Why doesn't the screen on my phone go dark when I hold it to my ear? In this article you will find information on how to enable the screen lock function during a call in Xiaomi settings. If on your Xiaomi smartphone, when there is an incoming or outgoing call, the screen stops going dark and locking when you bring the phone to your ear, then you may have disabled this function in the Android settings. This could happen completely by accident and you simply didn’t notice, or your children went through the phone’s settings and turned off the proximity sensor. In our example, we will show how to enable the proximity sensor on the Xiaomi Redmi 4X so that when you bring the phone to your ear, the screen will lock and go dark. Perhaps the information will apply to other Android smartphones and tablets.
In order for the screen to automatically lock on Android when you bring it to your ear, you need to do the following. We open the phone icon on Xiaomi and get to where we usually dial the number to call. Next, press the “menu” touch button in the form of three horizontal stripes. (On some Androids, after opening the phone, the “menu” can also be opened with a touch button in the form of three stripes located under the screen on the left side. This button must be pressed and held a little to bring up the menu.) Look below at the attached pictures, where the necessary icons are highlighted and buttons.
Next, in the menu window that opens on Xiaomi, select the Incoming calls item, under which there will be a short description of the possible settings (additional settings for the device’s behavior for incoming calls).
In the "Incoming calls" settings on Xiaomi, find and select the item Proximity sensor under which it will be written (turn off the screen automatically when you bring the phone to your ear during a conversation) and turn it on. Done, now when you bring the phone to your ear, the screen will turn off and lock, thereby preventing accidental presses and touches on the touch screen.
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06-03-2019
08 o'clock 12 min.
Message:
Thank you! Redmi note 5 - everything worked out!
27-02-2019
11 o'clock 11 min.
Message:
Thanks a lot. Model Redmi6 Recommendation is correct
05-02-2019
11 p.m. 30 min.
Message:
Thanks a lot. It helped) the article is clear, everything is to the point.
24-01-2019
21 o'clock 37 min.
Message:
Xiaomi Redmi 5 phone recommendation came up.
28-12-2018
00 o'clock 16 min.
Message:
Thank you for the useful information. I checked everything, but still the phone is not blocked when making calls(
12-12-2018
13 o'clock 38 min.
Message:
If the sensor is activated, disable the lock in your pocket
30-11-2018
7 p.m. 16 min.
Message:
Alas. All the settings are set correctly. Thanks to you, at least I learned how to check this. But the screen is still on during a call(
22-11-2018
12 o'clock 43 min.
Message:
The screen does not turn off during a conversation. The proximity sensor is activated
21-09-2018
15 o'clock 20 minutes.
Message:
I have a Redmi 4A and everything is connected, but only during normal calls, and when you call from applications (watsap, imo...) it doesn’t work, the blocking does not turn on. What exactly to do with applications?
01-09-2018
07 o'clock 47 min.
Message:
Why when I take a call or call someone. My screen turns off. When I try to turn on the screen using the lock, no result. I tried turning the proximity sensor off and on. Did not work out. What to do?
23-08-2018
13 o'clock 36 min.
Message:
Thank you very much!
11-07-2018
13 o'clock 12 min.
Message:
Finally, you need to reboot.
28-04-2018
12 o'clock 57 min.
Message:
Thank you, useful information
The functionality of Android smartphones goes far beyond making calls and surfing the Internet. Modern gadgets much more versatile, with their help you can take photographs and shoot videos; mobile devices can also be used as a GPS navigator, documents, TV remote control, etc. Such extensive functionality becomes available thanks to built-in hardware modules, one of which, perhaps not the most popular, we will get acquainted with today. It's called a proximity sensor.
What is a proximity sensor and why is it needed on a smartphone?
A proximity sensor is a small sensor device that reacts when you approach an object. As a rule, these sensors are physically located at the top of the front panel of the device, most often next to the hearing speaker. In smartphones, they are used mainly to automatically turn off the screen when you bring the gadget to your ear. This not only prevents you from accidentally pressing touch buttons and calling up unnecessary functions, but also saves battery power, because if the screen remained on during a call, which could last for more than one minute, the battery would drain much faster.
The proximity sensor can also be used for another purpose, for example, to automatically receive calls (again, when you bring the gadget to your ear). There are other options. Thus, the sensor is sometimes programmed to increase the speaker volume when the user puts the phone in his pocket.
