The problem with the proximity sensor on smartphones running Android 7.0 Nougat and newer versions is quite common and can turn ordinary phone conversations into a real test. The screen goes blank at the most inopportune moment, when you bring the phone to your ear, but does not respond to touches, or, conversely, presses your cheek and drops calls or turns on the speakerphone. This is not just a minor nuisance, but a functional failure that requires immediate intervention in the system settings. Device owners Xiaomi, Meizu and Samsung face this especially often due to the features of the software shell.
Many users mistakenly believe that the only solution is to go to a service center, but in most cases the problem lies in a software failure or incorrect calibration. Proximity sensor is an infrared emitter located at the top of the display that responds to objects up to a few centimeters away. Its task is to save battery power and prevent accidental presses during a call by locking the screen. When this mechanism does not work correctly, there is an urgent need to forcibly disable it or reconfigure it.
In this article we will analyze in detail all the available ways to solve the problem, from standard settings to using the engineering menu. You will learn which applications can conflict with the sensor, how to properly calibrate, and in which cases a software shutdown is really necessary. We will not use complex terms without explanation, so that each smartphone owner can perform the necessary actions independently and safely.
Why the proximity sensor does not work correctly
Before moving on to radical measures to disable the sensor, it is important to understand the nature of the failure that has occurred. Often the cause is simple contamination of the top of the screen or an incorrectly applied protective film that blocks infrared radiation. Even a microscopic layer of grease or dust can distort the readings, causing the system to think that the phone is at your ear when it is not. Problems can also arise after updating the operating system, when new drivers conflict with the installed hardware.
Another common reason is third-party applications that gain excessive access rights and interfere with the operation of system processes. Antiviruses, memory “optimizers” or call management applications can block the correct transfer of data from the sensor. In some cases, the case itself becomes the culprit if it has thick sides that extend into the area of the dynamic speaker and sensor. Software bugs in the firmware should also not be discounted, especially on budget models from Chinese manufacturers.
- 📱 Protective glass: Incorrectly selected film or glass can physically block the sensor's operating area, creating a constant "object nearby" signal.
- 🦠 Virus software: Malware can intercept control of sensors, causing chaotic screen behavior during calls.
- 🔋 Battery wear: In rare cases, swelling of the battery can physically dislodge the cables connecting the sensor to the motherboard.
⚠️ Attention: If your phone has recently been dropped or exposed to moisture, the problem may be hardware in nature. In this case, software shutdown methods may not give the desired effect, and diagnostics will be required at a service center.
Understanding the cause allows you to choose the most effective method of control. If the problem is dirt, simple cleaning will help, if it’s a software problem, setting it up or turning it off will help. Ignoring the problem may result in you missing an important call or accidentally sending a voice message to a chat while your phone is in your pocket. Therefore, diagnostics should be carried out before you decide to completely deactivate the function.
Standard settings and calibration in Android 7
The operating system Android 7.0 and its modifications from different manufacturers provide built-in tools for managing sensors. The first step you need to take is to check your basic calling settings. Often, users accidentally activate functions that block the screen, or, conversely, cannot find the switch that controls the operation of the sensor during a call. The interface may differ depending on the model, but the logic remains the same.
To begin, go to the standard Phone application and find the settings menu, which is usually hidden behind three dots or bars in the corner of the screen. Find the "Incoming Calls" or "Call Options" section. There may be an option for “Proximity Sensor” or “Turn off screen during a call.” If the slider is active, try turning it off and check the result. However, on many modern smartphones this item is hidden or missing, which requires the use of more advanced methods.
☑️ Checking basic settings
If There is no standard switch, it's worth trying calibration. On smartphones Xiaomi and Redmi there is a special engineering code for this. By typing it in the dialer, you will be taken to the testing menu, where you can check the operation of each sensor. Calibrating the proximity sensor usually takes a couple of seconds: you need to close the top of the screen with your hand, and then open it, after which the system itself will determine the response thresholds. This often solves the problem without having to completely disable the feature.
It simply resets the sensor sensitivity values to factory settings. If after calibration the screen continues to go out spontaneously, then the problem is deeper and you will have to resort to using third-party software or an engineering menu. Don’t be afraid to experiment with the settings, since you can return everything back at any time.
Using the engineering menu to disable
The engineering menu is a hidden section of the operating system intended for testing equipment by engineers at the factory. Here you can control almost all components of the smartphone, including radio module, speakers and, of course, sensors. This menu is accessed through special USSD codes, which may differ for different processors. For devices based on MediaTek codes are often standard, while for Qualcomm or Exynos they can be unique.
To get to the menu, open the calling application and dial the combination, for example, ##3646633## or ##4636##. If the code matches your device, a hidden menu will open. You need to find the "Hardware Testing" or "Telephony" tab and then select "Sensor" or "Proximity Sensor". An option to disable or change thresholds may be available here. Be careful: changing unknown parameters may lead to unstable operation of the phone.
⚠️ Attention: The engineering menu interface may vary depending on the firmware version and processor model. Do not change settings that you are not sure of, especially in sections related to communication frequencies or battery voltage.
In some cases, in the engineering menu you can not only disable the sensor, but also see its current state in real time. This is a useful feature for diagnostics: you can see whether the sensor responds to your hand at all. If the values do not change when you cover the top of the screen with your hand, it means that the sensor is physically faulty or disabled at the driver level. In such a situation, software shutdown through the settings menu becomes the only way out.
