Xiaomi Redmi 4 is not included: reasons and solutions

The situation when the beloved Xiaomi Redmi 4 suddenly ceases to respond to clicks, familiar to many owners of this popular model. Smartphone can simply go out and no longer show signs of life, or endlessly try to start the system, staying on the logo.

The reasons for this behavior range from the banal discharge of the battery to serious hardware failures of the motherboard. Redmi 4, released a few years ago, by this time could face natural wear of components, especially if the device is actively in use.

In this article, we will look at all the stages of diagnostics, from checking the charger to complex manipulations of the system partition, you will learn how to distinguish the software from a physical failure and what actions can finally "kill" the phone if you do them wrong, carefully following the instructions will save time and money.

Primary diagnostics and verification of food elements

The first thing to do if the Xiaomi Redmi 4 doesn’t turn on is to eliminate power supply problems. Often users experience a so-called “deep discharge” when the battery voltage drops below a critical level and the charge controller blocks the onset, in which case the phone may not respond to the power button even when connected to the network.

Try to leave the device on charge for at least 30-40 minutes, even if the screen does not light up. Use only the original cable and power supply, as cheap analogues may not give the necessary current to start the controller. The charging indicator may not burn immediately - this is normal for a severely discharged battery.

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Try connecting the phone to USB-Sometimes, a lower start current helps the battery controller wake up without the risk of overheating.

If after a long charge the phone is still silent, check the charging connector. Redmi 4 uses a Micro-USB connector, which eventually shatters or clogs with dust. Carefully, without fanaticism, clean the port with a dry toothbrush or a wooden toothpick. Metal objects are better not to use, so as not to close the contacts.

• 🔋 Check the cable on another device – it could just break inside.
• 🔌 Make sure the power supply gives a stable 5 volts (you can check with a multimeter).
• 🧹 Clean the Micro-USB connector from pile and dust that block contact.

In rare cases, the problem lies in the battery itself, which may have swelled or lost capacity, and if the back of the phone is slightly raised or there are signs of deformation of the case, it is forbidden to operate the device, which can lead to fire, in which case an immediate replacement of the battery is required.

Forced reboot and button reaction

Sometimes the Android operating system or MIUI shell goes into deep sleep or freezes at the kernel level, causing the screen to go out and the phone does not respond to external influences. Standard power button retention may not work. In such cases, the method of forced reset (Hard Reset buttons), which does not delete data, but only breaks the power cycle.

To perform this procedure on Xiaomi Redmi 4, you need to press the on button and the volume button (+) simultaneously. Hold them for 10-15 seconds. If the phone is working, you should feel a slight vibration or see the Mi logo. This action relieves static voltage from the controller.

If the volume button combination didn't work, try to only hold the power button for a long time, up to 30 seconds. Some board revisions respond to this signal. It's also worth checking the button sticking: if the power button is mechanically damaged and "sitting" inside the case, the phone may constantly try to turn off or reboot.

It's important to distinguish between the reaction of the device, and if you feel vibration, but the screen is black, it's probably the display or the plume, and if the phone is completely dead and it's not vibrating, then the power circuit is not closing, and you have to dig deeper into the hardware.

⚠️ Warning: Don't try to disassemble the phone while it's connected to the charger.A short circuit on the board can incapacitate the power controller or processor.

Diagnostics through Recovery and Fastboot modes

One of the most effective ways to tell if a phone is alive is to try to log into service modes, and unlike normal boot, Recovery Mode and Fastboot are launched before the operating system boots, which eliminates program files errors, and if the phone responds to login, the processor and core components are in good working order.

To enter Recovery mode on Redmi 4, you need to turn off the phone (if it's on) and press the power button along with the volume button (+). When the logo appears, release only the power button, while continuing to hold the volume. You should see a menu with a black or orange background and a few points.

Fastboot mode is enabled by pressing the power button and the volume down button (-). The screen should appear a bunny fixing the android, labeled Fastboot. If the phone enters these modes but does not load in its normal state, the problem lies in the damage to system files or conflict updates.

