Why Xiaomi’s Smartphones Are Not Opening and How to Fix It

You are trying to open your calendar on your Xiaomi Redmi, POCO Or Mi, but the app persists in not starting, crashing out, or showing a blank screen? This problem is more common than it seems — according to service centers, one in 5 device owners on the Internet is not allowed to use the device. MIUI It has similar problems, and the causes can be both shell software errors and conflicts with Google services or third-party applications.

In this article, we will discuss 10 main reasons why the calendar stops working on Xiaomi, from a banal cache failure to deep problems with account synchronization. MIUI 12-14), a table of compatibility between different versions of firmware, and unique ways to recover calendar data if it is lost after a reset, and we will focus on the problems after updates, which are responsible for 60% of support requests.

1.Cache failure of Calendar app

The most common reason for the calendar to freeze is a crowded or damaged cache. MIUI The app cache doesn't clear as obviously as it does in "pure" Android, so many users miss this step:

• 📅 Long-term use without rebooting (more than 7 days)
• 🔄 Automatic updates to the app via Google Play
• 📱 Install themes or fonts from the Mi Theme Store
• 🔌 Connections to unstable networks (such as public Wi-Fi)

To clear the cache:

1. Go to Settings → Applications → Application Management.
2. Find Calendar (or Calendar in English firmware).
3. Slip the vault. → Clear the cache.
4. Reset the device (required!).

Important: If the calendar doesn't open after cleaning the cache, try to delete the app data (Clear Data). But be careful, this will delete all local events! They can only be restored through synchronization with Google Account or Mi Account.

2. Conflict with Google Services

On Xiaomi devices with GMS (Google Mobile Services: Calendars are often dependent on three key services:

1. Google Calendar Sync – is responsible for synchronizing events.
2. Google Play Services – Makes the Job Work API;
3. Google Account Manager – manages the authorization.

If one of these is not working properly, the calendar can:

• 🚫 Do not open at all (black screen or error);
• ⏳ «Hang on" on the boot;
• 🔄 Close independently in 2-3 seconds.

Check the status of the services:

1. Open Settings → Accounts and Sync → Google.
2. Make sure the calendar switch is on.
3. Go to Settings. → Annexes → All apps and find Google Play Services.
4. Slip the Warehouse → Space Management → Clear all data.

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If the calendar doesn’t work after cleaning Google Play Services, try turning it off. VPN Proxies – they can block access to synchronization servers.

For devices without GMS (For example, Xiaomi for the Chinese market, the problem may lie in the absence of Google Calendar API. In this case, you will need to set a calendar through APK Or use alternatives like Etar or Simple Calendar.

3. synchronization errors with Mi Account or Google

Xiaomi's calendar can sync with both Google Account and Mi Account. If sync is lost, the app will either not open or show outdated data. Common signs of a problem are:

• 📅 Events disappeared after update MIUI;
• ⚠️ Notification: Synchronization is stopped»;
• 🔄 Calendar "hangs" on the loading screen.

To restore synchronization:

1. Open Settings → Accounts and Synchronization.
2. Select Google or Mi Account (depending on the account you use).
3. Turn off calendar sync, wait 30 seconds and turn it on again.
4. If it doesn’t work, delete your account and add it again.

Critical error: If you add a Google Account and you see a message that you couldn't connect to the server, the problem may be incorrect security certificates, this is true for devices with custom firmware or after manual update.

Settings → System → Additional → Developer Settings → Delete all certificates (reboot is mandatory!)

4. Damage to system files after update MIUI

Updates MIUI (particularly airborne» OTA) Sometimes they cause damage to calendar files:

• 🔄 Interrupted update process (for example, due to a discharged battery);
• 📱 Conflict with established themes or patches;
• 🛠️ Unofficial firmware (for example, Xiaomi.EU or PixelExperience).

Symptoms of system file damage:

• 🚫 Calendar crashes with error com.android.calendar stopped working;
• 📱 The app opens but does not display events;
• 🔄 After the restart, the calendar does not work again.

Decisions:

1. Resetting calendar settings: Settings → Annexes → Calendar → Additionally. → Resetting settings
2. Safe Mode Recovery: Press the power button before the turn off menu appears. Press and hold the turn off option, you will be prompted to go to Safe Mode. Check the calendar in Safe Mode. If it works, the problem is in a third-party application.
3. Update reinstallation: Download the full firmware package for your model from Xiaomi’s official website and install it through Settings → The phone. → Updating the system → Three points. → Select a firmware file.

