Realme 14 5G Manual

General Repair Information

1. Please pay attention to ESD protection requirements and wear ESD anti-static ring.
2. It is recommended to wear anti-static gloves to avoid oil stains and fingerprints.
3. Protect the display screen, camera and camera lens with protective film to prevent dust and scratching.
4. The appearance must be cleaned with dust-free cloth, anti-static brush and appropriate organic solvent (including but not limited to alcohol or isopropyl alcohol). Do not use other items (such as erasers) to clean, as they may scratch the surface coating, leading to oxidation and corrosion.
5. If the welded mechanical components (excluding shield cover and shield frame components) are defect, they cannot be repaired and must be replaced.
6. Please use the original spare parts.
7. It is necessary to use equipment provided by realme to test whether the phone is functioning properly. For example, if a customer reports an issue with the charging function, please use the original realme adapter for testing to ensure the accuracy of the test results.
8. If you have any questions regarding the repair services for this product, please contact the official realme customer service at https://www.realme.com/support

Component Disassembly Diagram

Product appearance diagram

Component Exploded View Diagram

Material list corresponding to explosion diagram

Replacement plan for main components

Number in the figure	Material Name (Component)	Physical Image	Materials Required for Replacing This Component * (In addition to replacing the component, the relevant auxiliary materials must also be replaced. If two or more components are replaced at the same time, only one set of the same auxiliary material is required )
1+2	Screen Display assembly		screen display assembly 1 PCS Auxiliary materials: 18907 - ML/pcs LF 3500 Thermal Conductive Gel 0.05 ml AB963 MAIN_CAM_OIS_ELEC_SPONGE OIS Huaqin 1pcs FPC strengthens battery bonding, back adhesive, ordinary double-sided adhesive 1pcs Battery back adhesive 1 ordinary double-sided adhesive 1pcs Battery back adhesive 2 ordinary double-sided adhesive 1pcs
3	Receiver		Receiver 1pcs Auxiliary materials: Receiver FPC backing adhesive 1pcs
8	Mainboard		Mainboard 1pcs Auxiliary materials: NA
19	Middle frame		Middle feame 1pcs Auxiliary materials: Sealing foam adhesive around the middle frame 1pcs
24	Back cover		Back cover 1pcs Auxiliary materials: AB963 Battery cover sealing foam adhesive 1pcs AB963 DECO reinforced foam adhesive for battery cover 1pcs
31	Speaker		Speaker 1pcs Auxiliary materials: NA
35+36	Under-screen fingerprint sensor		Under-screen fingerprint sensor 1pcs Auxiliary materials: NA
11	Front Camera		Front Camera 1pcs Auxiliary materials: Front camera grounding fiber graphite composite copper foil graphite
12	Rear Main Camera		Rear Main Camera 1pcs Auxiliary materials: NA
13	Rear auxiliary camera		Rear auxiliary camera 1pcs Auxiliary materials: NA
42	SUB board		SUB board 1pcs Auxiliary materials: NA
43	Motor		Motor 1pcs Auxiliary materials: NA

Disassembly process

List of Disassembly/Assembly Tools

No.	Tool	Image	Description	Remark
1#	Anti-static wrist strap		Prevents electrostatic damage	Either of the two meets the requirements; please feel free to select one.
2#	Heating tool		Tool for disassembling the back cover and other parts	Either of the two meets the requirements; please feel free to select one.
3#	Suction Cup		Tool for disassembling the back cover and other parts	Either of the two meets the requirements; please feel free to select one.
4#	Disassembly card		Tool for disassembling the back cover and other parts	Either of the two meets the requirements; please feel free to select one.
5#	ESD tweezers		Tool for handling connectors, cables, and other parts (Round Tip)	Either of the two meets the requirements; please feel free to select one.
6#	Screwdriver		Tools for removing and installing screws(Cross, diameter 1.6mm)	Either of the two meets the requirements; please feel free to select one.
7#	Button bracket disassembling tool		Tool for disassembling button bracket	Either of the two meets the requirements; please feel free to select one.

