Xiaomi Mi and Redmi lines won't charge and won't turn on

Charger

Let's start, perhaps, with the simplest and most obvious. First, let's check the functionality of the charging kit. Since it consists of two parts: a cable and a power supply. You need to make sure that each one is working individually.

The most common cause is a broken cord, especially at the connector attachment point. There is only one remedy - replace the cable with a new one.

Attention! If you have already replaced the cord and the problem remains, make sure that the new element is original or has the same technical characteristics as the cable from the original package.

The lack of charging from the computer does not always depend on the performance of the cord. For example, an old OS is installed on a PC, possibly Windows XP, and the charge does not pass through - the computer software simply could not recognize the connected device.

Charging problems aren't limited to broken cables. Next in line is the power supply and checking its functionality. To do this, connect it to another cable and try to charge the phone. If the device does not respond, then it is time to change the power supply.

It is worth mentioning that when using a non-original element, charging may not be possible due to technical incompatibility, while the unit itself is fully functional.

Prevention

Xiaomi users have developed their own ways to deal with poor battery charge. For example, they recommend turning off your phone's navigation function and not using it while it's charging. The phone should be checked for viruses and programs that slow down the operation of the gadget should be removed. If the new firmware turns out to be heavy, you should turn to the simplified version. Similar steps should be performed if the device stops charging after updating the shell.

Xiaomi owners themselves have developed an effective way to eliminate bugs. Beginner users are asked to remove the cover from the back of the phone, disconnect the battery and snap off the cable, connect Xiaomi to a power outlet via the charger and turn on the smartphone. After this, the cable is reconnected to the motherboard. Half of Xiaomi charging problems are solved this way. Before troubleshooting charging problems, you should find out why Xiaomi is not charging. After all, an incorrectly selected solution can cause other malfunctions. If the results of self-diagnosis do not clarify the situation, you should contact the service center specialists. They often conduct free diagnostics of gadgets, explain what caused the problem and how to fix it. If the warranty period has not expired, and the phone broke down through no fault of the user, you can fix the problem under warranty.

Xiaomi is not charging

USB port

There are several reasons:

Debris has entered the slot. This happens when the owner constantly carries a gadget with him. It is enough to clean it with a soft brush or blow it with air under pressure.
The contacts of the USB port have oxidized. This happens when the phone is used in high humidity, for example, in the bathroom. Another reason for oxidation is its rare use. To solve the problem, moisten the needle in alcohol and clean the contacts. Movements should be careful, do not overdo it with liquid.
When the computer does not see the phone via USB, eliminating problems with the software, all that remains is a malfunction of the computer connector or cable. Check the connection on another device.

If the device does not turn on, but the cable is in good condition, it means the connector is loose. A common problem as it is subject to daily use. The only way to help here is to replace the part with a new one at a service center. Or a constant search for a position in which the contact will be stable, but still, sooner or later, you will have to go to the ACC.

Battery fault

It is enough to look under the hood of the phone to understand the condition of the battery. In working condition there should be no smudges, signs of heaving or swelling. Are all these signs not observed? Then all that remains is to measure the battery capacity with a multimeter, available at any service center. The fact is that each battery has a certain reserve of charge-discharge cycles, after which the battery can only be replaced.

Important! You should only purchase the original item. Cheap options last 2-3 times less and are unsafe.

Functionality check

If the Redmi Note does not charge, you need to check the main components of the system - the charger, socket and battery.

Checking your phone battery for performance using a multimeter.

Charger

If the adapter and cable are working properly, pay attention to the brand of the charger used.

Some devices are not capable of charging Xiaomi smartphones. You can check the charger by connecting another phone.

USB port

You can check the connector by trying to connect the Xiaomi Redmi 4x to the computer using a working cable. If the PC does not recognize the connected device, the port is broken. Possible software incompatibility. The faulty input is replaced at the service center. Sometimes finding the correct position of the charger plug helps. This method temporarily solves the problem.

Phone battery

The battery condition can be assessed visually.

A malfunction is indicated by the presence of traces of electrolyte, swelling or corrosion of the contacts.

If there are no such signs, measure the battery capacity with a multimeter. After a certain number of charge cycles, the battery capacity decreases. In this case, it is disposed of. Only the original element is used as a replacement. Cheap analogues last no more than six months.

First days of operation

Xiaomi smartphones sometimes do not charge in the first days of use. One of the reasons is that the device is very discharged. Wait a few minutes and the red indicator will light up; it also requires energy, which the battery simply does not have.

Charging hasn't started? Use simple tips:

connect only to the original charger;
when replacing the charger with an analogue one, check the parameters: 2 amperes and 5 volts;
follow the sequence - first connect the cable to the power supply, only then plug it into the outlet;
When charging from a PC, insert the cable into the USB on the rear panel. If there are version 3 ports (blue), use them.

Battery

The Redmi 5 battery, like any other phone, has its own service life. This model is no longer new and it is very likely that charging is not happening due to the battery failure.

Sometimes batteries swell when broken, and they bend the back cover of the phone and it can be twisted around its axis by placing it on a flat surface, for example, on a table. If possible, you should send your Redmi 5 for repairs to replace the battery as soon as possible.

A swollen battery can spontaneously ignite at any time and cause a burn if the phone was in your pocket, or a fire if you put it on a bedside table or car dashboard.

If there is no swelling, you have already tried to replace the cable, charger and are sure that no system updates have been received on the Redmi 5 or Mi 5 in the last few days, the battery is probably still to blame and needs to be replaced.

