Xiaomi’s modern smartphones have gained immense popularity due to their excellent price-to-function ratio. However, users often face situations where the device begins to behave unpredictably: slows down, discharges in a couple of hours or refuses to turn on at all. The question of why Xiaomi’s phone has such problems worries thousands of owners around the world.
The reasons can be software-related, MIUI or HyperOS-related, or hardware-based, depending on the physical state of the components. Understanding the root of the problem is the first step to solving it successfully. In this article, we will discuss in detail the main factors that affect the stable operation of the gadget and how to fix them.
Don't panic if your smartphone is slowing down or strange artifacts appear on the screen, and in most cases, you can fix the situation without going to the service center, and the main thing is to act consistently and not ignore the first signs of malfunction.
Software failures and operating system overload
One of the most common reasons why Xiaomi phones have problems is software overload. MIUI shell is famous for its functionality, but the abundance of background processes can lead to a shortage of RAM, which is especially true for budget models with limited RAM.
When RAM is overflowing, the system aggressively unloads applications, causing them to reboot constantly every time they start, noticing delays in switching between windows and long interface response, often after a firmware update, when old cached data conflicts with new system files.
To diagnose a situation, go to Settings → Phone → Memory. You can see which apps are consuming the most resources. If you see processes you are not using, you better delete them or disable them.
Also worth paying attention to is the number of widgets installed on the desktop: Live wallpaper and news widgets consume significant CPU resources, and optimizing the autoload of applications will help reduce the load on the system when the device is turned on.
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Use the built-in Security app to clean up your memory, but don’t rely on it entirely – manual background control is more effective.
Problems with the display and touch layer
The question of why Xiaomi's phone doesn't have a part of the screen or "phantom" taps is often related to the quality of the matrix or touchscreen. Budget models use TFT technology or cheap IPS panels that are sensitive to temperature changes and mechanical pressure.
If the screen reacts with a delay or opens applications spontaneously, it can indicate damage to the display plume. Even microscopic tearing of contacts inside the housing can cause chaotic behavior of the sensor. Sometimes the problem lies in static electricity that accumulates on the surface of the glass.
⚠️ Attention: If colored bars or spots appear on the display that do not disappear after rebooting, the matrix itself is most likely damaged.
To check the uniformity of the glow and the presence of broken pixels, you can use special test images. It is also worth checking the screen refresh rate settings. From the Settings menu → Screen → Update frequency, try switching the mode from 120 Hz to 60 Hz. This can temporarily solve the problem of unstable touchscreen operation.
Why is the screen yellowing around the edges?
Fast battery discharge and charging problems
Many users are wondering why the Xiaomi phone is fast to run out of battery, even though yesterday the device held charge for two days. The main reason lies in the natural wear of the lithium-ion battery. After 500 cycles, the capacity drops by about 20%, which becomes noticeable in everyday use.
However, if the battery is discharged to zero in 2-3 hours of active screen, it is worth checking the background activity of applications. Social networks and instant messengers often prevent the processor from going into deep sleep, constantly asking servers for new messages.
To extend the life of the battery, it is recommended to follow simple operating rules:
- 🔋 Do not allow full discharge to the 0% — Try to put your phone on charge when you charge. 15-20%.
- 🌡️ Avoid overheating the device – do not leave your smartphone in the sun or near heating appliances.
- ⚡ Use original cables and power supplies with Quick Charge support.
- 📉 Disable unnecessary functions: GPS, Bluetooth and NFC, If they are not in use right now.
Importantly, the charging optimization feature built into MIUI helps extend battery life by learning your habits, slowing charging after reaching 80% if you normally sleep during this time.
☑️ Diagnostics of the battery
Failures in the operation of communication modules and Wi-Fi
When Xiaomi’s phone loses internet or has a continually slow connection speed, it can be caused by a network confluence. Operators periodically change the settings of APN access points, and the old settings may stop working correctly. This is a common reason why Xiaomi’s phone doesn’t have 4G, although the network coverage is excellent.
Wi-Fi problems are often associated with frequency range. If the router is running in the congested 2.4 GHz band, interference from microwave ovens and neighbor networks is possible. Switching to 5 GHz usually solves the speed problem, but reduces the signal range. It is also worth checking whether the traffic saving mode is included, which limits the background data transmission.
To reset network settings, follow the following steps:
- Go to Settings → Connection and Sharing.
- Select Reset Wi-Fi, mobile networks and Bluetooth.
- Click the Reset button and confirm the action.
After this procedure, the phone will restart, and all network settings will return to factory values. You will need to re-enter passwords from Wi-Fi networks.
| Problem. | Probable cause | Decision |
|---|---|---|
| Not catching the net. | Wrong APN settings | Resetting network settings |
| Weak Wi-Fi. | Interference or cover | Changing router channel |
| No 4G. | SIM-card of the old sample | Replacement of SIM from the operator |
| Bluetooth is broken. | Conflict of versions | Removal of conjugation |
If the problem persists after the reset, it may be the antenna module, which requires a diagnosis at the service center.
Processor overheating and trottling
The heat of the case is a protective reaction of the smartphone to high load, and when the temperature of the processor reaches critical values, the system artificially lowers its frequencies to avoid damage, a process called trottling, at which point the phone can run very slowly, and the games will go in snatch.
The main causes of overheating are heavy games, long-term high-resolution video shooting or using a navigator when the screen is turned on in bright sun. Heating can also provoke the use of poor-quality covers that disrupt the heat sink. A dense silicone or skin acts as a thermos, preventing heat from coming out.
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Short-term heating when charging fast or starting games is normal. Constant heating in standby mode indicates a malfunction.
To lower the temperature, close all running apps and turn off the screen for a few minutes. Do not put the charging phone on soft surfaces (sofa, bed), as this blocks ventilation. In the summer, try not to leave the gadget in the car in direct sunlight.
⚠️ Warning: If the phone heats up to a point where it hurts to hold it, turn it off immediately. Prolonged overheating can cause the battery to bloat and the display to detach.
Frequent Questions and Answers (FAQ)
Below are the answers to the most popular user questions that will help you quickly understand typical situations.