Preparation

1. 
   To avoid data loss, please back up personal data (such as SMS, photos, videos, contacts, etc.) from your phone to computers or other external storage devices.
2. Before disassembling, the device must be powered off. The default method to power off is to simultaneously press and hold the power button and the volume up button, then slide to "Shut Down."

Disassembly process

Content	No.	Picture	Operation instructions
Prepare	1		Prepare disassembly tools: heating platform, screwdriver, plastic tweezers, disassembly stick, SIM card ejector pin, dust-free cloth, suction cup, injector filled with alcohol, and thermal gel. It is necessary to wear an electrostatic wristband before disassembly. Take out the SIM card tray. The device must be forced to shut down before disassembly. Do not use the system shutdown option to shut down. This is to completely cut off the system power and protect the electronic components to the greatest extent. The method of forced shutdown is to press and hold the power button + volume up button simultaneously for about 8 seconds until the display screen goes out.
Remove Battery cover	2		Place the whole machine battery cover surface on the heating platform to heat the double-sided adhesive at the battery cover decorative part. After placement, turn on the power switch and timer switch, heat at a temperature of 80° (+/-5°) for 6 minutes. After 6 minutes, when the buzzer rings, take out the product. Pay attention to avoiding the camera. After heating, use a suction cup to select an appropriate force point for adsorption while the adhesive viscosity is weakened. During the disassembly process, adjust the position according to the tightness. A thin card can be used for auxiliary disassembly. When the battery cover and the front shell are about to separate, the force needs to be controlled. Remove the battery cover assembly and remove the residual adhesive on the battery cover.
Remove middle frame	3		Use an electric screwdriver to remove a total of 17 fixing screws of the middle frame and BOX bracket. Use a disassembling blade to slide around the middle frame. Then remove the middle frame, paying attention to the fingerprint position.
BTB&LCM FPC BTB&Link FPC BTB	4		Use tweezers or fingernails to disassemble the battery BTB & LCM FPC BTB & Link FPC BTB.
Disassemble the camera	5		Disassemble the front camera copper foil and the front camera (16M), and put on the front camera protective cover; Remove the rear auxiliary camera (2M), check for no damage and then put it into the tray; Remove the rear main camera compatible upper bracket, the rear main camera shielding cover, and the rear main camera (50M). After checking for no damage, put them into the tray.
Disassemble BOX	6		Use tweezers to remove the BOX.
Disassemble BTB	7		Use tweezers or fingernails to disassemble the small board end LCM-BTB and LCD-BTB.
Remove the motherboard	8		Use tweezers or fingernails to disassemble the main and auxiliary board end coaxial cable port. Use a screwdriver or electric screwdriver to remove the motherboard screw (1pcs). Disassemble the motherboard, clean the heat dissipation gel on the back of the motherboard and the front case. After checking that the motherboard is not damaged, put it into the tray.
Remove fingerprints	9		Use tweezers or fingernails to open the fingerprint module port and remove the fingerprint module.
Remove the battery	10		Pull the battery tearing hand position and completely open the edge-wrapped easy-tear paper on the side of the battery tearing hand position. Then use a 2.5ml small syringe to inject 3-5 drops of alcohol into the gap between the battery and the easy-tear paper. Make sure to inject on both sides. Raise both ends of the phone by 5-10S respectively to allow the alcohol to fully penetrate under the sticker. After the alcohol has penetrated, hold the component with the left hand and slowly pull the handle upward with the right hand to separate the battery from the easy-tear paper. Do the same for the left side to separate the battery from the easytear paper. Then slowly remove the battery and do not press the battery. Gently tear off the easy-tear paper of the battery.
Remove the foam on the side and bottom of the battery compartment	11		Use tweezers to remove the side foam and bottom foam of the battery compartment.
Remove the L board	12		Take off the blue RF line. Remove the Link-FPC slowly.
Disassemble the small board	13		Use a plastic disassembly stick to pry open the small board along the direction indicated by the arrows in the figure, separate the upper and lower two buckle positions of the small board from the front shell, and finally remove the small board.
Disassemble LCM FPC	14		Use tweezers or fingernails to open the screen BTB port and then slowly remove the LCM-FPC.
Remove the earpiece, light sensing board, and motor	15		Remove the receiver. Remove the light sensing small board. Remove the motor. Note: For the FPC pasting place, you can drip alcohol first and then remove it. Do not damage the FPC. The double-sided adhesive cannot be reused.

