iPhone 11 Series Non-Genuine Screen Warning
Have you ever seen the 'Important Display Message' on iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max devices after third-party display repairs? The notice states, "it’s important for certified technicians who use genuine Apple display parts to repair it." And those certified technicians include Apple, Authorized Service Providers, and Independent Repair Providers who have been approved by Apple to perform repairs using OEM parts and tools.
How to fix the iPhone 11 Pro Non-Genuine screen issue? Check out below and you will find the solution you want!
- The phone comes with an unresponsive and damaged screen. We need to replace it with a new screen. Take apart the phone and remove the screen.
- Install a new OEM screen. Press the power button to turn on the phone. The Important Display Message appears.
- Tip: The Important Display Message will appear after third-party display repairs and has nothing to do with the replacement screen, whether it's an aftermarket screen or an OEM screen.
Why Does the Display Repair Warning Appear on the iPhone 11 Series?
- Why does the Display Repair Warning appear on the iPhone 11 series? The system will verify the touch module data during startup. Since the touch module is located on the back of the screen, screen replacement can result in a mismatch between the touch module data and the phone.
- The only workable solution for now is to solder the touch module from the original screen onto the new replacement screen.
- Also, since the touch module is located on the back of the screen, traditional desoldering tools can easily damage the screen. We will use a new chip grinding tool for this process.
- Apply high-temperature tape around the touch module on the replacement screen. Then wrap the screen with protective film.
- Now, grind the touch module with the electric chip grinding tool.
- Be patient during the grinding process. Start with the top layer, then move on to the next layer. Also, be careful not to damage the nearby flex cables.
- Once the solder joints become visible, stop grinding. Afterwards, clean the bonding pad with a cotton swab soaked in PCB Cleaner.
- Now, we need to remove the touch module from the original screen and solder it onto the new replacement screen.
- Remove the earpiece speaker and sensor flex cable from the original screen. Then place a piece of paper under the touch flex cable. Heat it with a Hot Air Gun and carefully pry up the touch module from the original screen.
- Then apply low-temperature solder paste to the touch module. Heat it with a Soldering Iron at 365°C to clean off residual solder and black adhesive. Clean thoroughly with Solder Wick afterwards. Then clean it with PCB Cleaner.
- Continue by reballing the touch module.
- Now, we need to solder the reballed touch module onto the replacement screen.
- Before soldering, insert a pry piece under the touch flex cable. For easier operation, we can apply some alcohol here. The metal plate and paper are used for heat insulation so that the screen won't be damaged by high temperatures during soldering.
- Apply some paste flux to the bonding pad. Position the touch module correctly and solder it with a Hot Air Gun.
- Reinstall the earpiece speaker and sensor flex cable.
- Now, we can assemble the phone and test it. Press the power button to turn on the phone. Go to Settings > About. The Important Display Message should no longer appear.
Source: iFixit – iPhone 11 Series Non-Genuine Screen Warning