similar from the outside, and they change what you should check before ordering a part.

  • Cracked glass, display otherwise normal. Touch responds everywhere and colours are correct. This is still a full assembly swap. Separating glass from the OLED panel needs a laminating press and a clean bench, and on a single unit it is not worth the risk.
  • Dead touch in one area, or phantom touches. The digitizer layer is damaged. Full assembly replacement.
  • Black screen, green or pink vertical lines, or patchy backlight. The panel itself has failed. Replace the assembly, but test with a known-good display first, because the same symptoms appear when the display connector on the logic board is damaged. Fitting a new screen to a board-level fault wastes the part.

Tools you actually need

  • P2 pentalobe driver for the two screws beside the charging port
  • Y000 tripoint driver for the connector bracket on iPhone 7 and later
  • Phillips 000 for the remaining brackets
  • Suction cup or a screen opening tool
  • Thin plastic picks and a plastic spudger
  • A heat source you can control: a heat mat at 60 to 70 C, or a hot air station on its lowest setting
  • Curved ESD-safe tweezers
  • A replacement adhesive strip for the model
  • A magnetic screw mat

That last one is not optional. The screws around the display bracket are different lengths, and a long screw driven into a short hole goes straight through to the logic board. It is the most expensive mistake in this repair.

Choosing the replacement display

For iPhone 8 and SE the original panel is LCD. From iPhone X onward it is OLED, and that is where the choices start.

  • Hard OLED is rigid, cheaper, and the colours are good. It does not curve, so on models with curved edges the fit is slightly different.
  • Soft OLED is flexible and matches the original geometry and viewing angles. It costs more.
  • Incell LCD is the budget option for OLED models. Bright and durable, but blacks are grey rather than black.

Whatever you fit, the phone shows a non-genuine part notice unless the original display chip is transferred, and True Tone stops working. Both are restored with a programmer that copies the data off the old panel. Decide this before you quote the customer, not after.

The repair, step by step

  1. Back up and power off. Not optional. If the board is damaged during the repair, the data goes with it.
  2. Remove the two pentalobe screws either side of the charging port.
  3. Warm the bottom edge for 60 to 90 seconds. The adhesive softens around 60 C. Too cool and you pull hard enough to crack the new panel; too hot and you cook the battery.
  4. Lift from the bottom with the suction cup until a pick fits, then run the pick along the left and right sides only. Never along the top: the top edge is a hinge, and the display flex cables run through it.
  5. Open the phone like a book, hinging to the left, to about 90 degrees. Support it there.
  6. Disconnect the battery first. Unscrew the battery connector bracket and lift the connector straight up with a spudger. Every other connector comes after this one.
  7. Remove the display connector bracket and disconnect the display flexes, again lifting straight up, never at an angle.
  8. Transfer the components from the old assembly: earpiece speaker, sensor flex with the Face ID or Touch ID hardware, and the front camera. Face ID hardware is paired to the board. If you damage that flex, Face ID is gone permanently and no part replaces it.
  9. Clean the frame of old adhesive with isopropyl alcohol, apply the new strip, and reconnect in reverse order: display flexes first, brackets, battery last.
  10. Test before sealing. Power on with the screen loose and work through the checklist below.

Test before you seal

  • Touch response in all four corners and along both edges
  • Face ID or Touch ID enrolment, not just unlock
  • Earpiece during a real call, not a speaker test
  • Front camera, both photo and video
  • Proximity sensor: the screen should go dark when you cover the earpiece on a call
  • Auto brightness in a dark room and under a lamp
  • Rotation and the ambient light sensor

Sealing the phone and then finding a dead earpiece means opening it again and buying another adhesive strip.

Five mistakes that ruin the repair

  1. Opening from the top. Tears the display flex. The phone is then dead regardless of the new screen.
  2. Disconnecting the display before the battery. Shorts the display circuit on the board. This is the most common cause of a backlight fault after a screen repair.
  3. Mixing up screw lengths. Long screw, short hole, dead logic board.
  4. Prying a connector at an angle. Lifts the pads off the board. Straight up, always.
  5. Over-tightening the brackets. They need to be snug, not torqued. Cracking the display connector is easy at this stage.

How long it takes

A first attempt on your own phone, working carefully: 60 to 90 minutes. A technician doing it daily: 20 to 30 minutes including testing. Budget an extra 10 minutes if you are transferring the display chip with a programmer.

Parts for this repair

Everything this guide calls for is in two collections: replacement panels in iPhone Displays, and drivers, picks, heat mats, suction tools, tweezers and programmers in Repair Tools. If the phone is also holding charge poorly, it is worth doing the battery in the same opening, see Batteries. For the rest of the range, Apple Parts.

Not sure which panel to order? Our comparison of Original, Soft OLED, Hard OLED and Incell screens explains what each type costs you in picture quality, and lists which types exist for all 31 iPhone models.

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