IN THIS ;
- How to Change Mobile Display in Android Phones
- Display & Parts Buying Sources
- Free Mobile Phone Repairing Books PDF (Links)
- What Is OCA in Mobile Phones? (Full Details)
- Mobile Repairing Tools Name List (With Details)
How to Change Mobile Display in Android Phones
Introduction ;
Mobile display change means replacing a damaged or faulty screen in an Android phone. This process is usually done in a mobile service center by a technician, but understanding the full procedure helps users know the cost, quality, and risks.
1. When Do You Need to Change a Mobile Display?
You should replace the display if you see:
- Cracked or broken glass
- Black screen / No display
- Touch not working
- Display lines or flickering
- Dead pixels or color issues
- Screen bleeding or white spots
- If only glass is broken but touch & display work, some phones support glass-only replacement.
2. Types of Mobile Displays Used in Service Centers
- A. Original (OEM) Display
- Same as factory display
- Best quality & touch response
- Expensive
- Recommended for premium phones
- B. Compatible / Copy Display
- Third-party screen
- Cheaper
- Average quality
- May reduce brightness or touch sensitivity
TWO TYPE OF DISPLAY
- Amoled
- Lcd
1. AMOLED MOBILE DISPLAY ;
Qulitty ; Best Colors And Low Power
Cost ; High
2. LCD MOBILE DISPLAY ;
QULITTY ; Normal Qulitty
Cost ; Normal
3. TOOLS REQUIRED FOR DISPLAY CHANGE ( SERVISE TOOLS )
- Screwdriver Set
- Heat Gun/Heating Pad
- Plastic Opening Tools
- Suction Cup
- Tweezers
- Isopropyl Alcohol
- New Adhesive / Glue
4. Step-by-Step Mobile Display Change Process
Step 1: Power OFF the Phone
- Turn off the device completely
- Remove SIM tray
Step 2: Open the Back Panel
- Heat the back cover to loosen adhesive
- Use plastic tool to open safely
- Glass back phones need extra care.
Step 3: Disconnect Battery
- Remove protective plates
- Disconnect battery connector first (VERY IMPORTANT)
Step 4: Remove Old Display
- Disconnect display flex cable
- Heat front panel
- Carefully separate broken display
Step 5: Test New Display (Before Fixing)
- Connect new display temporarily
- Power ON phone
Check:
- Touch
- Brightness
- Colors
- Fingerprint (if in-display)
- Always test before final fixing.
Step 6: Fix New Display
- Apply fresh adhesive
- Place display properly
- Press gently for perfect fit
Step 7: Reassemble Phone
- Reconnect battery
- Close back panel
- Insert SIM tray
- Power ON phone
5. Time Required for Display Change
- 30 – 90 minutes
- Phone model
- Display type
- Damage level
6. Mobile Display Change Cost (India – Approx.)
- Phone Type And Cost Range
- Budget Android - 1,500 – 3,000
- Mid-range - 3,000 – 7,000
- AMOLED Phones - 7,000 – 15,000
- Flagship Phones - 15,000+
- Original display costs more than copy display.
7. Risks & Important Warnings
- Data loss not common, but backup recommended
- Water resistance may reduce
- Fingerprint issues after replacement
Cheap display may cause:
- Battery drain
- Touch lag
- Low brightness
8. How to Check Display Quality After Replacement
- Dial *#0*# (Samsung test menu)
- Check color uniformity
- Test multi-touch
- Use brightness test apps
- Check proximity sensor
9. Service Center vs Local Shop Diffrent
- Service Center
- Original display
- Warranty available
- High cost
- Local Shop
- Copy or OEM
- No warranty
- Lower cost
Display & Parts Buying Sources
iFixit Parts & Tools (repair parts & screens + guides) – Good because the site also has repair tutorials you can link to.
Amazon Search – Mobile Phone Displays & Tools
- https://www.amazon.in/s?k=mobile+replacement+display+for+phones
- eBay Search – Mobile Phone Screens & Repair Parts
https://www.ebay.com/sch/i.html?_nkw=mobile+phone+replacement+display
Free Mobile Phone Repairing Books PDF (Links)
Mobile Phone Repairing PDF Book (80-page tutorial) – Free download with step-by-step repair guides for hardware & software issues.
Mobile Phone Repair Manuals & Tutorial PDFs – List of manuals you can download (includes separate hardware and Android repair guides).
Mobile Repairing Notes (Free PDF Notes) – Short free PDF notes for mobile repair hardware basics.
Mobile Phone Repairing PDF (Archive) – Free downloadable 80-page/basic guide books fr beginners.
Complete Repair Guide PDF (Mobile Phones & Tablets Repairs) – Full guide book PDF (not official but widely circulated free).
10. Tips to Avoid Display Damage
- Use tempered glass
- Use shockproof case
- Avoid overheating
- Don’t use phone while charging
- Keep phone away from water
What Is OCA in Mobile Phones? (Full Details)
1. Meaning of OCA
- OCA stands for Optical Clear Adhesive.
- It is a high-quality transparent adhesive film used in mobile phones to stick the front glass to the display panel (LCD or AMOLED).
