Full setup Xiaomi Redmi 9A: From the first launch to the finer parameters

Xiaomi Redmi 9A

MIUI

Despite the simplicity of the device, incorrect settings can lead to rapid battery discharge, lags or even overheating, and we will examine each step in detail, from unpacking and first turning on to optimizing the Redmi operation. 9A For specific tasks, whether it's games, social media, or using as a second phone, we'll focus on the common mistakes of beginners and how to avoid them.

The smartphone is powered by MediaTek Helio G25 s 2 GB of RAM, which is limited, but if you set it up properly, you can make the most of even this kind of "modest" iron, for example, turning off unnecessary background processes can increase battery life. 15-20%, a the correct display parameters will reduce the load on the eyes with prolonged use.

It is important to understand that Redmi 9A comes with a pre-set shell MIUI (It's usually version 12 or 13, which has its own features, some of which are hidden in deep menus, and others are turned on by default and only interfere with it, and we'll show you what you can safely turn off and what you can leave behind.

Preparing for the first inclusion: what to do before setting up

Before you start configuring your smartphone, follow a few preparatory steps that will save time and prevent typical problems in the future.

First, check the kit. In the Redmi box. 9A must:

• 📱 The smartphone itself (usually in protective film)
• 🔌 Charger (5V/2A or 10W)
• 🔌 Cable USB Type-C (length) ~1 metre)
• 📄 Short instructions and warranty card
• 🔧 Paperclip for the tray SIM-map

If something is missing, go to the store to replace it. It is especially important to check the charger, as many users find that it is not original, which leads to slow charging or even damage to the battery.

Second, prepare. SIM-map. Redmi. 9A Supports two nano-SIMs (or one nano-SIM) + microSD up to 512GB. If your card is of a different format, cut it in advance or use an adapter. SIM-The card slot for the memory card will be blocked - this is a hardware limitation of the model.

⚠️ Attention: Don't insert SIM-a card or memory card when the phone is on, which can damage the slot contacts. Always turn off the device before installing or removing the cards.

The third important thing is to charge before the first switch on, even though the box usually contains a partially charged smartphone (nearly a charger). 30-40%), It is better to connect it to the network. 15-20 minutes before setting up, this will prevent a sudden shutdown during system updates or app installations.

Also, prepare the details to log in to your Mi Account (or create it in advance at account.xiaomi.com). Without it, you won’t be able to use branded services like cloud storage or device search. If you don’t want to link your phone to your account, skip this step, but be aware that some features will be limited.

First Entry and Basic System Configuration

When the preparation is complete, you can start the first switch. Press the power button (located on the right side edge) on the 2-3 It's a few seconds before the Redmi logo comes up. 1-2 Minutes are normal, as the system performs initial initialization.

After downloading, you will be met by the MIUI Customizer. Follow the instructions on the screen, but pay attention to the key points:

• 🌍 Language selection: Install "Russian" (or other language you want). Please note that some system notifications may be displayed in English even when the Russian language interface.
• 📶 Connect to the network: Connect to Wi-Fi at this stage.Using mobile internet for the first setup can lead to additional costs if you have a limited rate.
• 🔄 System Update: If the system offers to upgrade, accept. The first update often contains critical bug fixes.
• 🔒 Mi Account: You can skip account binding here, but remember that without it, cloud services and device search will not work.

In the "Personalization" phase, you'll be asked to choose a theme. 9A You can choose a light theme, which is less loading when you draw the interface, which has a positive effect on battery life. You can turn on the dark theme later in the settings if you like it better.

One of the most important screens is "Setting up the lock screen." Here you can choose between:

• 🔢 Pattern (pattern lock)
• 🔢 PIN code (4-16 figure)
• 🔑 Password (alphanumeric combination)
• 👆 Absence of blocking (not recommended)

For Redmi. 9A The best option is a 6-digit PIN, which provides a good balance between security and convenience, avoid simple combinations like "123456" or dates of birth, which are easy to pick up.

⚠️ Note: If you choose fingerprint lock (if your model supports scanner), consider that Redmi is a good choice. 9A The sensor is on the back, and when you use the case, it can be unstable. Before setting it, remove the case and clear the sensor of fat or dust.

Once the customization wizard is complete, the system will suggest installing the recommended apps, and it’s better to uncheck all the boxes — most of these programs (e.g. Mi Browser, Mi Music, Mi Video) duplicate the features of Google services and only take up space. They can always be installed later from Google Play, if you really need them.