There are two main types of proximity sensors. The first, optical, is an infrared transceiver that emits waves in the invisible spectrum and receives their reflection from an object. The signal reflection time serves as a parameter for enabling a particular function. If the signal is not reflected or the reflection time is longer than specified, the sensor does not operate. Sensors of the second type are ultrasonic (sonar). They work on a similar principle, but instead of infrared radiation they use ultrasound. Sensors of this type have not yet found widespread use in smartphones.
How to enable or disable the proximity sensor
The use of such a sensor is not so necessary; moreover, in certain circumstances, the functionality it offers even causes inconvenience to the phone owner. Fortunately, the sensor can be deactivated. Let's see how to disable the proximity sensor on Android.
In most versions of Android OS, the option to disable the sensor is in the general settings. Open “Settings” on your phone, go to the “ System applications" and select "Phone". From the list of available options, select "Incoming Calls" and set the "Proximity Sensor" switch to the "Off" position.
Depending on the smartphone model, the location and name of the desired setting may differ slightly. For example, on older versions of Android, the sensor control option is often called “Turn off screen during a call.”
We believe there is no particular need to explain how to enable the proximity sensor on Android; this is done using the same option. However, it is possible that your model will not have a proximity sensor control function, although the sensor itself will be present. In this case, we recommend using third-party utilities like Sanity.
This application is used to control the functionality of the dialer; it also supports control of the proximity sensor. To enable/disable the sensor, you need to go to the “Proximity” section and check or uncheck the “Turn off in proximity” checkbox. You can also use the Smart Screen Off application, designed to configure different buttons and sensors on Android phones. Unfortunately, not all such programs work correctly; after changing the parameters, you need to check the proximity sensor and make sure that it is really on/off.
Sensor calibration
The proximity sensor is a very precise device, and even the slightest glitch can cause it to not work properly. If the problem is that the sensor does not respond at the right time, it must be calibrated.
Standard Android tools
You can find the corresponding option in the general settings of your smartphone. Usually, to do this, you should open the “Special Features” section; on some models you should go to the “Screen” section.
The calibration procedure involves three steps. It is best done by placing the smartphone on a flat surface. First, the wizard will ask you to remove all objects in front of the sensor, and then click “Start”. After a few seconds, you will be asked to bring an object a short distance (2-3 cm) to the sensor. This could be a book, a thick sheet of paper, etc. Click “Next” and follow the wizard’s instructions, moving the object further and closer to the sensor. After a few seconds, save the settings by clicking “OK”. If everything goes well, the message “Calibration completed successfully” will appear on the screen.
Engineering menu
What other way is there to configure the proximity sensor on Android? If you have the proper experience, dig into your device. After dialing the code corresponding to your phone model, go to the menu, click on the “Hardware Testing” tab, click the “Sensor” button and select “Light/Proximity Sensor”.
Next, sequentially select “ PS Calibration – Calibration – Calculate min value" When the message “Calculate succeed” appears at the bottom of the screen, bring the object to the sensor and first click “Calculate Max value” and then “Do Calibration”. Upon completion of all manipulations, reboot the device.
Now click the “Calibrate” button, confirm the action by clicking “Confirm” and reboot. The developer recommends using this application on rooted devices; if you don’t have one, you most likely won’t be able to calibrate the proximity sensor with it.
What to do if none of the methods helped solve the problem? The reasons why you cannot enable or disable, or calibrate the proximity sensor, in some cases are hardware in nature, and can only be eliminated at a service center. Also, the source of problems is often the “inappropriate” firmware of the gadget, which does not properly support all the functions of the hardware.
Let's talk about the All Screen Lock program, which is a screen lock during a call. Needed by those who do not have a working proximity sensor on Android. Let's go to the program and see what it is.
A menu opened to our eyes, there are various sub-items. Let's go through them. Activation and deactivation occurs. You can also use the unlocking method by long pressing the icon for this, but more on this a little later.
There is information, bar blocking (so that the “bar” status is blocked during a call), and if necessary, turn it on or off. The “start a call with an unlocked” option (while you are calling, this program is not turned on until you press the corresponding button). It’s time to “turn on the slider”, let’s stop.
Let's launch the slider and we can set a style for it, select the multi-colored one that is needed. Let's choose red and start demonstrating how the software works. To demonstrate, you need to call a number from your Android.
The proximity sensor is broken and the screen does not turn off during a call. We touch our ear and we can reset the call. This did not happen; this program was created. Let's dial the number and show you how it works.
During a call, a slider appears to prevent any accidental clicks. While the slider is active, we cannot do anything with the phone. To end a call or carry out other actions, you need to move the “slider” to the side. Then the blocking is removed and we can perform any actions. This is the first feature in this program - a slider.
