If your vivo S50 screen stays on during calls, your cheek may press buttons, mute the microphone, or even end the call accidentally.
This usually means the proximity sensor is not detecting your face properly.
The issue can come from simple causes like a dirty sensor, a case blocking it, or a software setting that needs adjustment.
Why Your vivo S50 Proximity Sensor Is Not Working
- The top sensor area is covered with dust, oil, or a screen protector.
- A thick phone case is blocking the sensor.
- The sensor calibration is incorrect.
- A recent software update caused temporary glitches.
- Third party apps are interfering with call behavior.
Clean the Top Sensor Area
The proximity sensor is located near the top front of your phone.
If it is dirty or covered, it cannot detect when the phone is near your face.
Use a clean microfiber cloth, and gently wipe the top bezel area.
Remove your screen protector temporarily, and check if it improves the sensor response.
Make a test call and raise the phone to your ear.
Remove the Phone Case
Some thick or poorly fitted cases can partially block the sensor.
This prevents it from detecting distance accurately.
Remove the case, and then make a test call.
Raise the phone to your ear, and check if the screen turns off properly.
Restart Your Phone
Temporary software bugs can affect sensor performance.
A quick restart refreshes system services and clears minor glitches.
Press and hold the Power button, and then tap Restart.
Wait for the phone to boot up completely, and test the sensor during a call.
Check for Software Updates
Sensor issues can sometimes be related to software bugs.
Installing the latest update may fix known problems.
Open Settings, and then tap System update.
Tap Check for updates, and install any available update.
Restart the phone after updating.
Reset App Preferences
If third party apps are interfering with call behavior, resetting app preferences can help.
This will not delete your data.
Open Settings, and then tap Apps.
Tap Reset app preferences, and confirm the reset.
Test the sensor again during a phone call.
Perform a Sensor Test
vivo devices include hardware testing options in the service menu.
This helps confirm whether the sensor is physically working.
Open the Phone app, and dial ##558#.
Select Proximity sensor test, and follow the on screen instructions.
If the sensor fails the test, it may require professional repair.
If your vivo S50 proximity sensor is not turning off the screen during calls, start with simple fixes like cleaning the sensor and removing the case.
Most issues are software related and can be resolved without repair.
FAQs
Why does my screen stay on during calls even when I hold it to my ear?
The proximity sensor may be blocked or malfunctioning. Cleaning the top of the screen or removing the case usually fixes this.
Can a screen protector affect the proximity sensor?
Yes. Thick or poorly aligned screen protectors can interfere with the sensor and prevent it from detecting your face.
How do I know if my proximity sensor is broken?
You can run a hardware test using the service code. If the sensor fails consistently, it may need replacement by a technician.
