Samsung A70 SM-A705 Front Camera Problem — Camera Not Working, Solution Shematic Repair

Fix Samsung A70 SM-A705 Front Camera Not Working — Causes & Solutions

The front camera on Samsung A70 SM-A705 is essential for selfies, video calls, and online meetings. So when the front camera won’t open, shows a black screen, or captures blurry images, it can be a real hassle. This issue can affect any smartphone model, from iPhone and Samsung to Oppo and Xiaomi. So what causes it? Can you fix it yourself? Let’s break it down below.

1. Signs That Samsung A70 SM-A705 Front Camera Has Issues

• Opening the front camera only shows a black screen with no image.
• Error messages like “Cannot connect to camera” or “Camera is busy.”
• Blurry or out-of-focus images from the front camera.
• The camera works intermittently or the app force closes.
• Unable to switch between the rear and front cameras.

2. Causes of Samsung A70 SM-A705 Front Camera Not Working

• Software errors:
  App conflicts or system bugs can prevent the camera from starting properly.
• Dirt or scratches on the lens:
  Dust, fingerprints, or scratches on the lens can reduce image quality.
• Faulty camera module:
  Physical damage like drops or shocks can break the front camera sensor or disconnect cables.
• Faulty control IC:
  The mainboard chip that manages camera signals may short-circuit due to moisture or previous poor repairs.
• Loose camera socket:
  After a screen replacement or previous repair, the camera connector might be loose or have poor contact.

3. Quick DIY Fixes for Front Camera Problems

• ✅ Restart the phone:
  A simple reboot can clear temporary software glitches.
• ✅ Clear Camera app cache:
  Go to Settings → Apps → Camera → Clear cache and data.
• ✅ Check for software updates:
  Install the latest firmware or security patches to fix bugs.
• ✅ Clean the camera lens:
  Use a soft microfiber cloth to gently clean the front lens. Avoid harsh chemicals.

4. Repair Process & Diagram for Front Camera Fix

If these fixes don’t help, the problem may be hardware-related. A skilled technician will follow this workflow:

• Inspect the camera module:
  Open the phone and check the cable and socket connection for the front camera.
• Test with a new module:
  Swap in a new front camera to rule out a defective module.
• Check the control IC:
  Use the mainboard schematic to test voltages and signals at the camera control IC.
• Repair socket or replace components:
  Re-solder or replace the socket if the pins are loose or damaged.

5. Tips for Repairing Samsung A70 SM-A705 Front Camera Issues

• Do not open the phone without proper tools and experience.
• Use a trusted repair shop with the right equipment to handle mainboard and IC work.
• Always ask for a clear repair plan, price quote, and warranty before you agree to proceed.

Conclusion

Front camera problems on Samsung A70 SM-A705 are common but can lead to bigger damage if fixed incorrectly. If restarting, cleaning, or updating doesn’t solve the problem, take your phone to a reputable repair shop for a proper check and fix.

📌 Tip: You can find free schematics, repair diagrams, and troubleshooting discussions on the community forum it.vtivi.com — a great place for phone and laptop technicians to share real-world repair experience.