Assembly process

Content	No.	Picture	Operation instructions
Assemble the earpiece, light sensing board, and motor	1		Assemble the photosensitive small board and gently press to activate the backing adhesive. Assemble the earpiece and gently press to activate the adhesive backing. Assemble the motor. Note: The earpiece adhesive needs to be replaced.
Install motherboard	2		First, insert the motherboard diagonally into the left buckle, and then push the motherboard head into the head buckle in sequence Lock the motherboard screws (1pcs)
Install LCM FPC	3		Attach the LCMFPC waterproof silicone ring to the LCMFPC, Secure the ports on both ends of the LCM FPC and straighten them out
Install small boards	4		Install one end of the white RF cable onto the small board slot Install the small board into the front shell component, insert it from the lower buckle position first, then fasten the buckle at the motor, and check that all buckles are fully engaged
Install fingerprint module	5		Align the fingerprint with the fingerprint column and install it Use tweezers to take fingerprints and press down on the foam, then stick it in the direction shown in the diagram Align the fingerprint module BTB with the position of the small board BTB and fasten it vertically
Install RF cable	6		Align the male end of the blue coaxial line with the female end seat of the motherboard and fasten it vertically Use a wire rod to insert the black coaxial line *1 main board end into the limit slot *2, bypass the positioning column and fully insert it into the bottom wire slot of the battery compartment area. The small board end needs to be inserted into the limit slot *2 Align the white coaxial end male head with the motherboard end female head seat and fasten it vertically Use a wire rod to wrap the white coaxial line *1 around the positioning column and fully clamp it into the top slot of the battery compartment area. The small board end needs to be clamped into the limit slot *2
Install LinK FPC and battery compartment bottom foam and side foam	7		Buckle the BTB at both ends of the Link FPC, straighten out the Link FPC, and fasten the LCM FPC BTB Buckle the LCM-FPC BTB port on the small board end Install foam at the bottom of the battery compartment Install foam on the side of the battery compartment
Install camera	8		Tear off the art tape of the front camera lens and install the camera to check for any floating height, white spots, or fuzz. Stick the conductive copper foil of the front camera onto the front camera and cover it on the shielding cover. Install the rear camera (50M) and auxiliary camera (2M) onto the motherboard and fasten them together. Install the rear camera bracket and rear camera BTB shielding cover When fastening, pay attention to aligning with the BTB port to avoid BTB collapse
Install Speaker BOX	9		Install the BOX into the front shell from the bottom
Install battery	10		Install the battery from bottom to top Secure the BTB port of the battery
Install the middle frame	11		Tear off the sealing foam adhesive around the middle frame Install the middle frame onto the front shell Lock frame and BOX bracket screws 17pcs
Install battery cover	12		Tear off the adhesive release paper on the back of the battery cover and reinforce the adhesive release paper at the DECO of the battery cover. Assemble the battery cover onto the front shell
Install the card tray	13		Install the card tray into the phone

Calibration after repair

Calibration Scene

1. In order to ensure the normal operation of mobile phone, calibration must be carried out after disassembly. Failure to calibrate may cause issues such as the inability to blur in portrait mode or affect the blur effect.
2. Calibration tools