You can try Wipe Cache on the Recovery menu, which often solves download problems. However, be careful: Wipe Data will completely delete all your photos and contacts. Before any action on this menu, make sure you understand the consequences.

Software problems and cyclical reboot

A common problem with Xiaomi owners is the so-called bootloop, where the phone turns on, shows the logo, goes out and turns on again, which can occur after a failed system update, installing incompatible applications or overflowing memory, in which case the system cannot pass the initial stage of booting.

If the phone goes into cyclical reboot, try booting into Safe Mode. When you turn on when the Mi logo appears, you need to quickly press and hold the volume button. In Safe Mode, only system applications load. If the phone is turned on, delete the last installed programs.

A more radical method is factory resetting via Recovery. Remember, this action will delete all user data. If the information on the phone is not important or there is a backup, this step often brings the device back to life. Select Wipe Data and confirm the action.

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Cyclical reboot is treated with a full reset (Wipe Data) in 80% of cases, but requires a backup of the data.

Sometimes the cause of failure is a lack of space in the system partition, if the memory is filled to the end, the operating system can not create temporary files and falls, in which case only the flashing of the device through the computer using the Mi Flash Tool utility will help.

Hardware malfunctions: display and plumes

There are situations where the phone is working (notification sounds, calls, vibrations are heard), but the screen remains black. Owners often think the phone is not turning on, although the problem is localized to the display module. On Redmi 4, the display plume can move away from the board after falls or heavy impacts.

You can check this by calling the number of the malfunctioning phone, if it's ringing, it's on, and you can also connect the phone to the computer, because if the PC is making a sound of the device connecting, then the hardware is working, and you need to change the display module or solder the plume.

Another hidden problem is the backlight dump, which is that if you look at the screen in bright light, you can see a very subtle image of the interface, which means that the matrix is intact, but the backlight power circuit or the LED itself has burned, and repairing this malfunction requires soldering at the service center.

• 📞 Call the phone – if it is a beep, then the problem is in the screen.
• 🔦 Light a flashlight close to the screen – can you see the image?
• 🔌 Connect to a PC – is the device defined as a media file?

Don't disassemble your phone yourself to replace the screen if you don't have experience.The screen in Redmi 4 is glued to the frame, and a careless autopsy can damage the touchscreen or additional plumes.

Critical breakdowns of the motherboard

The worst case scenario is the motherboard's components fail. Xiaomi Redmi 4 (especially the Prime version on the Snapdragon processor) has experienced a manufacturing defect involving a CPU or memory dump due to overheating, with the phone heating up in the camera area but not turning on, or the power supply warming up when connected.

Also, the power controller (PMIC) often fails, and it distributes the voltage to all the circuit boards, and if it burns, the phone can show signs of life (an indicator), but it can't start the system, and it requires specialized equipment and a microscope to diagnose this malfunction.

⚠️ Warning: If your phone falls into water, don't try to charge it! The water will short circuit. Bring the device to the service immediately for ultrasonic cleaning, even if it's still on.

Motherboard repairs are often not cost-effective for models of this age, as the cost of work can exceed the cost of a used device. However, if the problem is in a single burnt capacitor or charging connector, a skilled craftsman can restore the phone for a reasonable amount of money.

When professional repairs are needed

If all the software methods, including resetting and flashing, have failed, and the phone still shows no signs of life, all that remains is hardware repair. To climb inside with a soldering iron without experience is the risk of finally finishing the device off. Professionals use thermo-air soldering stations and microscopes for accurate diagnosis.

The service center will take measurements of current consumption. If the current is zero, the circuit breaks. If the current jumps, the short circuit is short. If the current is there, but the phone doesn't start, the problem is in the processor or memory. That's the only way to accurately name the cause and cost of recovery.

Remember that Xiaomi Redmi 4 is a reliable device, and often its "death" is exaggerated. Proper diagnosis in 7 out of 10 cases allows you to return the gadget to a full life.

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