Smartphones Xiaomi have earned popularity due to a good ratio of price and capabilities. But, like any technique, they are "capricious" from time to time. Most of these failures do not require a service center - they can be easily fixed on your own. The material is collected the most common problems of Xiaomi smartphones and simple instructions, how to return the device to normal operation, also on the page https://sklyar.te.ua/blog/ you can find even more useful information.

The smartphone discharges quickly

reason: MIUI background services, unnecessary applications, high power consumption mode.

How to fix it quickly:

• Open Settings → Battery and performance → Application power consumption and turn off unnecessary programs in the background.
• Turn on MIUI optimization (in the section "For developers", if it is disabled).
• Verify autostart: "Security → Autostart" and turn off the unnecessary.
• Update the system: sometimes it is the MIUI patch that fixes the excessive power consumption.

The smartphone slows down or freezes

reason: Cache overflow, lack of RAM, a bug in the firmware.

Decision:

• Perform reboot — in MIUI it really clears the RAM.
• Clear the cache: Security → Speed ​​up → Clean.
• If there is a function RAM expansion, turn it on: "Settings → Additional → RAM expansion".
• Check for MIUI updates.

Problems with Wi-Fi or mobile Internet

reason: A failure in the network settings, conflict with power saving mode.

what to do:

• Turn Airplane mode on and off.
• Reset network settings:
  Settings → Connection and sharing → Wi-Fi reset, mobile networks and Bluetooth.
• If Wi-Fi “falls off” in standby mode, turn it off:
  Battery → App power saving → Android system → Do not limit.

The screen sensor does not respond or "lives its own life"

reason: System failure, moisture, protective glass of low quality.

Quick solutions:

• Reboot the device.
• Log in to Tools → Testing → Touch Screen (through Code CIT: in "Phone" dial *#*#6484#*#*).
• Remove the protective glass and check the operation of the screen.
• Dry the device, if there are signs of moisture.

Slow camera or startup error

Reasons: Bugs in the camera application, lack of memory, conflict with third-party filters.

How to solve:

• Clear camera cache:
  Settings → Apps → All apps → Camera → Clear cache.
• Remove or disable third-party photo editors/filters.
• Make sure, that there is at least 1-2 GB of free space in the memory.

Speaker not working or silent

reason: Dust accumulation / audio services failure.

Correction:

• MIUI has it speaker cleaning function:
  Settings → Advanced → Clear speaker.
• Check the volume settings in Media → Ringtones → System sounds.
• Clear the sound cache by restarting.

Ads appear in the menu or settings

reason: Enabled "MSA" and personalized recommendations.

You can quickly disable advertising as follows:

• Disable the MSA service:
  Settings → Passwords and security → Authorization and cancellation → MSA → Off.
• In every system application (Files, Music, Those) turn off "Recommendations".

The smartphone does not see the SIM card

reason: Firmware failure or incorrect SIM holder contact.

what to do:

• Reboot the phone.
• Pull out the SIM, to wipe, insert back.
• Reset network settings.
• Change the network mode to "4G/3G/2G (cars)».

Messages do not work or push notifications do not arrive

reason: MIUI "kills" applications in the background.

How to solve:

• For important applications, set the "No restrictions" mode:
  Settings → Battery → App power consumption → Select app → Unlimited.
• Enable autorun:
  Security → Autostart → Allow.
• Turn off MIUI energy saving optimization for the required programs.

Smartphone overheating

reason: Games, charging with a non-original adapter, working in a hot environment.

Quick ways to cool down:

• Remove the cover.
• Disallow heavy background applications: "Security → Acceleration".
• Update games/system.
• Do not place the phone under a pillow or blanket while charging.

Conclusion

Xiaomi has its own characteristics, but most common problems can indeed be solved in 1–3 minutes, without a service center. Regular system updates, clearing the cache and correct power consumption settings are the key to stable smartphone operation.