Why Won’t My OPPO Screen Turn Off During Calls
Modern smartphones, including OPPO devices, are equipped with a proximity sensor, a small, built-in component that detects how close the phone is to your face during a call. This feature helps prevent accidental screen touches and conserves battery by automatically turning off the display when the phone is held to your ear. However, if your screen doesn’t turn off during calls, it may indicate an issue with the sensor or related settings. This guide will explain how the proximity sensor works, why it’s important, and walk you through practical steps to check and troubleshoot the feature on your OPPO smartphone.
What is a Proximity Sensor
The proximity sensor is a small component located near the top of your OPPO smartphone screen. Its main function is to detect how close the phone is to your face or another object. During a phone call, the sensor automatically turns off the screen when it senses the phone is near your ear. This helps conserve battery life, prevent accidental screen touches, and reduce heat generation. However, there may be times when the proximity sensor does not function correctly, causing the screen to stay on during calls. If you’re experiencing this issue, follow the troubleshooting steps below to restore your device’s normal behavior.
Where is the Proximity Sensor Located
The proximity sensor is installed automatically on the top front of your phone next to the earpiece. However, sometimes, the proximity sensor may not work. This could be due to:
Unsuitable/ incompatible phone cases.
Improperly installed screen protectors.
A hardware sensor failure or software failure.
What to Do if the Proximity Sensor is Not Working
Check if the problem is solved after each method before trying the next one.
Remove the phone case and screen protector. Check if the phone casing and screen protector are blocking the sensor.
Restart your OPPO phone, and make sure you have updated your phone to the latest software version. To restart your OPPO phone, press and hold the Power and Volume Up buttons for at least 8 seconds or until you see the OPPO logo.
You can test and detect on your OPPO phone per the ColorOS version below.
For ColorOS 13 and above: Go to [Phone Manager] > tap on the [Three-dotted icon] on the upper right corner of the screen > [Diagnostics]
Select [Sensors] and disable other components. Tap [Run diagnostics] and follow the on-screen instructions to check if your sensors work properly. If detection results show an error or abnormality, contact the OPPO Support Team for assistance.
For ColorOS 12: Go to [Phone Manager], tap [Tools] at the lower right, and tap [Diagnostics]. Then tap [Diagnostics] > and select [Sensors] and disable other components. Tap [Run diagnostics] and follow the on-screen instructions to check if your sensors work properly. If detection results show an error or abnormality, contact the OPPO Support Team for assistance.
For ColorOS 11 to ColorOS 11.3: Go to [Phone Manager] > [Diagnostics] > [Continue]. Select [Sensors] and disable other components. Tap [Run diagnostics] and follow the on-screen instructions to check if your sensors work properly. If detection results show abnormal, contact the OPPO Support Team for assistance.
Note: This option is only available for ColorOS 3.2 and above devices.
If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center.
Note:
Special technology is applied to conceal the proximity sensor in the upper front of OPPO's smartphone for the whole look of simplicity. It may cause an abnormality of proximity function if the film or protector covers the proximity sensor area.
The proximity sensor is enabled by default. There is no way to enable or disable it.
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* Pictures, settings, and paths might differ from those of your phone, but it does not affect the description in this article.