Optimizing performance and saving battery life

Redmi 9A It doesn't have a lot of powerful iron, so the right optimization will help make it work smoother:

1. Disable animation and visual effects

MIUI She's known for her beautiful but resource-intensive animations, to speed up the interface:

1. Go to Settings. → The phone.
2. Press. 5-7 once under the heading “Version” MIUI", The message is, “You’ve become a developer!"
3. Return to the main settings menu and open More →
4. Find the items: Window animation scale → Turn off animation scale transition → Turn off animation duration of animation → Turn off

These changes will make the transitions between applications instantaneous, but the interface will become less smooth. If you don't like this option, set a value. 0.5x shutdown.

2. Limitation of background processes

By default. MIUI It allows applications to run in the background, which eats up RAM quickly, to fix it:

• Go to Settings → Applications → Application Management
• Select AutoRun and disable it for all apps except instant messengers and those that really need to work in the background.
• In the same menu, select Battery and Performance. → Battery management and set the "Limited" mode for most applications".

3. Set-up of performance mode

At Redmi. 9A There is a hidden mode that can be enabled through the engineering menu:

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In the menu that opens, select Battery Information and set Performance mode. This will slightly increase the workload on the processor, but make the system more responsive. Note that this mode may warm the phone a little more.

Another important thing is to clean the cache. Do it regularly (once in a day). 1-2 weekdays):

1. Go to Settings → Storage
2. Choose Clear the cache
3. Confirm the action.

This will free up several gigabytes of space and eliminate possible lags.

💡

If the phone is slowing down, try restarting it in safe mode (press the power button). → long tap on "Switch off" → "Safe Mode. This will disable all third-party applications and help identify the culprit.

Display setting: brightness, color temperature and always on screen

Redmi screen 9A — It's one of the weakest parts of the model. IPS LCD permittingly 720×1600 (HD+) pixel density 269 However, even such a display can be adjusted for comfortable operation.

1. Automatic brightness

By default, this function is enabled, but it doesn't work perfectly.

• Go to Settings → Display
• Turn off automatic brightness
• Set the brightness level 40-50% for premises and 70-80% street-side

This will save battery power, as the light sensor often overstates the brightness.

2. Color temperature

To reduce the pressure on the eyes in the evening:

• Enable Reading Mode in Settings → Display.
• Set a schedule from 20:00 to 8:00
• Select the temperature "Warm" or manually adjust to the level 3500-4000K

3. Always on screen (Always on Display)

On the Redmi. 9A This feature is not by default, but it can be emulated using third-party applications, such as Always On. AMOLED. However, please note that LCD-It's going to be a big battery drop on the screen, and you're going to use the watch widget on the home screen.

4. Font size and scale

For people with vision problems:

• Go to Settings. → Display. → Size of text
• Increase the font to a comfortable size (we recommend no more than 120%, otherwise the interface elements will begin to crop)
• In the same menu you can include Fat font for better readability.

⚠️ Warning: Do not set maximum brightness on a permanent basis. This not only drains the battery quickly, but also accelerates the degradation of the backlight. 1.5-2 year.

To calibrate the colors of the screen, you can use a hidden menu:

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Here you'll find broken pixel tests, color reproduction checks, and fine-tuning white balance, but without special knowledge, it's better not to change the parameters in this menu, you can make things worse.

Sound tuning: volume, quality and hidden functions

Despite the budget price, Redmi 9A It has a pretty good sound system with a separate 3.5 mm audio jack, but by default, the sound is not optimally tuned:

1. Volume up.

Maximum volume is software-limited to remove the limit:

• Enable Developer Mode (as described earlier)
• Go to For Developers → Turn off absolute volume.
• Now in the sound settings will appear a separate slider for media

This will make the sound of 20-30% Louder, but be careful – at maximum volume, the speaker may wheez.

2. Equalizer adjustment

Built-in equalizer in MIUI It is often ignored, but it can improve the sound:

• Open the Music app
• During playback, click on three dots in the upper right corner.
• Select the Equator and experiment with presets
• For bass, choose Preset Bass or manually lift sliders 60-150 Hz

3.Mono sound for headphones

If you have trouble hearing in one ear, turn on the mono sound:

• Go to Settings. → Special facilities → Rumor
• Play Monoaudio.
• Choose Stereo in Mono for the best quality

4. Shutting down system sounds

Many system sounds (lock, unlock, photos) can be turned off:

• Go to Settings → Sound and vibration
• Turn it off: 🔔 The sound of lockdown 🔔 Camera sound 🔔 Pressing sound 🔔 Press vibration

⚠️ Warning: If after increasing the volume through the developer settings, the speaker starts wheezing even at mid-levels, return the settings back.This may indicate a hardware problem with the speaker that will worsen with increased load.