List of popular codes for entering the engineering menu
##3646633## (MediaTek) - main testing menu:|##4636## (Android General) - phone information and battery:|#0# (Samsung) - extended Samsung testing:|##8255## (GTalk) - connection monitoring:
Applications for managing sensors
If the built-in system tools cannot solve the problem, specialized applications from the store come to the rescue. Google Play. There are many utilities that allow you to flexibly configure the operation of sensors, create profiles, and even completely block their operation in certain situations. Such apps often have a more user-friendly interface than a dry engineering menu, and are understandable to the average user.
One of the most popular solutions is the application Proximity Sensor Reset/Fix. It allows you not only to calibrate the sensor, but also to forcefully turn it off. Once installed, you have full control over when the screen should go dark and when it should remain active. Another option is to use macros through automation applications such as Tasker or MacroDroid, although these require more advanced knowledge to set up.
The advantage of using third-party applications is the ability to fine-tune. You can set the condition: “If Skype is running, turn off the sensor,” or “If the screen is turned off with a button, do not activate the sensor.” This gives more flexibility than a simple global shutdown. However, it is worth remembering that installing unnecessary applications consumes phone resources, so after solving the problem, it is better to remove heavy utilities.
| Application name | Main function | Presence of Root | Rating |
|---|---|---|---|
| Proximity Sensor Reset | Calibration and reset | Not required | 4.2 |
| Sensor Box | Testing all sensors | Not required | 4.5 |
| Phone Sensor | Real-time monitoring | Not required | 4.0 |
| Tasker | Automation of actions | Advisable | 4.6 |
When choosing an application, pay attention to the permissions it requests. If a simple “lock” of the sensor asks for access to contacts or geolocation, this is a reason to be wary. Data security should always be a priority. Download apps only from trusted sources, such as the official Google Play store, to avoid installing malicious code.
Disable via ADB and computer
For advanced users who are not afraid of the command line, there is a method to disable the sensor via USB debugging (ADB). This method is considered one of the most reliable, since it affects system settings directly, bypassing user interface restrictions. To do this, you will need a computer, a USB cable and installed drivers for your smartphone.
First you need to activate developer mode. To do this, go to Settings → About phone and quickly click on the build number seven times. After the “You have become a developer” notification appears, return to the main settings menu, find the “For Developers” section and enable the “USB Debugging” option. Connect your phone to your PC and launch the ADB console.
adb shell settings put system proximity_on 0This command may vary depending on the manufacturer and version of Android. In some cases, you need to change values in configuration files, which may require root access. If you are not sure of your actions, it is better to use the simpler methods described above. An error when entering a command can cause the phone to stop responding to proximity at all, which, incidentally, is our goal, but can sometimes cause a cyclic reboot.
Before using ADB, be sure to make a full backup of your data. An error in system settings can lead to the loss of important information.
Using ADB gives you complete control, but requires care. If after entering the command the screen behaved strangely, you can always reboot the device in safe mode or reset the settings to factory settings. These are extreme measures, but they will ensure that the system is returned to working order. For most users, this method may seem redundant, but it remains a powerful tool in the arsenal.
The influence of protective glasses and cases
The physical factor cannot be ignored. Very often, owners of new smartphones, when installing protective glass, do not even suspect that it can block the operation of the sensor. Accessory manufacturers do not always take into account the exact location of the infrared emitter, especially in models with narrow frames. If the glass has a black edge or is simply too thick at the top, it creates a constant interference.
To test this hypothesis, try carefully removing the protective glass or film and checking the operation of the sensor. If the problem disappears, you will need to replace the accessory with a better one, with a cutout for the sensor, or resign yourself to using the phone without screen protection. It's also worth checking the case: some models with high sides or magnetic clasps may interfere with the sensor.
- 🧼 Cleanliness: Regularly wipe the top of the screen with a soft cloth to remove grease and dirt.
- 🛡️ Glass quality: Choose protective glass marked “Compatible with proximity” sensor".
- 🧤 Cases: Avoid cases that completely cover the front panel, unless they have special cutouts.
In some cases, simply moving the protective glass a millimeter down or up helps, if the design of the case is this allows. However, this is a temporary solution and may not look aesthetically pleasing. It’s better to buy the right accessory once than to constantly struggle with a fading screen. The accessory market is huge, and finding a suitable solution will not be difficult.
⚠️ Attention: The use of low-quality protective glass can not only block the sensor, but also impair the sensitivity of the touchscreen. Cheap materials can create static electricity, which interferes with the operation of electronics.
Frequently asked questions (FAQ)
Is it safe to completely disable the proximity sensor?
Yes, it is safe for your phone's hardware. The only negative is that the screen will not go dark during a call, and you can press reset or speakerphone with your cheek. However, this can be solved by habit or by using a headset.
Why did the sensor stop working after updating Android 7?
Updates often change device drivers. Perhaps the new version of the software contains a bug or conflicts with previously installed applications. Try resetting application settings or performing calibration.
Do you need root access to disable the sensor?
Not always. Many applications and settings allow you to control the sensor without superuser rights. Root is required only for deep editing of system files if other methods do not help.
Does disabling the sensor affect battery consumption?
Minimally. The sensor consumes very little power. The main expense goes to the screen backlight, which will no longer turn off automatically during a call, which may slightly increase energy consumption.
What to do if nothing helps?
If neither calibration, nor applications, nor removing the glass helped, the sensor is probably physically faulty. In this case, only contacting a service center to replace the module or cable will help.