How to set up Xiaomi Mi 4: a complete guide from the first on to fine-tuning

Xiaomi Mi 4 is the iconic 2014 smartphone that is still used by many users today for its reliability and custom firmware installation, but even 10 years after its release, its setup may raise questions: where to download the latest software, how to optimize the work on modern versions of Android, and what to do with outdated features?

This article will help you understand all the nuances, from basic customization after buying or resetting to advanced tricks to improve performance. We will look at the official and informal methods relevant to 2026, and also warn against the typical mistakes that can turn a smartphone into a “brick”. MIUI and alternative firmware such as LineageOS.

Preparation for first inclusion

Before you start setting up the Xiaomi Mi 4, make sure you have everything you need.This is often ignored, but it is critical to avoid problems in the future.

First, check the completeness: the box should have a smartphone, microUSB cable, power supply (if preserved) and documentation. If you buy a device from hand, ask the seller to demonstrate the performance of all the functions: sensor, cameras, speakers and buttons. Mi 4 is known for problems with the display plumes – they are worth checking especially carefully.

• 🔋 Charging: Use the original power supply or certified output analogue 5V/2A. Cheap charging can damage the battery.
• 📶 SIM-The Mi 4 supports microSIM (2FF). If you have a nanoSIM, use an adapter.
• 💾 Backup: If you are transferring data from an old phone, prepare the files in advance (contacts, photos, messages).
• 🌐 Internet: Connect to a stable Wi-Fi network – this will speed up the download of updates and applications.

⚠️ Note: If the smartphone was bought with hands and is already unlocked (installed custom recovery or firmware), do not update it through official Xiaomi channels - this can lead to locking the bootloader.

First Including and Choosing Language

When you first turn on the Xiaomi Mi 4, you will see the logo MI, Then the initial setup process begins, and it is important to choose the right language and region, as this will affect the available features (for example, the availability of Google Play).

If you don't have Russian on the list, don't panic: you can add it later through your settings. At this point, select English (United States) - this will make it easier to configure further. After you choose the language, the system will suggest connecting to a Wi-Fi network. Don't miss this step - without the Internet, you will not be able to download the necessary updates and applications.

• 🌍 Region: Select Russia or United States (depending on the services you need). Google Play is better to specify the United States.
• 🔑 Xiaomi account: if you don't have one, skip this step (you can create it later.
• 🔄 Update MIUI: If the system offers to update, refuse – first you need to check the current version of the firmware.

Once you've completed the initial setup, you'll be on the home screen, and you can now fine-tune it, and if the screen responds to latency touches, it could be due to outdated firmware or worn-out display plume, which we'll talk about in the optimization section.

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If the smartphone is already slowing down at the setup stage, try to turn off the animation in the developer settings. → About the phone and 7 times click on the version MIUI, Then go back to the extra. → For developers and install animation = 0.5x.

Updating the firmware: official and informal methods

Xiaomi Mi 4 officially supported MIUI 8 is based on Android 6.0 Marshmallow. However, today, the current firmware versions are only available in unofficial sources.

Official Update (if available)

If your smartphone hasn’t been updated yet, check the current version in Settings. → The phone. → Version. MIUI. The latest official firmware for the Mi 4 — MIUI 8.1.6.0 (Global Stable) can be updated via:

1. Update menu: Settings → The phone. → Updating the system.
2. Firmware file: download.zip from Xiaomi’s website and install via Updater (requires an unlocked bootloader).

Unofficial firmware (LineageOS, Pixel Experience)

For modern use, the Mi 4 It is better to install custom firmware based on Android 10/11. Popular options:

• 📱 LineageOS 18.1 (Android 11) – stable, but without Google Apps (you need to install separately).
• 🎨 Pixel Experience – imitates pure Android with features from Google Pixel.
• ⚡ Havoc-OS - customizable firmware with many settings.

To install custom firmware will require:

1. Unlock the bootloader via Mi Unlock Tool (requires a Xiaomi account tied to the device).
2. Install custom Recovery TWRP (version for Mi 4 - 3.6.2).
3. Make a backup of the current firmware through TWRP (kickback).
4. Switch.zip firmware and GApps files (if you need Google services).

⚠️ Warning: Installing unofficial firmware will void the warranty (if it is still valid) and may result in data loss.On Xiaomi Mi 4 with newer firmware than MIUI 8 Wi-Fi module often breaks - this is a hardware problem associated with chip wear!