No.	Tool	Image	Description	Remark
1#	Fingerprint calibration fixed block		Tools for fingerprint calibration (Weight: 600g)	All four parts combined as a set.
	Flesh-colored rubber head		Tools for fingerprint calibration (30*30*12mm)
	Black rubber head		Tools for fingerprint calibration (30*30*12mm)
	Flesh striped rubber head		Tools for fingerprint calibration (18*18*12mm)
	Optical Fingerprint Calibration Tool		Tools for optical fingerprint calibration	Alternative Fingerprint Calibration Tool

Calibration mode

1. Input the *#899# code in the phone dialer app to enter the engineering mode.
2. Click " after-sales device calibration" and enter password 6776 to enter the calibration interface.
   (Specific calibration items shall be subject to the actual display)

Steps

1. Click "Front Color Sensor Calibration;
   
2. "Success" means the calibration is successful
   
3. Click Pass to automatically enter the next item: back color sensor calibration
   
4. Click "Back Color Sensor Calibration"
   
5. "Success" means the calibration is successful
   
6. Click Pass to automatically enter the next item: after sale wavelength calibration
   
7. Click "after wavelength calibration" to start calibration;
   
8. Calibrate with "PASS" result and manually return it after calibration
   
9. Click Pass to automatically enter the next item: fingerprint calibration
   
10. Click "START" to start calibration
    
11. Click NEXT (no need to place fingerprint rubber head now)
    
12. Click NEXT (place the striped rubber head in position)
    
13. When the interface displays "Test complete, please restart," it indicates that the calibration is complete, and it will automatically proceed to the next item.
    
14. After-sales triple camera calibration, manually return after passing, and automatically enter the next item
    
15. Follow the instructions for the "Optical Image Stabilization - Static Calibration."
    
16. Manually return after successful test
    
17. In the amplifier calibration interface, click " Calibrate". Automatically proceed to the next step once "pass" is displayed
    
18. In the motor calibration interface, click " Start", and vibration will appear after a few seconds
    
19. Click PASS to enter the next item: three-axis Hall calibration
    
20. Click the "Start" button, and then toggle the mute button on the right side of the phone until the calibration is passed.
    
21. Return manually and click PASS to automatically enter the next item: light leakage calibration
    
22. Put the upper part of the phone into a black object (e.g. black bag) and click (light leakage calibration)
    
23. Manual return after light leakage calibration shows PASS
    

The calibration process is now complete.

After the calibration process is completed, the phone must be restarted for the calibration to take effect. Once restarted, proceed to the functionality test.

Fault diagnosis and functional test

General diagnosis of Phone Manager APP

1. Function Description: general diagnosis provides basic information of your device, conducts hardware and related function checks and performs self-diagnostics to identify any potential faults. It also offers guidance and suggestions for troubleshooting any detected issues, helping you resolve device problems.
2. Diagnostic function:
   Basic functions of the device, such as abnormal detection of the camera, speaker, screen, main microphone, buttons and battery.
3. Usage instructions:
   Start the Phone Manager App > Click the three-dot icon in the top right corner > Select diagnostics > Choose the items to be checked> Start the diagnosis > Follow the instructions to complete the checks.> View the diagnostics results.
   
4. How to view the historical diagnosis records:
   Start phone manager APP > Click the three-dot icon in the top right corner > Select diagnostics > Click the three-dot icon in the top right corner > Select records > Click any historical diagnostic record > View the detailed diagnosis results.

Automatic Test in the engineering mode

1. Alternatively, you can also run the Automatic Test in the engineering mode. Test Path: Open the phone dialer app > Enter*#899# > Select the automatic test.
   Note: Once the corresponding test item is completed, a 'Confirm' dialog box will pop up. If the dialog box does not automatically pop up after the specified time, you need to press the 'Back' button to trigger the 'Confirm' dialog box. If there is a fault in the test, select 'FAIL'; if there are no issues, select 'PASS'.
2. Test items and requirements

After the above test items are completed, it will jump to the test result interface. If the item is tested as PASS, it will be marked with "√", and if the item is tested as FAIL, it will be marked with "×". It is necessary to click to enter the item marked with "×" for retesting until all items pass and the test is completed.