- OCA is specially designed to:
- Stay crystal clear
- Not affect touch sensitivity
- Not reduce display brightness or clarity
2. Where Is OCA Used in a Mobile?
- OCA is mainly used inside the mobile display assembly, between:
- Outer glass (touch glass)
- Inner display panel (LCD / AMOLED)
- You cannot see OCA from outside, but it plays a very important role in display quality.
3. Why OCA Is Important
- OCA ensures:
- Clear image quality (no blur or haze)
- Proper touch response
- Strong bonding between glass and display
- No air bubbles or light leakage
- Smooth screen performance
- Without OCA, the display may look dull, unresponsive, or uneven
4. OCA Sheet vs Liquid Glue
There are two types of adhesives used in display repair:
OCA Sheet (Best Quality)
- Pre-cut transparent film
- Used in professional service centers
- Gives factory-level finish
- Long-lasting and reliable
Liquid Glue (LOCA / UV Glue)
- Liquid form, cured using UV light
- Cheaper alternative
- Higher risk of leakage
- May damage display or sensors if not applied properly
- OCA sheet is always recommended for premium repairs.
5. OCA in Mobile Display Repair
When a phone’s:
- Glass is broken
- Display is still working
- Technicians can:
- Remove the broken glass
- Clean old adhesive
- Apply a new OCA sheet
- Re-laminate the glass using a machine
- This process is called display refurbishing.
6. Benefits of Using OCA
- Maintains original display clarity
- Touch works like new
- No yellowing over time
- Strong and even bonding
- Professional finish
7. Problems If Low-Quality OCA Is Used
- Touch delay or dead zones
- Air bubbles inside the screen
- Screen brightness reduction
- Glass coming loose after some time
- Short display lifespan
Mobile Repairing Tools Name List (With Details)
1. Screwdriver Set
- A precision screwdriver set is used to open mobile phones.
- It includes different heads like Phillips, Torx, Pentalobe, and Tri-point, which match various phone screws.
- Use: Opening mobile phones safely without damaging screws.
2. Plastic Opening Tools
- These are thin plastic tools used to separate the phone body, screen, or back panel.
- Use: Opening phones without scratching or breaking parts.
3. Metal Spudger
- A flat metal tool used for stronger prying during repair work.
- Use: Removing connectors, shields, or tightly fixed parts.
- Use carefully to avoid short circuits.
4. Suction Cup
- A suction tool used to lift the display or back glass.
- Use: Safe screen removal without applying pressure.
5. Heat Gun / Hot Air Blower
- A device that produces controlled heat.
- Use: Softening adhesive while removing screens, batteries, or back panels.
6. Heating Pad / Heating Plate
- A flat heating surface with temperature control.
- Use: Even heating for display and back glass removal.
7. Tweezers (Anti-Static)
- Fine-tip tweezers made from anti-static material.
- Use: Holding small screws, cables, and connectors.
8. Multimeter
- An electronic testing tool.
- Use: Checking voltage, continuity, short circuits, and battery health.
9. Power Supply (DC Power Supply)
- Provides controlled power to a mobile motherboard.
- Use: Testing phone power issues and current consumption.
10. Soldering Iron
- A tool used to melt solder.
- Use: Joining wires, connectors, and small electronic components.
11. Hot Air Rework Station
- A professional heating tool with adjustable airflow and temperature.
- Use: Removing and fixing ICs, chips, and connectors on the motherboard.
12. Flux
- A chemical cleaning agent used during soldering.
- Use: Improves solder flow and prevents oxidation.
13. Solder Wire / Solder Paste
- Metal alloy used for soldering components.
- Use: Making strong electrical connections.
14. Microscope (Repair Microscope)
- A magnifying optical device.
- Use: Viewing small components and IC pins clearly during motherboard repair.
15. Cleaning Brush
- Soft or hard brushes used for cleaning.
- Use: Removing dust, corrosion, and flux residue.
16. Isopropyl Alcohol (IPA)
- A cleaning liquid used in electronics.
- Use: Cleaning motherboard, connectors, and display adhesive safely.
17. Adhesive Tape / Glue
- Special tapes and glues used in mobile repair.
- Use: Fixing batteries, displays, and back covers.
18. OCA Sheet / LOCA Glue
- Display bonding materials.
- Use: Attaching display glass to the screen panel.
19. SIM Tray Ejector Tool
- A thin metal pin.
- Use: Removing SIM card tray.
20. Magnetic Screw Mat
- A magnetic work mat.
- Use: Organizing screws and parts during repair.
21. Anti-Static Wrist Strap
- Protective wearable tool.
- Use: Prevents electrostatic discharge (ESD) damage to components.
22. Battery Activation Tool
- A small power tool for batteries.
- Use: Activating dead or new batteries before installation.
23. Display Separator Machine
- A professional machine used in advanced repairs.
- Use: Separating broken glass from display safely.
24. Lamination Machine
- Used after applying OCA.
- Use: Bonding glass and display under pressure.
25. UV Lamp
- A curing lamp.
- Use: Hardening UV glue (LOCA) during display repair.
- Tool Categories (Quick View)
- Basic Tools: Screwdrivers, opening tools, suction cup
- Electronic Tools: Multimeter, power supply
- Soldering Tools: Soldering iron, hot air station
- Display Tools: Heating pad, OCA, lamination machine
Conclusion
Mobile display change in Android phones is a technical service process requiring:
Correct tools
Quality display
Proper testing
Choosing the right display type and service center ensures long screen life and good performance.
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