How to set up a smartphone Xiaomi Redmi 9T: Complete guide from first inclusion to fine optimization

Introduction: Why the Redmi Setup Is Right 9T important

Xiaomi Redmi Smartphone 9T — It's one of the most popular budget devices with a balance of performance and price, but even with optimized firmware. MIUI, "Out of the box, the device is not running at full capacity. Without the right initial setup, you risk running into fast battery drain, lags in games, or unnecessary mobile traffic consumption.

This article is not about basic "enable and use", but about deep customization to your needs. We will analyze not only the standard steps like linking a Xiaomi account, but also hidden functions. MIUI 14 that the manufacturer does not advertise, such as how to turn off background processes that eat up to 15% of the charge per night, or how to set up Game Turbo for smooth gameplay in the game. PUBG Mobile.

We will focus on the unique problem of Redmi. 9T It's a hardware feature of the model that you can make up for with software. If you bought a used phone, at the end of the article, there's a separate section on resetting to factory settings without losing data.

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

Before you press the power button, prepare yourself. This will save time and avoid the typical errors. First, check the package: there must be a cable in the box. USB Type-C, power supply on 22.5W (If you bought a new model and a paper clip for the tray SIM-The absence of at least one element is an excuse to verify the authenticity of the device.

Secondly, prepare:

• 📱 SIM-Nano-SIM card (or two if you plan to use dual) SIM). Redmi 9T supportive 4G+ Both cards, but one of them will work in the mode. 3G ring-call.
• 🔌 Quick Charge 3.0 Charger (if the original unit is lost) Charges can cause the battery to overheat above 45°C.
• 📡 Access to 2.4GHz or 5GHz Wi-Fi.Redmi 9T It does not support Wi-Fi 6, but it is more stable at 5 GHz in apartment buildings.
• 🔐 Backup of contacts and photos from previous phone (via Google Account or Mi Cloud).

If you bought a used phone, be sure to check the status of the battery.

1. Turn on the phone by clamping the power. + Loudness up.
2. From the Recovery menu, select Battery Info.
3. Look at Battery Health, below 80 percent, it's very wear-and-wear.

⚠️ Note: If the phone was purchased on AliExpress or Avito for a price below 10 000 ₽, There's a high risk of getting caught in a fake. IMEI *#06# - it must match the sticker under the battery and box.

First Enablement and Basic Configuration of MIUI

After pressing the power button, you have to go through the initial setup wizard, and it is important to take your time and choose the right parameters:

1. Language choice: Install Russian (Russia). If this option is not available, your device is stitched under another region (possibly Global). ROM replaced by China ROM).
2. Network Connection: Select your Wi-Fi network. If the router supports WPA3, It's better to use it - Redmi 9T compatible with this protocol.
3. Account login: 🔑 If you already have a Mi Account, sign in.This will give you access to Mi Cloud (15 GB free) and Find Device features. 🚫 If you don’t have an account, don’t create it through the Settings wizard – it’s best to do it later in the Settings menu. → Accounts to avoid being tied to the region.

Set-up of the lock screen:

pattern lock

Password.

At the “Personalization” stage" MIUI insert:

• 📊 Collect usage statistics – disable so as not to send data to Xiaomi.
• 🔄 Auto-Update – it is better to disable and update manually (explain why next).
• 📱 App recommendations – turn off otherwise MIUI It will be an advertisement on the menu.

After completing the settings wizard, go to Settings → About the phone and check:

• Version MIUI (must be at least 14.0.5 for stable operation).
• Model of the device (should be) M2010J19SG global version).

💡

If the screen flickers or the backlight is too bright after setting up, go to Settings → Display. → Color mode and select Standard over Saturated, which saves up to 7% of battery life.

Optimizing performance and battery

Redmi 9T It is equipped with a Snapdragon 662 processor and a 6,000mAh battery, but out of the box" MIUI It limits their potential:

1. Set-up of performance mode

Go to Settings. → Battery and performance → Performance mode and select:

• 🚀 Balance is the best option for most users.
• 🎮 High performance – only for gamers (reduces battery life by 20%).

2. Disconnect unnecessary background processes

MIUI aggressively holds apps in your memory, even if you're not using them, to fix it:

1. Open Settings → Applications → Application Management.
2. Select an app (such as Facebook or TikTok).
3. Press Background Limitation and select Strictly.
4. Turn off Auto Start and Show notifications.

For mass shutdown, use Settings → Battery and performance → Battery management and select Optimization for all applications except instant messengers.

Calibration of the battery

If the phone is quickly discharged or shows an incorrect percentage of charge, perform a calibration:

After calibration, check the battery status via ##4636## (Battery Information menu).

4.Setting up Game Turbo for Gamers

If you play Call of Duty Mobile, Genshin Impact or other heavy games:

1. Open Settings → Special features → Game Turbo
2. Enable Game Mode and add your games to the list.
3. Activate: 🎯 Do not disturb during the game 🔋 Optimizing the battery 📶 Network priority (if you play on mobile data)

⚠️ Warning: If the phone is hotter during the game 42°C (tested in Game Turbo) → Monitor, lower the graphics settings in the game. Overheating leads to irreversible wear and tear of the battery over the course of the game. 3-6 months.

Set up the network and the Internet for maximum speed

Redmi 9T Supports Dual 4G, But it's not optimal by default, and the following settings will help increase mobile Internet speed and Wi-Fi stability.

