Full setup Xiaomi Redmi 9A: From the first launch to the hidden functions

Xiaomi Redmi 9A It remains one of the most popular budget smartphones even in 2026 – thanks to balanced performance, long support for updates. MIUI But out of the box, the device is not running at full capacity: factory settings are often overloaded with unnecessary services, and the interface is not working at all. MIUI This article will help not only to properly configure the smartphone after purchase, but also to optimize it for your tasks - whether it is saving charge, speeding up work or protecting personal data.

We'll take a step-by-step approach, from basic customization when first turned on to fine tuning for power users, and focus on the challenges faced by Redmi owners. 9A (For example, slow operation against a background of many processes or fast-setting battery, and give specific solutions. MIUI 14/15 Android-based 10/11.

If you've just unpacked your smartphone, start with the first partition. 9A already used, but “brakes” or discharges in half a day, go straight to the sections about optimization or resetting settings.

First Installing and Basic Setup

When you first turn on Xiaomi Redmi 9A, The system offers you to go through the initial setup wizard, and this is a critical step, and it's your choice to decide how much garbage you put on your device and how safe it will work:

• 🌐 Language and region choice: Install Russian (Russia) or other language you want. Region affects available services (e.g. Google Play or Mi Store).
• 🔌 Wi-Fi Connection: Use your home network, not mobile data – this will speed up the download of updates.
• 🔒 Lock setting: Select PIN-A code or a pattern lock. A fingerprint on Redmi. 9A No, but you can add a Smart Lock (unlock in trusted places) later).
• ☁️ Xiaomi Account: Make sure to create it – it will give access to the cloud backup, themes and features of Find Device (find your phone when you lose it).

In the personalization phase, the system will suggest enabling advertising personalization and activity tracking, disable both points – this will reduce traffic and battery consumption, and protect your data from Xiaomi’s collection.

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If the setup wizard is “hanging” during the update check phase, restart your smartphone by holding the power button for 10 seconds. After re-enabled, skip checking for updates (click “Skip”).

After completing the setup wizard:

1. Go to Settings. → About the phone and check the version MIUI. If it is older than 12.5, update (instructions in the next section).
2. Remove unnecessary apps: Mi Browser, Mi Music, Mi Video (if you don’t use it). To do this, hold the app icon and select Remove.
3. Turn off auto-run of unnecessary services: Settings → Annexes → Auto-start.

Firmware Update and Optimization MIUI

Xiaomi Redmi 9A received official updates prior to MIUI 14 (based on Android 11), but many users still use older versions.The firmware update solves security issues, adds new features and speeds up the system. Here's how to do it right:

Method 1: Through settings (recommended for beginners):

1. Open Settings → About the phone → System update.
2. Click Check Updates and wait for the latest version to download.
3. Connect the charger (the battery must be charged at least 50%).
4. Click Set and wait for the reboot (it will take 5-10 minutes).

Method 2: Manual installation (if automatic update does not work):

• 📥 Download the firmware for Redmi 9A (codename dandelion) from Xiaomi's official website (select Recovery version) ROM).
• 📁 Move the file to the phone’s root folder (not to the folder!).
• 🔄 Go to Settings. → The phone. → Updating the system → Three dots (menu) → Select a firmware file.

After the update:

• 🔄 Reset the app cache: Settings → Annexes → Application management → Three points. → Clear the cache.
• 🚫 Turn off auto-update apps in Google Play (saves traffic and battery).
• ⚡ Enable Performance Mode: Settings → Special facilities → Performance mode (accelerates animation).

Download the firmware from the official website|Connect the charger|Battery charge ≥50%|Backup of important data|Shut down. VPN (can block the loading)

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Optimization of battery and autonomy

Redmi 9A It's equipped with a 5,000mAh battery, but many users complain about fast discharge, and it's because of the background activity of the apps and the suboptimal settings. MIUI. The following steps will help to extend the working time:

Battery mode setting:

• 🔋 Go to Settings. → Battery and productivity → Battery mode.
• 🌙 Choose Charge Saving (if you want maximum autonomy) or Balanced (optimum option).
• ⚡ Disable Smart Charge Distribution – This feature often doesn’t work properly.

