How to Fix vivo Y51 Pro Proximity Sensor Not Working During Calls

The proximity sensor on the vivo Y51 Pro turns off the screen when you bring the phone close to your ear during calls. When it stops working, the screen stays on, which can lead to accidental touches, muted calls, or unwanted actions.

This issue is usually caused by dirt, screen protectors, or software glitches. Here’s how to fix it and restore normal call behavior.

Why Proximity Sensor Is Not Working on vivo Y51 Pro

• Dirt or dust blocking the sensor near the front camera
• Thick or poorly aligned screen protector interfering with detection
• Software glitches affecting sensor response
• Incorrect call or display settings
• Third-party apps causing conflicts

Troubleshooting Procedures

Clean the Area Around the Proximity Sensor

The proximity sensor is located near the top of the screen, close to the front camera. Dirt or smudges can block it and prevent proper detection.

1. Turn off your phone, then inspect the top front area.
2. Use a soft, dry cloth, then gently clean the sensor area.

After cleaning, make a test call and check if the screen turns off when you bring the phone to your ear.

Remove or Adjust the Screen Protector

Some screen protectors can block or interfere with the proximity sensor. This is common with thick or poorly aligned ones.

1. Check the top part of your screen, then look for any obstruction near the sensor.
2. Remove the screen protector, then try making a call again.

If the issue is resolved, consider using a thinner or properly aligned protector.

Restart Your vivo Y51 Pro

Temporary system glitches can affect how sensors work. Restarting the phone refreshes system processes.

1. Press and hold the Power button, then tap Restart.
2. Tap Restart again, then wait for the device to reboot.

Once the phone is back on, test the proximity sensor during a call.

Check for Software Updates

Outdated software can cause sensor-related issues. Updates often include bug fixes that improve performance.

1. Open Settings, then tap System update.
2. Tap Check for updates, then install any available updates.

After updating, test the sensor again during a call.

Test the Proximity Sensor Using Built-in Tools

Testing helps confirm whether the sensor is working or not. This can help you decide the next step.

1. Open Settings, then tap About phone.
2. Tap Hardware information, then run a sensor test if available.

If the sensor does not respond during testing, it may be a hardware issue.

Reset All Settings

Incorrect system settings can affect how the proximity sensor behaves. Resetting settings restores default configurations.

1. Open Settings, then tap System management.
2. Tap Reset, then select Reset all settings.

This does not delete your files but resets system preferences.

Check for Third-Party App Conflicts

Some apps can interfere with sensors, especially call-related or screen control apps. Identifying them can help resolve the issue.

1. Press and hold the Power button, then tap Restart.
2. Tap and hold Power off, then enter Safe mode.

In Safe mode, make a call and check if the screen turns off properly.

Visit a Service Center

If none of the fixes work, the proximity sensor may be physically damaged. Professional inspection is the best option.

1. Back up your data, then turn off your phone.
2. Visit an authorized service center, then have the device checked.

Technicians can diagnose and repair hardware-related issues.

The proximity sensor on the vivo Y51 Pro plays an important role during calls, and when it fails, it can affect usability. By cleaning the sensor area, checking accessories, and fixing software issues, you can usually restore it quickly without needing repairs.

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