1. Optimization of the mobile network

Go to Settings. → SIM-maps and mobile networks:

• 📶 Network type: Select 4G (If your carrier has VoLTE, turn on this option, which improves the quality of calls.
• 🔄 Auto-Select Network: Disable and select the operator manually (e.g. MTS or Tele2.
• 📊 Access point (APN): Check the settings. APN For MTS, this is: Name: MTS APN: Internet.mts.ru Proxy: not installed Port: not installed Username: mts Password: mts

2. Wi-Fi acceleration

If Wi-Fi is slow, then:

1. Go to Settings. → Wi-Fi.
2. Click on your network and select Change the network.
3. Install: 🔒 Type of security: WPA2-PSK (if the router does not support WPA3). 📡 Range: 5 GHz (if the router is dual-band). 🔄 Proxy: No.

Power saving mode Wi-Fi

Additional settings

To check the speed, use Speedtest or enter in the browser fast.com. Normal values for Redmi 9T:

• 📥 Downloading on Wi-Fi: 150-300 Mbit/s (nah) 5 GHz).
• 📤 Impact on Wi-Fi: 50-100 Mbit/s.
• 📶 Mobile Internet (4G): 30-80 Mbit/s.

⚠️ Attention: If the mobile Internet speed is below 10 Mbps, check if the operator has activated the service "Economic Internet" or "Night unlimited" These options artificially limit the speed.

Security and privacy: how to protect data

MIUI It collects a lot of data by default. 9T vulnerable to attacks via Bluetooth and NFC (If they're on permanently, the next steps minimize the risks:

1.Surveillance shutdown MIUI

Go to Settings. → Confidentiality:

• 🚫 Turn off Personalized Recommendations (remove ads from menus).
• 📊 Disable the sending of usage data.
• 📍 Turn off Google Location Services if you are not using Google Maps.

2. Locking and biometrics setup

For maximum safety:

1. Set a password (at least 8 characters) in Settings → Screen locking.
2. Add a fingerprint: 👆 Go to Settings. → Passwords and security → Fingerprint. Register at least 2 fingers (for reliability). Enable Unlocking applications for banking programs.

Facial recognition

3. Protection against viruses and fraudsters

MIUI It has built-in Security (shield icon), but it's not enough:

• 🛡️ Malwarebytes – for scanning for spyware.
• 🔒 1.1.1.1 (from Cloudflare) - to block trackers.
• 📱 Bouncer – for temporary permissions to applications.

Turn off the installation of applications from unknown sources:

1. Go to Settings → Privacy → Special permissions.
2. Select Install Unknown Applications.
3. Turn off permission for Browser and Files.

💡

Never plug in Redmi. 9T To public charging (airports, cafes) and attackers can use them to install malware through the Internet. USB (Juice Jacking attack").

Additional features: what can Redmi 9T, But not everyone knows.

Redmi 9T It hides a few useful features that are not obvious at first sight:

Second Space Mode

This feature allows you to create a separate profile with other apps and settings, useful if you use a phone with multiple people or want to share work and personal data.

How to turn on:

1. Go to Settings → Special Opportunities → Second Space.
2. Click Create and follow the instructions.
3. Set a separate password for the second space.

2.Gesturals and fast commands

MIUI supports hidden gestures:

• 👆 Double-touch screen: Wakes up the phone (includes in Settings) → Display. → Awakening with a double touch).
• 🔄 Triple press of the power button: You can schedule a Google Assistant or Flashlight launch.
• 📱 Gesture down the lock screen: Quick access to the camera.

3. Hidden codes for diagnosis

These commands will help to check the iron of the phone:

• #4636## - information about battery, network and usage.
• ##6484## - Camera test (check all modules)
• #64663## - Sensor test (gyroscope, accelerometer)
• ##232338## — MAC-Wi-Fi address and Bluetooth.

4. Reading mode (Eye Comfort)

If you read a lot from the screen, turn on your vision protection:

1. Go to Settings → Display → Reading Mode.
2. Turn on the Planner (for example, 21:00 to 7:00).
3. Adjust the color temperature to Warm.

Reset to factory settings without data loss

If the phone is slowing down or you've bought it used to, factory resets can help, but you need to save the data before you do.

1. Backup

Use the built-in MIUI tools:

1. Go to Settings → About Phone → Backup and Reset.
2. Select Local Backup.
3. Check the boxes: 📱 System data (wi-fi settings, wallpaper). 📞 Contacts. 💬 Communications. 📷 Multimedia (photos and videos).

Create a backup copy

The backup file will be saved in the folder MIUI/backup/AllBackup. Copy it to a computer or cloud.

2. Resetting settings

There are two ways:

• 📱 Through the menu: Go to Settings → The phone. → Backup and reset. Select Settings Reset. Confirm action.

Through Recovery:

1. Turn off the phone.
2. Press the power + the volume up.
3. In the Recovery menu, select Wipe Data.
4. Confirm the reset.

⚠️ Warning: After reset, the phone may hang on the Redmi logo 5-10 It's normal if you hang out longer. 20 minutes, so the firmware is damaged, and you need to reflash the device through Fastboot.

3. Data recovery

After discharge:

1. Pass the Initial Setup Master.
2. Go to Settings → About Phone → Backup and Reset.
3. Select Restore from backup and specify the file.

If the backup is not restored, try:

• Copy the file into a folder MIUI/backup/AllBackup manually.
• Rename the file to backup_123456789 (where the numbers are the date of creation).

FAQ: Answers to Frequent Questions