Limitation of background activity:

• 📱 B Settings → Annexes → App management select the most “gluttonous” app (like Facebook or Instagram).
• 🔄 Click Limit Background Activity and Disable Auto Start.
• 📴 For system applications (such as MiuiDaemon) use Clear cache once a week.

Additional advice:

• 🌡️ Turn off automatic brightness and set the value to 40-50%.
• 📡 Turn on Night Flight Mode or in Bad Signal Areas (Constant Network Search Saves Battery).
• 🔌 Use the original charger (10W) — Fast charging on this smartphone is not supported.

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The most “voracious” features on Redmi 9A: Constant synchronization of accounts (Google, Mi), background work of messengers and geolocation. Disabling at least one of the items adds 10-15% of autonomy.

Speeding up work and cleaning up memory

Redmi 9A Powered by MediaTek Helio processor G25 And 2-3 GB of RAM, which is not enough by modern standards, but even with this hardware, you can achieve smooth operation if you set up the system correctly and clean it of garbage.

1. Cleaning of cache and unnecessary files:

• 🧹 Use the built-in Cleanup utility (Settings) → Cleanup. It deletes temporary files, cache and remnants of deleted applications.
• 🗑️ For deep cleaning, install SD Maid (from Google Play) and run a scan on CorpseFinder (search for software residues).
• 📂 Move heavy files (photos, videos) to microSD (up to 512GB cards supported).

2. Optimization of RAM:

• 🔄 Enable Memory Cleanup When Locked: Settings → Special facilities → Cleaning up memory.
• 🚫 Disable interface animation: Settings → The phone. → Version. MIUI (press 5 times to enable developer mode → Additionally. → For developers → The scale of the window/transition animation (set) 0.5x or off)
• 📱 Use lightweight versions of apps (e.g. Facebook Lite, Messenger Lite).

3. reset to factory settings (if nothing helps):

If the smartphone is severely slowed even after cleaning, perform a hard reset:

1. Make a backup copy of important data (photos, contacts, messages).
2. Go to Settings → About Phone → Resetting → Erase all data.
3. Confirm the action and wait for the reboot (it will take 5-7 minutes).

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After reset, do not restore data from the backup MIUI — It's going to bring back the old settings and the garbage, and it's better to just move the contacts and the photos by hand.

⚠️ Note: Do not use applications such as Clean Master or DU Speed Booster — they don't speed up the smartphone, they just clog it with ads and background processes. MIUI clean up.

Network and Internet setting

Redmi 9A supportive 4G LTE, But often, users have problems, like slow Internet, connection breaks, or no signal:

1. Optimization of mobile Internet:

• 📶 Go to Settings. → SIM-maps and mobile networks → Mobile network settings.
• 🔄 Select Only. 4G (preferably, this will prevent the switch to slow 3G/2G.
• 📡 Include Improved Coverage 4G (if available).
• 🔄 If the speed is low, try manually selecting the operator: Network Search → Manual scanning.

Wi-Fi settings:

• 🌐 Turn off Autoconnection to open networks (Settings) → Wi-Fi → Additionally).
• 🔒 Use static. IP, If the router often “resets” the device: → Wi-Fi → Hold your network. → Change the network → Show additional parameters → Settings IP (Manually indicate IP-address within the range of your router (e.g. 192.168.1.100).
• 📶 Turn on Wi-Fi Assistant (automatic switch to mobile data at a weak signal).

3. Solving connection problems:

• 🔄 If the Internet is lost, restart your smartphone and router.
• 📱 Reset network settings: Settings → SIM-maps and mobile networks → Resetting network settings.
• 🔧 Update. IMEI (If the smartphone does not catch the network after firmware: How to update IMEI on the Redmi 9A? 1. Dial in ##4636### and select Phone Information. 2. Scroll down to Update IMEI 3. Reset the device and confirm. ⚠️ Don't change. IMEI manually, it's illegal!