Let's turn off the slider and show another method we use. Choose any lock you like, it will appear on the screen. We'll show you how to work with this setting. Let's go to calls and dial the number. A key appears on the screen; to unlock it, you need to press the key and a lock appears. After this we can perform actions with the phone. While the key is on, we can’t do anything, the screen is completely blocked. This is how it works this function on the phone.
Let's go to the settings and see what else we can do. Move the unlocker – if we enable this item, the lock that was shown can be searched across the entire screen. You can select a position on the screen where this lock will be displayed, top left and right, bottom left and right, choose where it is convenient and in that place it appears. Bottom right, when it called, it was in the bottom right corner.
The unlocking method works with this lock. The function is disabled, if you turn it on, a short tab is not enough to unlock, you need to keep it locked and after that it will unlock.
In modern mobile devices the presence of complex Xiaomi applications no longer surprises anyone. These include various text and media editors, a fingerprint scanner, and proximity and illumination (light) functionality. The latter are responsible for adjusting the screen brightness during a conversation. It is worth mentioning that the indicator of light, illumination and proximity is one general service.
It happens that the brightness does not drop when the gadget is touched to the ear. The first thing that is important to do is to restart the phone; if the lighting still does not work, then adjust it.
Reasons for non-working sensors on Xiaomi
1. The application is disabled.
First check if it is turned on. To do this, open the “Phone” application by long pressing and select “incoming calls”. Enable proximity if it is turned off.
2. "Harmful" services included.
Often the cause of a sensor not working properly is a “pocket disconnect”. As a result, the Xiaomi light sensor does not work correctly. The fix is simple. Go down to “Calls” - “Inbox” and switch the slider to the other side.
3. Film or glass for protection.
The Xiaomi proximity sensor will definitely not function if its window is closed. It is located near the front camera on top. Therefore it is important from mechanical damage use original protective coatings or glue universal ones in such a way that they do not cover them.
Checking for module malfunction on Xiaomi
When all of the above reasons are not relevant, then you need to perform a certain list of actions to check the functionality of the function. First you need to dial *#*#6484#*#* without dialing. After entering the engineering menu, five windows will be available. Swipe on the top right.
In the list of suggested actions, find the “Proximity” sensor at the bottom.
When you touch this window, the “far” and “close” labels should change (they are also on the screen). If nothing happens, then adjustments are needed.
Xiaomi sensor calibration
For this task you need to perform the following sequence of actions:
1. Turn off your smartphone completely
2. Press volume up simultaneously with power on until the vibration signal and release.
3. The variator will open on Chinese. Point to “中文” to change language.
4. Follow “PCBA test” to get to the factory menu.
If the sensor does not respond to fingers, then control can be achieved using “Forward” and “Backward”.
5. Go to “Proximity sensor” and place the gadget horizontally. The option hole should not be covered and without bright light shining on it.
6. Configure using “Calibration”. The appearance of the inscription “Successfully” will mean that the work was completed successfully.
You can check the module like this. Cover the hole with an opaque object. The number should change from 1 to 0.
Use the “Pass” button to go back to the engineering variator, then use the “Finish” and “Power Off” keys to turn off the smartphone. Then you can download it and check the function during a conversation.
If this algorithm did not help restore the module, then its firmware can help. Another reason could be that the display is not installed correctly.
The proximity sensor on Android is a special device located next to the front camera of the device, which serves to perform certain functions. For example, when the sensor detects an approaching object (you brought the smartphone to your ear), it turns off the screen backlight to save battery consumption during a call, or it allows you to automatically answer a call.
However, many users often encounter this problem: the proximity sensor does not work correctly, as a result of which during communication, the conversation is put on hold or even reset, although you did not press anything. In such cases, it makes sense to disable it altogether. From this article you will learn how to do this.
Disabling the proximity sensor on Android using built-in tools
Video instruction
Disabling the proximity sensor through third-party programs
If for some reason you were unable to disable the proximity sensor on Android using the method described above, then use the application called and do the following: 
Let us add that there are a lot of such applications, but they all work on a similar principle.
Special service code
You can also disable the proximity sensor by entering a special code. For different models phones it is different - there is no universal combination. On the Internet you can find such a code specifically for your smartphone. One of the most common - * # * # 0588 # * # * . However, it is not a fact that it will work.
Conclusion
Now you have learned how to disable the proximity sensor on Android and you can tell your friends if they encounter this problem. Please ask any questions you have below in the comments, and we will definitely answer!
