When your Xiaomi Redmi suddenly stops responding to touch, it can cause panic, especially if the screen displays important notifications or an urgent call. Smartphones of this brand are known for their reliability, but software failures of firmware or physical damage to the display can lead to a complete locking of the touch layer. In most cases, the problem lies not in the breakage of the screen itself, but in the conflict of software processes or surface contamination.
The first thing to do is to analyze the previous events, the phone may fall, get wet or just overheat after a long game, the digital layer (digitizer) responsible for transmitting signals from the fingers to the processor could move away from the matrix or get a microcrack, but often the culprit is static electricity or a malfunction of the MIUI operating system.
In this guide, we will go into all possible causes, from simple software errors to complex hardware malfunctions, learn how to diagnose yourself, use hidden engineering menus to check the sensor, and apply forced reboot techniques. It is important to act consistently so as not to aggravate the situation and save data.
The main reasons for the failure of the sensor on Redmi
Understanding the root of the problem is half the success of solving it. When a Redmi screen stops feeling touch, it can be caused by a combination of factors. The most common cause is damage to the protective glass or the display module itself. Even if there are no visible cracks, the internal impact could disrupt the contact of the plume. Mechanical impact often causes individual areas of the screen to stop working, or the sensor begins to fan out - register the presses where they are not.
The second big block of problems is software. Android operating system in conjunction with the shell MIUI sometimes fails, especially after a failed update or installation of incompatible applications. Background processes can “hang” the driver touchscreen, making the interface unresponsive.
- 🔋 Unstable power: Using cheap charging units creates interference that causes the capacitive layer of the screen to work incorrectly.
- 💧 Moisture and pollution: water droplets, greasy spots or high humidity in the room can disrupt the electrical conductivity of the sensor.
- 📱 Accessories conflict: Too thick or metal protective glass often blocks touchscreen sensitivity.
⚠️ Warning: If your phone has recently been in water, do not charge it or try to dry it with a hair dryer.
Separately, it is worth mentioning the overheating of the device. During prolonged load, the processor and battery heat up, which can lead to temporary failure of peripheral components, including the touch screen, in which case thermal protection can limit the functionality of the device until cooling.
📊 Have you experienced sensor failure after your phone crashes?
Yeah, the screen broke.
Yeah, but the screen's intact.
No, the phone just got stuck.
The problem arose after the update.
Before you carry a device to the service or perform a data reset, you need to determine exactly whether the touch layer itself is working physically. In Xiaomi and Redmi smartphones, there is a built-in CIT (Customer Integration Test) engineering menu that allows you to test all hardware components regardless of the state of the operating system, this method is the most reliable for detecting hardware defects.
The diagnostic menu usually uses a special code typed in the Phone app, but if the screen is not responding partially, it can be difficult to type in the code. USB-keyboard OTG. If the menu is open, select the item associated with display testing (usually called Touchpanel or Version).
In the test mode, you'll have a grid, and your task is to swipe your finger across all the cells, and if the sensor is good, each cell will change color when it touches (usually green), and those areas that remain empty or do not respond to intense friction indicate that the digitizer is physically malfunctioning.
What if the code doesn't work?
If ##6484## doesn't open the menu, try to enter it without pressing the call button. On some versions of MIUI, you just need to type the code. Also, you can access the tests through the Service app -> Diagnostics. If the test shows broken zones, software methods are likely not to help. Replace the display module. If the test is successful, but in normal mode the phone is bugged, the problem lies in the software or application conflict. Software methods for fixing the problem When the hardware is working, but Redmi continues to ignore the commands, you need to conduct the software methods, the software process is not likely to be used, the system is not to reboot, and the process is the first to become a induced to become a minozed by the process, which is the first step, the system to become a minozigiger. To perform a hard restart on most Xiaomi models, you need to press the power button and hold it for a while. 10-15 Some models require a combination of Volume Down. + Power. The device should vibrate and show the Mi or Redmi logo. This action is safe for your data and often solves the problem of a dead sensor. If the reboot didn't help, check if you recently installed an application that could have caused the conflict. Try loading your phone into Safe Mode, which only runs system applications, and if the sensor is working normally in Safe Mode, it's one of the apps you've installed that's to blame. 🗑️ Cache Clearing: You can clear temporary system files that may have been corrupted through the Recovery menu. 🔄 Update: Check for updates MIUI, As in new versions often correct the bugs touchscreen. 