1. Product Overview
This manual provides detailed instructions for the installation, operation, and maintenance of your SIMDOG LCD Screen Replacement for iPhone 11 Pro Max. This replacement screen is designed to restore your device's display functionality with high clarity and touch sensitivity.
1.1 Compatibility
This screen replacement is ONLY compatible with iPhone 11 Pro Max (6.5 Inch) models: A2161, A2220, A2218. It is NOT compatible with iPhone 11 (6.1 inch) or iPhone 11 Pro (5.8 inch). Please verify your phone model before proceeding with installation.
1.2 Key Features
- Incell Technology: Provides a stable and sensitive touch experience.
- 3D Touch Support: Retains original 3D Touch functionality.
- High Brightness & Color Saturation: Restores original display clarity and vibrant colors.
- Water and Splash Resistance: Designed to resist water dripping and splashing.
- Anti-Oil & Anti-Fingerprint Coating: Helps keep the screen clean.
- High Strength: Engineered to resist sharp objects and reduce the risk of screen breakage.
2. Package Contents
Please ensure all items listed below are present in your package before beginning the installation process:
- 1 x SIMDOG LCD Screen Replacement for iPhone 11 Pro Max
- 1 x Tempered Glass Protective Film
- 1 x Magnetic Screw Mat
- 1 x Waterproof Frame Adhesive Sticker
- 1 x Repair Tools Set (includes various screwdrivers, prying tools, suction cup)

Image: Contents of the SIMDOG iPhone 11 Pro Max screen replacement kit, including the screen, tools, and a screen protector.
3. Preparation for Installation
Careful preparation is crucial for a successful screen replacement. Please read all instructions thoroughly before starting.
3.1 Important Notes
- Power Off Device: Ensure your iPhone is completely powered off before starting any repair.
- Watch a Video Tutorial: It is highly recommended to watch a detailed video tutorial for iPhone 11 Pro Max screen replacement before beginning. This will provide a visual guide for each step.
- Handle with Care: The four corners of the LCD screen are sensitive. Exercise extreme caution during installation to prevent damage.
- Static Discharge: Consider using an anti-static wrist strap to prevent electrostatic discharge (ESD) damage to internal components.
- Organize Screws: Use the provided magnetic screw mat to keep track of all screws. Note that screws vary in size and length; using the wrong screw in the wrong hole can cause permanent damage.

Image: An overview of the screen's high-quality features and a simplified diagram illustrating the installation process.
4. Installation Guide
Follow these steps carefully to replace your iPhone 11 Pro Max screen. This guide assumes you have basic technical aptitude and have reviewed a video tutorial.
4.1 Disassembly (General Steps)
- Remove the two pentalobe screws located at the bottom edge of the iPhone, next to the charging port.
- Use a suction cup and prying tools to carefully separate the screen assembly from the phone's frame. Start from the bottom edge and work your way up the sides.
- Once the screen is slightly open, carefully disconnect the battery connector to prevent short circuits.
- Disconnect the display and digitizer flex cables, and the front sensor assembly flex cable.
- Remove the old screen assembly.
4.2 Transferring Components
The SIMDOG replacement screen does not include the front camera, earpiece speaker, or sensor components. You must transfer these from your original screen to the new replacement screen.
- Carefully remove the front camera and sensor assembly from the top of your old screen. This usually involves removing a few small screws and gently prying the components.
- Transfer these components to the corresponding locations on your new SIMDOG screen. Ensure all connections are secure.
- Remove the earpiece speaker from your old screen and install it onto the new screen.
4.3 Assembly (General Steps)
- Connect the display, digitizer, and front sensor assembly flex cables to the logic board on the new screen.
- Reconnect the battery connector.
- Before fully sealing the phone, perform initial testing (see Section 4.4).
- If testing is successful, apply the new waterproof frame adhesive sticker around the perimeter of the phone's frame.
- Carefully align the new screen assembly with the phone's frame, starting from the top edge, and gently press it into place.
- Reinstall the two pentalobe screws at the bottom edge of the iPhone.
4.4 Quality Control and Testing
After connecting the new screen but before fully sealing the device, perform the following tests:
- Test Frame: Ensure the screen frame sits firmly and evenly within the phone chassis.
- Test LCD: Power on the phone and check for any dead pixels, discoloration, or dust under the screen. Verify that the display is working correctly and colors appear natural.
- Test Touch: Test the touch functionality across the entire screen. Open an app and drag an icon around to ensure there are no dead spots. Test keyboard input for smooth and accurate response.
- Test Again: Verify all functions, including Face ID, True Tone (if applicable), and 3D Touch, are working as expected.

Image: A visual guide to the four-step quality control process for the screen replacement, ensuring proper function before final assembly.
5. Post-Installation & Maintenance
After successful installation, consider these steps for optimal performance and longevity.
5.1 Screen Protection
Apply the provided tempered glass protective film to the new screen. This adds an extra layer of defense against scratches and impacts, reducing the risk of future screen damage.
5.2 Waterproofing
The included waterproof frame adhesive sticker helps restore the water and dust resistance of your iPhone. While it enhances protection, the device may not retain its original factory water resistance rating after a screen replacement. Avoid submerging your device in water.
5.3 Cleaning
The screen features an anti-oil and anti-fingerprint oleophobic coating. To clean, gently wipe the screen with a soft, lint-free cloth. Avoid harsh chemicals or abrasive materials.

Image: A user engaging with the screen during gameplay, highlighting the display's quality and touch responsiveness.
6. Troubleshooting
If you encounter issues after installation, refer to the following common problems and solutions.
- Screen Not Turning On:
Ensure all flex cables (display, digitizer, battery) are securely connected. Disconnect and reconnect them. Check for any visible damage to the flex cables. - Touch Not Responding or Partial Response:
Verify the digitizer flex cable is properly seated. Power cycle the device. If the issue persists, re-check all connections and ensure no debris is obstructing the connectors. - Display Issues (Lines, Discoloration, Dead Pixels):
Carefully inspect the screen for any physical damage that might have occurred during installation. Re-check the display flex cable connection. If the issue persists, the screen itself might be faulty. - Face ID Not Working:
Ensure the original front camera and sensor assembly was correctly transferred and its flex cable is securely connected. Face ID functionality relies on these original components. - True Tone Not Working:
True Tone functionality may require transferring data from the original screen to the new screen using specialized equipment. If not performed, True Tone may be lost.
If troubleshooting steps do not resolve the issue, please contact SIMDOG customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Compatibility | iPhone 11 Pro Max (6.5 inch) - A2161, A2220, A2218 |
| Display Type | Incell LCD |
| Touch Technology | 3D Touch compatible, high sensitivity |
| Included Accessories | Tempered glass, magnetic screw mat, waterproof adhesive, repair tools |
| Item Weight | 6 ounces |
| Package Dimensions | 6.97 x 5.47 x 0.75 inches |
| Manufacturer | SIMDOG |
8. Warranty and Support
8.1 Warranty Information
All SIMDOG iPhone 11 Pro Max LCD screens undergo strict quality control and double testing before shipping. We offer a one-year warranty for non-man-made quality issues. This warranty covers defects in materials and workmanship under normal use.
The warranty does not cover damage caused by improper installation, accidental drops, liquid exposure, unauthorized repairs, or any other man-made damage.
8.2 Customer Support
If you have any questions, concerns, or require assistance with your SIMDOG screen replacement, please contact us directly via email. Our support team is available to help with installation guidance, troubleshooting, and warranty claims.
For further assistance, please refer to the contact information provided with your purchase or visit the official SIMDOG store page.





