Remove iPhone 13 Popup & Fix Face ID Not Working After Screen Replacement

 “Important Display Message”appears after iPhone 13 screen replacement. What’s worse. Face ID can’t be set up. True Tone disappears. Since the iPhone 13 display screen includes no flood illuminator module and all the parts for the TrueDepth system are housed in the iPhone itself. We suppose transferring the original chip to the new screen can deal with it. Therefore, we try to transfer the IC on the original screen to the new screen.


Remove the new screen. Apply a protective film to the screen and heat the screen flex cable with YIHUA 8858 Hot Air Gun at 100 °C. Gently pull up the flex cable.

Insert the reballing stencil under the flex cable for insulation to protect the screen. Apply high-temperature tape. Remove black adhesive around the chip with Hot Air Gun at 240 °C. 

Change the new chip with original one

Remove the chip with the temperature Hot Air Gun at 300 °C and airflow to 6. Apply some middle-temperature Solder Paste. Clean the bonding pads with Soldering Iron at 360 °C and solder wick. Keep cleaning the bonding pads with PCB Cleaner.

Next, remove the chip on the original screen with the same method. Clean tin on the chip of the original screen. Apply some middle-temperature Solder Paste to the bonding pads.

Clean tin and black adhesive on the bonding pads of the chip with Solder Wick. Keep cleaning the bonding pads with PCB Cleaner.

Reball the chip

Put the reballing stencil in position. Apply a layer of middle-temperature Solder Paste evenly. Heat with Hot Air Gun at 300 °C to form the solder balls. After the solder balls are formed, clean with PCB cleaner.

Apply Paste Flux to the bonding pads of the new screen. Align the chip of the original screen. Solder the chip with Hot Air Gun at 300 °C.

Remove high-temperature tape after the flex cable has cooled. Connect the screen. Turn on the phone. There is no “Important Display Message”. Face ID can be set up and is working fine. But True Tone hasn’t been restored.