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If the smartphone does not see 4G, Check if your operator supports this frequency in your area, for example, Tele2 in some areas only works on the radio. 3G.

Security and confidentiality

MIUI It is known for its “curiosity” to user data, and Redmi is a big fan of the game. 9A To protect your personal information and prevent leaks, follow the following steps:

1. Xiaomi's surveillance shutdown:

• 🔍 Go to Settings. → Confidentiality → Special permits → Application authorizations.
• 🚫 Disable geolocation, microphone and contacts for system applications (MiuiDaemon, Security, Analytics).
• ☁️ B Settings → Xiaomi account → Mi Cloud disable synchronization of unnecessary data (notes, calendar).

2. Protection against viruses and fraudsters:

• 🛡️ Install Malwarebytes (free version) and perform a scan.
• 🔒 Google Play Protect: Play Market → Menus. → Play Protect.
• 📱 Disable the installation of applications from unknown sources: Settings → Confidentiality → Unknown sources.

3. Lock and encryption settings:

• 🔐 Install. PIN-a code of at least 6 digits or a pattern lock of a complex shape.
• 📱 Enable Smart Lock to unlock in secure locations (home, work): Settings → Screen locking → Smart Lock.
• 🔒 Encrypt the device (takes it). ~30 minutes: Settings → Additionally. → Encryption and credentials → Encrypt the phone. ⚠️ Before encryption, charge the battery 80% and connect charging!

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To check which apps are following you, install Exodus Privacy (from F-Droid) to show all trackers in the installed programs.

⚠️ Warning: Do not use Clean Master or similar “optimizers” – they often contain their own trackers and impair performance. MIUI.

Hidden features and life hacks for Redmi 9A

MIUI It hides a lot of useful features that most users don't know about. 9A:

The "Second Space" mode (dual system):

This feature allows you to create a second independent profile with separate applications and data – useful for working or distinguishing between personal and service.

• 🔄 Go to Settings. → Special facilities → Second space.
• 📱 Follow the instructions for setting up (required) ~1 GB of free memory).
• 🔒 Switch between spaces can be swiped down the lock screen.

2.Gestural and quick action:

• 👆 Double touch to wake up: Settings → Lock screen → Double touch to wake up.
• 🔄 Screenshot gesture: swipe three fingers down the screen (included in Settings) → Special facilities → Screenshot gesture).
• 📱 One-Hand Mode: Swipe on the Home to Left or Right button (for gesture screens: swipe from the bottom edge to the center).

Sound optimization:

• 🔊 Turn on the headphone amplifier: Settings → Sound. → Headphones → Sound amplifier.
• 🎵 Set up an equaliser in Mi Music (even if you don’t use players, it affects system sounds).
• 🔕 Turn off system sounds: Settings → Sound. → Systemic sounds.

4. Traffic savings:

• 📡 Turn on Traffic Savings: Settings → SIM-maps and mobile networks → Saving traffic.
• 📱 Limit background traffic for apps: Settings → Annexes → Data management.
• 🌐 Use Opera Mini instead of Chrome – it compresses traffic to 90%.

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The Second Space feature creates a completely isolated profile with a separate desktop, apps, and even a single desktop. IMEI. This is useful if you want to separate personal and work data or test apps without risking the underlying system.

Frequent problems and their solutions

Even after setting up the Redmi correctly 9A It can be unstable. Here's a list of the typical problems and how to fix them:

Additional advice:

• 🔄 If the smartphone does not turn on, hold the power + Volume up 10-15 seconds for forced reboot.
• 📱 If the sensor isn't working, check if there's a bubble shield. Try rebooting the device.
• 🔊 If the sound is missing, check if the Do Not Disturb mode is activated (Settings) → Sound. → Don't disturb).

⚠️ Warning: If after updating the firmware smartphone began to "lay down", reset the cache via Recovery: Turn off the phone. + Volume up until the Mi logo appears. Select Wipe Cache (use volume buttons for navigation, power for confirmation) Reboot the device (Reboot.

FAQ: Answers to popular questions