Upgrade and reset the system software

OTA upgrade

1. Go to Settings > About device > Tap the top version number to check for updates manually or enable 'Automatic Update overnight' in the options at the top right. Once enabled, the phone will automatically download the firmware package in a Wi-Fi environment and perform the update during idle hours at night. (If 'Automatic Update overnight' is turned off, no further prompts for night updates will be shown.)
2. In addition to the above path, you can also go to Settings > System & Updates > Software Update or enable 'Automatic Update overnight ' in the options at the top right.

Reset software

You can reset the software by performing a factory reset in the phone settings or recovery mode.

Performing a factory reset will restore the phone to its original factory settings and permanently delete all personal data. Once any reset option is executed, it cannot be undone. Please back up your personal data to a computer or other external storage device in advance.

1. Perform a factory reset in the settings: Go to Settings > System and Updates >Backup & reset > Reset Phone > Tap 'Erase All Data'.
2. Reset in recovery mode: After turning off the phone, simultaneously press and hold the power button and the volume down button for about 5 seconds to enter the Recovery mode. Select English, then choose 'Format data'. After entering the verification code, tap 'Format' (all data will be erased).

Wire connection and electronic board diagram

Guidelines

This manual is only applicable to the repair operation of realme 14 5G. All contents are owned by realme 14 5G, and it is strictly forbidden to copy, modify or reprint without authorization. Please read the manual carefully and strictly follow the instructions for maintenance service. If you have any questions, please contact the official customer service of realme.

1. Please be sure to pay attention to the parts marked with "warning". Improper handling may cause fire, personal injury or other hazards.
2. Battery safety instructions:
   Always handle the built-in battery in accordance with the prescribed guidelines! Improper handling may lead to accidents, such as leakage, bulging and other serious incidents that could endanger personal and property safety.
   1. It is forbidden to use heating equipment such as hot air gun or hot air drum to directly heat the battery;
   2. It is forbidden to use sharp objects and tools, directly contact the battery surface and remove auxiliary materials on the battery surface;
   3. The battery wrapped with easy-tear tape must have the easy-tear tape replaced with a new one after disassembly. It is forbidden to reuse the easy-tear tape;
   4. It is forbidden to reuse the deformed, damaged and non-sticky battery double-sided adhesive tape and handle position;
   5. It is forbidden to mix the battery with any other items and it must be stored separately;
   6. Check the appearance of the battery, and prohibit the use of batteries with puncture, bulge leakage or serious deformation;
   7. When installing the battery, it is necessary to ensure that there are no foreign objects on the surface of the battery and inside the battery compartment;
3. If you need to replace a damaged screen, be sure to take appropriate protective measures, such as wearing safety goggles and puncture-resistant gloves. In addition, it is recommended to use non-slip mat to secure the mobile phone during operation to prevent further damage caused by accidental sliding. At the same time, be careful to avoid broken particles from falling inside the device during operation.

1. Please pay attention to the parts marked with "Caution". Be careful when operating. Improper handling may result in data loss, hardware damage, or other damage.
2. Maintenance and calibration must be carried out in strict accordance with this guideline.
3. Only use the materials listed in the bill of material for repair service.
4. All parts shall be installed in place according to the requirements.
5. Electrostatic discharge is the major cause of damage to sensitive components of electronic products. Please strictly follow the electrostatic protection requirements in the appendix during operation.
6. Professional repairers must have the technical capability to repair smartphones and have purchased relevant insurance, which covers the liabilities arising from their business activities.

Note: realme shall not be liable for any property damage, personal injury or other safety problems resulting from failure to follow the repair and maintenance instructions. realme' liability under applicable product liability laws remains unaffected. Repairs conducted by unauthorized service providers may affect the warranty of the entire device. Please refer to the official warranty policy for more details.