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Battery calibration

Improper charging and discharging of the smartphone leads to the fact that it either charges too slowly or does not accept a charge at all. Another side of this coin is that the battery was charged to 100%, but after looking at the charging icon after 1-2 hours, the owner discovers that the device is again at zero. Calibration helps solve the problem. This is done in several steps:

Discharge the battery until the smartphone turns off on its own.
Remove the battery and wait a couple of minutes.
We insert it back, but do not turn on the device.
Connect the charger to it.
Wait until fully charged.
We repeat the second point.
Immediately after starting, unplug and let stand for another 15 minutes.
Use as usual.

Battery recalibration

If your battery works but doesn't reach 100% charge or takes too long to charge, recalibrating it may help. Actions are performed in accordance with the algorithm:

wait until the charge level reaches 0%. To speed up the process, you can turn on a resource-intensive game or program;
without turning on the phone, connect it to power and wait until it is 100% charged;
now disconnect the phone from the charger and remove the battery again;
After 2-3 minutes, insert the battery back and turn on the device.

Judging by user reviews, recalibration allows you to “shake up” the gadget’s settings, which resulted in slow charging or lack of charging.

Using "Frog"

When Xiaomi is not charging with a cable, you can use a “frog” - a universal charger that operates from the mains. Suitable for removable batteries only.

How to use:

Remove the battery. If it is not removable, you shouldn’t disassemble the device, it won’t help anyway.
Insert the frog into the battery and tighten it so that the frog contacts are on the plus and minus terminals.
Connect the battery and press TE (test button). If the green color lights up, the actions were carried out correctly.
If the indicator does not light green, then you have two options for the development of events. First, the battery is completely discharged and needs time to recharge; hold the clothespin together with the battery in the outlet for several minutes. The second is incorrect polarity. It needs to be changed. If the CH charge indicator does not blink.

Reasons for incorrect charging of the gadget

In addition to a complete refusal to charge, the process may not occur correctly, for example, the charge replenishment icon is present, but the process is very slow or the battery condition does not change even after a long period of time.

The main reasons that can trigger the problem:

The outlet for connecting the charger is clogged. Due to debris, dust or dirt getting inside, the processes during charging are disrupted. Therefore, carefully inspect the condition of the port and blow it out for cleaning using a compressed air cylinder. If it is missing, you can clean the outlet with a cotton swab or toothbrush. All manipulations are performed carefully to avoid damage to the contacts.
The USB cable is broken. If your Xiaomi phone does not charge due to a broken wire, then you should check with another smartphone. If it does not respond, then the problem is due to a broken cable. The power supply is checked in the same way.
Oxidation of the USB connector. Occurs due to moisture getting inside.
During operation, problems with the software may accumulate, for example, failures in the system or programs.
A less common but relevant cause is mechanical damage to the battery.

If the battery is physically damaged, there is no need to replace it.

Reset

If Xiaomi has not yet turned off, you decide to charge it, but the process does not start, then the problem may be hidden in a system failure. In this case, resetting the settings to the original version, or in other words, a hard reset, will help.

In a simple version, you can return to the original appearance in the phone settings. A more complicated method is to perform a rollback using recovery mode. Read in detail how to do this here.

In the store you can find interesting programs to save battery power and identify various system bugs. Free ones to consider include DU Battery Saver or Battery Doctor.

Battery calibration

Sometimes there are cases when incorrect battery settings cause a failure, as a result of which the charging process slows down significantly or stops completely. In the discussion using the example of Xiaomi Mi4, the issue of the impossibility of charging for some owners was considered, as a result of which the solution to the problem was the battery calibration method:

Completely discharge the battery, for example, by watching a video, so that the smartphone turns off on its own;
Remove the battery and wait a while, then put it back without turning on the device;
Connect the phone to a charger that is plugged into a socket and leave until the charge is fully restored for several hours;
Then disconnect the network device and remove the battery again for a couple of minutes;
Put it back in place and try turning on the phone.

At the end of these manipulations, most owners reported a significant improvement in the performance of the smartphone.

What not to do

Let's look at the main mistakes that smartphone owners make:

constant use of a car charger;
the desire to achieve one hundred percent battery charge;
Charging throughout the day or night.

Experts advise following a few simple recommendations to extend the life of the battery and the smartphone itself:

maintain an optimal charge level within 40-80%;
recharge your phone regularly;
Do not expose the device to temperature fluctuations. Do not overheat or overcool;
Once every two months, completely discharge the device.

Xiaomi, like any other smartphone, needs to be charged at least once a day. Although battery life can be extended by turning off the Internet, music and navigation, if it is not required, use the phone only for its intended purpose.

Correctly charging your smartphone will significantly extend the life of the battery and the device itself. Incorrect use of the charger or non-original cables reduces the performance of the battery.

Actions during reloading

Each mobile device, including Xiaomi Redmi 4, has its own period during which it needs to be charged. When the charge level reaches 100%, it is important to disconnect the device from the network in time.

Some models of modern smartphones, when the battery is fully charged but not disconnected from the network, automatically turn off.

It will not be possible to turn on your Xiaomi or Redmi mobile device for some time while recharging. The device should be left alone for a while (you shouldn’t touch it for half an hour).

On a note!
Do not press all the buttons and try to reboot in recovery mode. The smartphone will turn on itself after a while.

Charger

Most often, the charger breaks down, because it can not be unplugged from the socket for days, it can be treated rather carelessly, as a result of which its fragile inner world falls into decay.

Like a phone, the charger is sensitive to falls and environmental influences.

Diagnostics: if you tried to replace the cable and the charging process does not proceed, try replacing the charger, but before doing this, make sure that its current and voltage ratings do not exceed those of the original charger, otherwise there is a chance of burning the controller inside Xiaomi. If the replacement worked, then you need to buy a new one. If not, look further for the reason.

Solution: try replacing the charger with another similar one; if that doesn’t help, look further or go to service.

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