🚫 Disabling gestures: switching to a classic navigation menu can temporarily solve the problem with incorrect swipe recognition. ⚠️ Note: Before performing any actions related to resetting or flashing, be sure to back up important data if you have the option to connect a mouse or keyboard via a OTG. It is also worth checking the settings of the special "One-handed control" feature, which sometimes activating this feature or changing the size of the interface can shift the active area of the screen, creating the illusion of a broken sensor along the edges of the display. If the sensor responds but with delay or inaccuracy (for example, press one button and hit the next one), calibration is required. Unlike older resistive screens, modern capacitive arrays are calibrated programmatically through touchscreen resetting. On the standard menu. MIUI So you might not have that option, so you'd have to use an engineering menu or a third-party utility, and one of the effective ways is to use the code to reset the calibration. Enter the code ##64663## (if supported by your model) or find the Touch Calibration item in the engineering menu. CIT. Follow the instructions on the screen: you usually need to press the crosses in the corners and center of the screen in a certain order. In the case where the software failure is deep, you may need to completely reset to the factory settings (Hard Reset). It's a radical measure that will delete all user data, but often brings the phone back to life, and it's done through the Recovery menu: turn off the phone, then press Volume Up. + Food before the appearance of the logo. Method Data Security Efficiency Reboot Complexity Reset Low (temporary crashes) Low Safe Mode Saved Medium (conflict search) Average CIT Calibration Saved High (when software failures) Average Hard Reset Removed Maximum High After resetting the system will be clean. If the problem persists due to software debris or viruses, the phone should work properly. If the sensor behaves strangely after the reset, the probability of hardware failure tends to 100%. The impact of external factors and the ass are not affected by the electrical changes, users often the block the environment, the problem is not affected by the electrical changes. Cheap chargers and unshielded cables create strong electromagnetic tips, so when you plug your phone into a charger, the screen can start to “live its life” or stop responding to touch, a phenomenon called “ghost touch.” The solution is one, to replace the charger with the original or certified one, and the protective glass can also be the cause, and if the glass is curved, has air bubbles in the sensor area, or is simply too thick, the sensitivity drops. This is especially true for models with curved edges of the screen (2.5D), where the glass may not fit tightly, creating a gap. 🧤 Gloves: Regular fabric gloves block the signal. Use "Gloves" mode in settings or special conductive gloves. 🧲 Magnets: Magnetic clasp cases can cause local interference if the magnet is not well positioned. 🌡️ Temperature: In extreme frost, the battery and screen capacity drops, leading to temporary inadequate operation. 💡Try removing the cover and wiping the screen with a microfiber soaked in a special solution for the screens, and sometimes the layer of fat from the fingers creates a non-conductive film that you can't see. If all software methods are exhausted and the engineering test shows dead zones, only repairs remain. In Xiaomi Redmi smartphones, the sensor and matrix are often combined into a single module, which makes it easier to replace, but makes it more expensive. Changing the sensor glass separately at home is extremely difficult and requires special equipment (separator, laminator). The process of replacing the module requires carefulness. It's important to check the connector on the motherboard. Oxidation of contacts after moisture is a common cause of failure that can be eliminated by cleaning alcohol and ultrasound. When choosing a part, focus on quality. Original modules (or high-quality copies of the class). OEM) They provide the right color reproduction and sensitivity. Cheap analogues can have understated brightness and poor multi-touch response (simultaneous touching). ⚠️ Warning: When you disassemble your phone yourself, you lose your warranty. If the device is warranty, take it straight to an authorized service center, even if you smash the screen yourself - sometimes the defect can be complex. The cost of replacing varies depending on the model. For the budget Redmi, this can be economically feasible, whereas for the flagship Mi series, the cost of the original display can be a significant part of the price of the device. Mouse and keyboard control If the screen is not working completely, but the image is there, and you urgently need to save data or make a call, you can use external input devices. OTG (On-the-Go, which allows you to connect USB-You'll need a USB-to-Type-C (or Micro-USB) adapter. Connect a normal computer mouse. You'll have a cursor on the screen that you can control clicks. This will unlock the phone (by entering a pattern lock or a graphical key). PIN-Click code, copy the photo to your computer or cloud, and back up your contacts. Items required: 1. OTG (USB-host). 2. Wired USB-Mouse (wireless can not work without drivers). 3. USB-Keyboard (to type in if the sensor doesn't work) This is a great crutch to pull through repairs or save important files, and the mouse emulates finger touches, so it works even when the glass is damaged, unless the touchscreen controller itself is completely burned. Does a wireless mouse work? - Conventional wireless mice USB-receiver works through OTG Bluetooth mice are harder to connect, because you need a working sensor to pair them to enable Bluetooth in the settings. Frequently asked questions (FAQ) Why does Redmi only react when pressed hard? It's a sign of wear on the touch layer or bad plume contact. It can also be a problem with too thick a safety glass. Try removing the glass and checking. If it doesn't work, you need to change the module. Can you recover data if the touchscreen is completely broken? Yes, if the matrix is intact and the image is there. Use the OTG adapter with a mouse to control or connect the phone to your computer (if you previously allowed debugging over USB or file transfer mode). The phone itself presses the applications, what to do? This phenomenon is called "ghost touch." Causes: unoriginal charging, static electricity, moisture getting under the screen or physical damage to the plume. Try changing the charger and removing the case. Resetting deletes all files? Yes, a full reset (Wipe calibre) This phenomenon is called "ghost touch touch" if you can always make a copy of the phone from the phone before the application, if you use the phone for the phone, if you have a copy of the phone before the phone, if you use the phone to use the phone, you use the phone to use the phone? Modern screens are calibrated at the factory level or through the CIT engineering menu. Third-party applications only emulate touches, but cannot fix a physical driver failure.