To test the sound quality, you can use a hidden menu:

##36446337## → Audio → Speaker Test

Here you can check both speakers (conversational and multimedia) for distortions.

Network and Internet settings: mobile, Wi-Fi and GPS

Network problems are one of the most common complaints of Redmi owners 9A. Let’s figure out how to set everything right.

1. Optimization of the mobile Internet

If the speed 4G leaves much to be desired:

• Go to Settings. → SIM-maps and mobile networks
• Choose yours. SIM-map → Type of network
• Just install. LTE (If your operator has a good coverage 4G)
• Enable Improved VoLTE Connection for Clearer Communication

2. Wi-Fi acceleration

For a stable Wi-Fi connection:

• Go to Settings. → Wi-Fi
• Click on your network. → Additionally.
• Install: 📶 Wi-Fi range → 5 GHz (if your router supports) 🔄 Autoconnection → Turn on 📊 Speed up. → Insert (for monitoring)

3. Accurate setup GPS

By default. GPS It's not working accurately, to improve location:

• Go to Settings. → Location
• Select Mode. → High precision
• Enable Device Search (helps with losing your phone)
• B Settings → Annexes → Permits → Location Disable Access for Unnecessary Applications

4. Savings in mobile traffic

To avoid unexpected expenses:

• Go to Settings. → SIM-maps and mobile networks → Transfer of data
• Turn on Traffic Savings
• Set a traffic limit (e.g., 3GB out of your 5GB tariff)
• B Settings → Apps disable background data transfer for unnecessary programs

To diagnose network problems, you can use the engineering menu:

#4636## → Phone information

So here you'll see the current network type, signal strength, and other connection parameters, and if you say "Not in Service" or "Only Emergency Calls" in the "Office" section, that indicates a problem with the network. SIM-card-carrier.

💡

Always use the internet for maximum speed. 4G (LTE) instead 3G. Even if the cover 4G weak, the speed is usually higher than on the network 3G.

Security setting: fingerprint, face unlock and encryption

Security is one of the most important aspects when setting up a smartphone. even the budget Redmi 9A Offering several levels of protection.

1. Fingerprint setting

If your model supports scanner (in some versions of Redmi) 9A He's gone):

• Go to Settings. → Screen lock and password → Fingerprint.
• Add a print by following the instructions on the screen
• Add the same finger. 2-3 at different angles for reliability
• Enable Unlocking applications for important programs (banks, instant messengers)

2. Face unlocking

This feature works even without an infrared camera:

• Go to Settings. → Screen lock and password → Face unlocking
• Follow the instructions while keeping your phone at eye level
• Note that this feature is less reliable than a print or PIN code.
• Enable PIN Requirements when restarting for additional security

3. Encryption of the telephone

If important data is stored on the phone:

• Go to Settings. → Screen lock and password → Encryption of the telephone
• Set a strong PIN or password
• Start the encryption process (it will take you) 30-60 The phone should be charged for a minute. 80%+)

Once encrypted, all the data on the phone will be protected, and remember that when you reset to factory settings, you can't decrypt the data without a password.

4.Protection against theft

Enable these features for safety:

• Go to Settings. → Google → Security and enable Device Search
• B Settings → Mi Account → Find the device to enable this function
• Install Google Find My Device for Remote Management

⚠️ Warning: If you sell or transfer a phone to another person, be sure to turn off Device Search in the Mi Account and Google settings. Otherwise, the new owner will not be able to use the phone - it will be blocked by your account.

To check the level of security of the phone, you can use the built-in diagnostics:

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Here you will see the data protection status, encryption and other security options.

Additional settings and hidden functions MIUI

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

One-handed mode

Reduces the size of the interface for easy control of the large hand:

• Go to Settings → Additional → Mode for one hand
• Select Reduce the screen and set sensitivity
• Now swipe your finger on the bottom of the screen to the left or right to activate the mode.

2. Double tap to wake up

Quickly unlock the phone with a double tap on the screen:

• Go to Settings. → Screen lock and password → Double touch to wake up
• Turn on the function.

3. Navigation gestures

Replace the standard buttons with gestures:

• Go to Settings. → Display. → Full screen mode
• Choose Gesture Navigation and Sign Type MIUI or full-screen

4. Second space

Create a separate profile with other apps and settings:

• Go to Settings → Special Opportunities → Second Space
• Follow the instructions for creating a second desktop
• Switch between spaces can be swiped with two fingers on the lock screen

5. Regime for children

Limit access to certain functions:

• Go to Settings. → Special facilities → Regime for children
• Set a PIN code to exit the mode
• Select the permitted applications

6 Hidden codes for diagnosis

A few useful USSD-codes 9A:

• #4636## - information about the battery and network