Oppo F21s Pro Problems 100% FIX! App Crash, Camera Blur, Display Tint, Overheating | 15 Steps

Oppo F21s Pro Problems 100% FIX!

App Crash Fix, Camera Blur, Display Tint Fix, Overheating | 15 Steps + 1 REAL Photo

By Nadeem Gulaab

15 Expert Steps

4 Major Issues

100% Working Fixes

ColorOS Optimized

🚫

App Crash Fix

Stable app performance

📸

Camera Blur

Sharp, clear photos

🎨

Display Tint Fix

Natural colors

🌡️

Overheating

Cool operation

Real Oppo F21s Pro device - Optimized for stable performance

App Crash Fix Solution

Step 1: App Optimization

Update all apps via Google Play Store and Oppo App Market
Clear app cache and data for crashing apps
Uninstall and reinstall problematic apps
Check app compatibility with ColorOS version
Disable auto-update for unstable apps

Step 2: System Cache Clear

Power off device completely
Press Volume Down + Power buttons simultaneously
Select "Wipe cache partition" from recovery menu
Reboot system normally
Repeat monthly for maintenance

Step 3: RAM Management

Go to Phone Manager > Clean storage
Enable "RAM expansion" in Settings
Close unused background apps
Restart phone weekly
Use "App freeze" feature for unused apps

Result: Apps will run stable without unexpected crashes.

Camera Blur Fix Solution

Step 4: Camera Lens & Settings

Clean all camera lenses with microfiber cloth
Remove any camera protector causing obstruction
Enable "AI scene enhancement" in Camera settings
Set photo resolution to 64MP for main camera
Turn on "Touch to capture" for better focus

Step 5: Focus & Stability Optimization

Tap to focus before capturing photos
Enable "Tracking auto-focus" if available
Use tripod or stable surface for low-light photography
Hold phone steady for 2 seconds after pressing shutter
Use "Night mode" for better low-light performance

Step 6: Camera App Maintenance

Go to Settings > Apps > Camera
Clear camera app cache and data
Update Camera app via Oppo App Market
Reset camera settings to default
Test all camera modes (Portrait, Night, Pro)

64MP Camera Tip: Use "High resolution" mode only for well-lit scenes to avoid blur.

Display Tint Fix Solution

Step 7: Display Settings Adjustment

Go to Settings > Display & brightness
Set color mode to "Vivid" or "Natural"
Adjust color temperature slider
Enable "Dark mode" for testing
Set screen color temperature to "Warm" or "Cool"

Step 8: Advanced Display Options

Enable Developer options (tap Build number 7 times)
Disable "Hardware overlays"
Set "Minimum width" to default (360dp)
Enable "Force dark mode" for testing
Update display drivers via system updates

Step 9: Display Hardware Test

Test for color uniformity using solid color images
Check for dead pixels or discoloration
Test auto-brightness functionality
Verify all display modes work properly
Ensure screen protector is not causing tint

Note: If tint persists, it might be hardware issue - visit Oppo service center.

Overheating Fix Solution

Step 10: Thermal Management

Remove phone case during intensive usage
Avoid using phone while charging
Close all background apps regularly
Keep phone in well-ventilated area
Don't expose to direct sunlight

Step 11: Performance Settings

Set performance mode to "Balanced"
Disable 5G when not in use
Reduce screen brightness to 50-60%
Turn off location services when not needed
Limit gaming and video streaming sessions

Step 12: App Temperature Control

Monitor heating apps in Battery settings
Update all apps to latest versions
Clear cache for resource-heavy apps
Use lite versions of social media apps
Restrict background activity for heating apps

Additional Optimization Steps

Step 13: ColorOS System Update

Go to Settings > About phone > Software update
Check for ColorOS updates regularly
Install latest security patches
Update all system apps via Oppo App Market
Reboot phone after updates

Step 14: System Maintenance

Run Phone Manager optimization weekly
Clear storage cache regularly
Use Auto optimize feature daily
Monitor battery and storage health
Check for malware with Security scan

Step 15: Factory Reset (Last Option)

Backup all data to Oppo Cloud or computer
Go to Settings > Additional settings > Backup & reset
Select "Erase all data (factory reset)"
Confirm and wait for process completion
Restore only essential data after reset

Important: Factory reset should be your last resort. Always backup data before proceeding.

Final Result: Your Oppo F21s Pro will perform optimally with stable apps, blur-free camera, natural display colors, and cool operation!