You just bought a new Xiaomi 9 and want to get the first switch on right? This procedure seems simple, but the stability of the device depends on the correctness of its execution. Unlike the newer Mi or Redmi series models, the Xiaomi 9 (codenamed cepheus) has its own features when first set up, related to the version. MIUI and hardware characteristics of 2019.
In this article, we will discuss not only the basic steps of inclusion, but also hidden settings that will help optimize the operation of the device from the first day. You will learn how to avoid typical activation errors (such as Mi Account issues), which settings are best set up right away, and how to check the health of all smartphone modules. 9 — double-frequency screen refresh (60/90 Hz, which many users miss when setting up their initial setup.
1.Preparation for the first turn on: what to do before pressing the power button
Before you turn on the Xiaomi 9, follow a few important steps that will save time and prevent possible problems.
First, check the package. The box should have:
- 📱 Smartphone Xiaomi 9 (model) M1902F1G global version)
- 🔌 Cable USB Type-C (Fast Charge 4)+)
- ⚡ Power charger 27W (original)
- 📄 Documentation (guarantee card, instruction)
- 🔑 Paperclip for the tray SIM-map
Second, prepare. SIM-Map: Xiaomi 9 supports:
- 📱 Nano-SIM (Major Slot) + Nano-SIM or microSD (hybrid slot)
- 🌍 Bi-band 4G LTE (Band 1/3/5/7/8/20/28/38/40)
- ⚠️ Note: When using two SIM-Cards are disabled support for microSD!
💡
If you are planning to use two SIM-cards, make sure both support VoLTE, otherwise the calls will switch to 3G, which increases battery consumption.
Third, charge your smartphone before you turn on, even though there's a charger in the box. 27W, first 10-15 It is better to use a standard charger for a few minutes. 10W (This is due to the Qualcomm Snapdragon power controller. 855, which calibrates the battery when first switched on.
Check the equipment for all elements.|
Install Nano-SIM in the main slot (slot 1)|
Connect the charger to the 10-15 minutes before switching on|
Prepare the data for the Mi Account (if any)|
Check for stable Wi-Fi connection (2.4 GHz or 5 GHz)-->
2.Inclusion process: from the power button to the choice of language
Now, let's move on to the on-line. Follow the instructions carefully, as at this stage many users make mistakes that lead to a logo hanging. MI.
Step. 1: Press the power button (located on the right side) on 3-5 The system performs fastboot testing of hardware components at this stage.
Step 2: Wait for the "Hello" screen to appear, and if the screen doesn't respond to touch for 30 seconds, it may indicate:
- 🔋 Battery discharge (even if the indicator showed charge)
- 🤖 Damaged firmware (if the device has been updated before switching on)
- 👆 Faulty touch screen (check the response to touch in different areas)
Step 3: Select the interface language. 60 is available for Xiaomi 9+ languages, including:
- 🇷🇺 Russian (full localization) MIUI)
- 🇺🇦 Ukrainian (partial localization)
- 🇰🇿 Kazakh (system inscriptions only)
- 🇬🇧 English (recommended for technical support)
Step 4: Connect to Wi-Fi. There’s an important caveat: Xiaomi 9 supports Wi-Fi 5 (802.11ac), But some routers with Wi-Fi 6 can cause connectivity problems:
- 🔄 Reboot the router
- 📶 Try connecting to a 2.4 GHz network instead of 5 GHz
- 🔑 Make sure that the network name does not contain Cyrillic symbols.
Setting up a Mi Account: Why it’s important and how to avoid being blocked
One of the most critical steps is to link a Mi Account, and many users miss this step, but it's important for:
- 🔧 Receipt of updates MIUI airborne (OTA)
How to create/link an account:
- Use a valid email (not temporary!) to create an account, Xiaomi can block the account if the email is invalid.
What happens if you don’t have a Mi Account?
Common mistakes and their solutions:
| Problem. | Reason. | Decision |
|---|---|---|
| No SMS with a confirmation code | Blocking by the operator or problems on the side of Xiaomi | Use an alternative confirmation method (call or email) |
| Account is blocked after creation | Suspicion of fraud (IP elsewhere) | Contact Xiaomi with a photo of the box and check |
| Cannot log into an existing account | Xiaomi servers are temporarily unavailable | Check your internet connection or try again later |
| Requires an old password after resetting | The account was linked to another device. | Restore your password through the official account.xiaomi.com website |
💡
Mi Account binding is a must for Xiaomi 9 to be fully used, and without it, you will lose access to key features and updates.
4. Basic setting MIUI: What can be changed immediately
Once you've linked your account, it'll suggest you do the basic setup, and many users rush in and miss important settings.
1. Screen refresh rate
Xiaomi 9 supports 90Hz, but by default it can stand at 60Hz for battery savings.