5. Memory shortage or conflict with other applications

Xiaomi calendar may not open due to lack of RAM (RAM) This is especially true for budget models (Redmi). 9A, POCO C31) from 2-3 GB of RAM. Signs:

• 📱 The phone slows down when the calendar opens;
• 🚫 A notification is given “Insufficient memory»;
• 🔄 The calendar closes on its own in a few seconds.

How to free up memory:

1. Remove unused applications through Settings → Annexes.
2. Clear the system cache: Settings → Warehouse → Cache data → OK.
3. Turn off autoloading of unnecessary apps: Settings → Battery and productivity → Autostart control
4. Transfer photos and videos to SD-Map or cloud (Google Photos, Mi Cloud).

Conflict with other apps is another common reason, for example, a calendar may not open because of:

• 🔒 Advertising blocking applications (AdGuard, Blokada);
• 🛡️ Antivirus (Avast, 360 Security);
• 📱 Launchers (Nova Launcher, Hyperion).

To identify the "culprit":

1. Go to Safe Mode (as described above).
2. If the calendar works, delete apps one at a time until you find a conflicting one.

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On devices with 2 GB of RAM (Redmi) 8A, POCO C3) calendar may not open due to background optimization MIUI. Add it to exceptions: Settings → Battery → Choice of applications → Calendar → No restrictions.

Hardware problems (damage to memory or module) NAND)

If none of the software solutions worked, the problem could be a hardware failure, which is true for devices that:

• 💥 Falling from a height;
• 🌡️ Overheated (for example, during charging);
• 🔋 Have a worn-out battery (more than 500 charging cycles).

Symptoms of hardware problems:

• 🚫 The calendar does not open, and other applications are working;
• 📱 The phone spontaneously reboots;
• 💾 Memory reading errors appear (com.android.providers.calendar process stopped).

Diagnosis:

1. Check the memory status with Mi Diagnostics: ##4636## → Testing of equipment → Memory.
2. Use the app. AIDA64 (storage → NAND Note the Reallocated Sector Count setting – if it is larger than 10, it is a sign of memory wear and tear.

⚠️ Note: If tests show read/write errors, do not try to reset settings - this may aggravate the problem. eMMC/NAND.

Temporary solution (if the calendar is critical):

• 📱 Set an alternative calendar (Etar, DigiCal) and transfer events through export/import.ics file.
• 🔄 Turn off sync with Mi Account if it is enabled – this will reduce the memory load.

7. Calendar blocking with antivirus or firewall

V MIUI There's a built-in Firewall and Virus Protection, which sometimes mistakenly blocks system applications, including the calendar:

• 🔄 Security updates;
• 📱 Installation of third-party antivirus;
• 🛡️ Security Security and Clean Master (360 Security and Clean Master).

How to check the lock:

1. Open the Settings. → Annexes → Security → firewall.
2. Find the calendar in the list and make sure it is not blocked.
3. Go to Settings. → Annexes → Security → Virus scanner → Check the log and see if there have been any blockages.

If the calendar is blocked:

1. Slip it on the firewall list and select Allow.
2. Add it to the antivirus exceptions (e.g. in Avast: Settings) → Exceptions).
3. Turn off optimization. MIUI for the calendar: Settings → Battery → Choice of applications → Calendar → No restrictions.

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If you use Xiaomi without GMS (For example, in Chinese, the built-in firewall can block access to Google servers. Solution: disable Traffic Protection in Settings → Connections → Special facilities → Traffic protection.

8.Reset settings to factory (last chance)

If all the previous methods failed, you'll have a hard reset, which will delete all the data from the device, so first you have to:

• 📱 Make a backup copy through Settings → Additionally. → Backup and reset;
• 🔄 Export calendar events to.ics (if the calendar opens sometimes);
• 📅 Sync events with your Google Account or Mi Account.

Resetting instructions:

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. Confirm the action and wait for the reboot.
4. After reset, do not restore data from the backup immediately – check the calendar first.

⚠️ Note: On some models (Redmi Note 10 Pro, POCO X3 Pro) after reset, you may need to re-assign Mi Account. If you forget your password, use the official recovery site.

Alternative method (for advanced users):

If the reset didn't work, try flashing the device through Fastboot with a full partition cleanup.

1. Download the Mi Flash Tool and firmware for your model.
2. Transfer the phone to Fastboot mode (clip Power + Volume down).
3. In the Mi Flash Tool, select the Clean All option and start firmware.

FAQ: Frequent questions about calendar issues on Xiaomi