- Go to Settings. → Display. → Screen refresh rate
- Choose 90Hz for smooth scrolling
- Activate the Auto Switch option to balance performance and time
2. Optimization of productivity
By default. MIUI restricts the background activity of applications:
- 🚀 Go to Settings. → Special facilities → Optimization MIUI
- 🔧 Disable "Restriction of background processes"
- 📱 Enable "Show all user processes" (for developers)
3. Customization of gestures
Xiaomi 9 supports full-screen gestures (like on iPhone), but they are disabled by default.
- Go to Settings. → Display. → Full screen mode
- Select "Gest buttons" or "Full screen gestures"
- Adjust the sensitivity of the screen edges (Average recommended)
💡
If you have chosen full-screen gestures, remember the return combination: swipe from the left or right edge of the screen to the center.
5. Check the operability of all modules
Before starting active use, it is recommended to check all hardware components of Xiaomi 9. This will help to identify possible defects and use the warranty if necessary.
1.Camera test
Xiaomi 9 is equipped with a triple camera:
- 📷 Core module: 48 MP (Sony) IMX586) aperture f/1.75
- 🔍 Telephoto: 12 MP s 2x zoom
- 🌄 Wide-angle: 16 MP with a viewing angle of 117°
To verify:
- Open the Camera app
- Take photos in Photo, Portrait, Night and Video modes 4K
- Check Autofocus and Stabilization
Verification of sensors
Use the engineering menu to test:
- Please enter the phone application ##4636##
- Select "Equipment Testing"
- Check the operation of the accelerometer, gyroscope, compass and proximity sensor
3. Test of speakers and microphones
Xiaomi 9 has stereo speakers and three microphones.
- 🔊 Turn on the music and check the sound at maximum volume (there should be a balance between the top and bottom speakers)
- 🎤 Record a voice message to WhatsApp or Recorder and check the quality of the recording
- 📞 Call another phone and check how you can be heard.
How to check the touch screen for "dead zones"?
6. Battery Optimization: How to Prolong Your Lifetime
Xiaomi 9 is equipped with a battery capacity of 3300 mAh, which by modern standards is not much, but the right settings will help to extend the running time:
1. Customization of battery mode
- 🔋 Go to Settings. → Battery and productivity
- 📊 Select Balanced (recommended) or Energy Saving (if maximum operating time is required)
- ⚡ Turn off Charging Optimization if you use the original charger 27W
2. Background process management
- 🚫 Limit background activity for social media: Settings → Annexes → Permits → Auto-start
- 🔄 Turn off automatic sync for unnecessary accounts (Google, Mi Account)
- 📵 Enable “Adaptive Battery” in Android Settings
3. Screen optimization
- 🌓 Set adaptive brightness to the level 70-80%
- 🕒 Set up automatic screen shutdown through 15-30 momentary
- 🎨 Use dark themes of design (AMOLED-The screen consumes less energy when displaying black)
💡
Turning off unnecessary background processes and optimizing screen brightness can increase Xiaomi’s running time 9 on 20-30%.
7. firmware update: why you need to do it right away
Even if your Xiaomi 9 is new, it may have an outdated version. MIUI. Updating the firmware solves several tasks:
- 🛡️ Removes security vulnerabilities
- 🚀 Optimizes productivity
- 📱 Adds new features (e.g. improved Dark Theme mode")
- 🔧 Corrects camera and sensor errors
How to update firmware:
- Connect to Wi-Fi (update "over the air" can weigh) 1.5-2.5 GB)
- Go to Settings → About the phone → System update
- Click "Check Updates"
- If an update is available, click Download and wait until it is completed.
- After downloading, select "Install Now" or "Install at night"
What to do if the update is not installed:
- 🔄 Restart the device and try again.
- 🗃️ Release me. 2-3 GB of memory (update requires free space)
- 🔌 Connect the charger (installation will not start at a charge level below 20%)
- 🌐 Try using it. VPN, If the update is blocked in your area
How to install firmware manually?
8 Additional settings for experienced users
If you’re not a beginner and want to unleash the full potential of Xiaomi 9, pay attention to these settings:
1. Unlocking the bootloader (bootloader)
This will allow you to install custom firmware (for example, LineageOS or Pixel Experience).
- Link the device to your Mi Account (required!)
- Connect your smartphone to your PC and launch the Mi Unlock Tool
- Follow the instructions of the program (the process will take place) 72-168 The timeframe due to Xiaomi restrictions)
2. Activation of the Developer Mode
To access hidden settings:
- Go to Settings. → The phone.
- Press 7 times on the item "Version" MIUI"
- Return to Settings – a new section for developers will appear
It is recommended that this section include:
- 🔧 "Debugging by USB" (connect ADB)
- 📱 "Do not turn off the screen while charging" (useful for testing)
- 🚀 "Acceleration GPU" (Improves performance in games)
3. Optimization for gaming
Xiaomi 9 based on Snapdragon 855 is great for gaming. To improve performance:
- 🎮 Enable "Game Mode" in the battery settings
- 🔥 Set “Performance” in the graphics settings for games
- 🖥️ Turn off Optimization. MIUI for games" (sometimes restricting it) FPS)
💡
For maximum performance in games, set a limit FPS 60 fps will reduce heating and extend battery life.