Make a backup of data on the PC|Charge the phone to 80%|Download the firmware and TWRP cancro|Check the efficiency of Wi-Fi and Bluetooth|Disable antivirus on PC (can block fastboot)-->

Optimizing productivity

Xiaomi Mi 4 is equipped with a Qualcomm Snapdragon 801 processor and 3 GB of RAM, which by modern standards is not enough, but with the right settings it can be made suitable for basic tasks: instant messengers, calls, watching videos and even light games.

The first thing you need to do is turn off unnecessary background processes.

1. Go to Settings. → Annexes → Autorun and disable Autorun for all applications except instant messengers and system services.
2. B Settings → Battery. → Power mode select Saving charge.
3. Turn off animation: Settings → Additionally. → For developers → Animation. = Off.

If your smartphone is slowing down, try:

• 🗑️ Clear the cache: Settings → Memory. → Clear the cache.
• 🔄 Reset to factory: Settings → Additionally. → Reset (pre-do backup!).
• 🛠️ Install a light launcher: for example, Nova Launcher or Lawnchair.
• 🎮 For games: use Game Turbo (if available in firmware) or reduce screen resolution to 720p.

If you use custom firmware, check the kernel settings, for example, in LineageOS you can change the task scheduler to cfq or ondemand for better performance, through applications like Kernel Adiutor (root rights required).

Network and communication setting

One of the frequent problems of Xiaomi Mi 4 is the unstable operation of the mobile network and Wi-Fi, which is due to both outdated drivers and hardware wear and tear, let's figure out how to set up the connection correctly.

Mobile network (2G/3G/4G)

Mi 4 supportive 2G, 3G and 4G LTE (ranges B1/B3/B7). If the smartphone does not catch the network:

1. Check that SIM-The card is inserted into the first slot (the second slot may not support the card). 4G).
2. Update the settings APN: Settings → SIM-maps and mobile networks → Access points (APN). For most operators, automatic settings are suitable.
3. If the signal is weak, try manually selecting the network: → Mobile network → Choice of network → Manual scanning.

Wi-Fi and Bluetooth

Wi-Fi issues on Mi 4 often linked to Broadcom chip overheating BCM4339. If Wi-Fi is shut down or slows down:

• 📡 Switch to 2.4 GHz band (5 GHz may not work consistently).
• 🔥 Turn off Wi-Fi Direct and Wi-Fi Sharing in the settings.
• 🔄 Reboot the router and smartphone.
• 🛠️ If nothing helps, replace the heatpaste on a Wi-Fi chip (this is a hardware problem).

For Bluetooth, the following tips are relevant:

• 🎧 If the headphones are connected but the sound is interrupted, try turning off the headphones. A2DP developer-setting.
• 🔗 To connect to a car radio, you may need to reset your Bluetooth settings: Settings → Bluetooth → Three points. → Reset the settings.

⚠️ Note: If you have a customized ROM Wi-Fi or Bluetooth module stopped working, most likely the file was damaged NVRAM. It can be restored through SP Flash Tool, but it requires skills.

Camera and multimedia setup

Xiaomi Mi Camera 4 fitted 13-Sony megapixel sensor IMX214 light-powered f/1.8. It was a top camera for its time, but today it's limited, but with the right settings, you can get acceptable shots.

By default, the camera saves the photo in format JPEG permittingly 4128×3096. To improve quality:

1. Turn it on. HDR (in camera settings) – this will help when shooting against the light.
2. Turn off Face Improvement and Auto-Contrast – they spoil the naturalness of the shots.
3. Use Manual Mode (Pro Mode) to control ISO, white-balance.

For the video:

• 🎥 Maximum authorization — 1080p@30fps. It is better to shoot in the smoothness 720p@60fps.
• 🎤 The external microphone is not supported, so use a separate voice recorder for good sound.
• 📱 Use apps like Open Camera or Footage to stabilize.

If the camera produces a “failure to connect to the camera” error, it may be due to:

• Damaged plume (a common Mi 4 problem).
• Application conflict (try to clear the camera cache).
• Older drivers (will help flashing).

For listening to music and video, it is recommended:

• 🎧 Use headphones with impedance 16-32 ohms (built-in amplifier weak).
• 🔊 Enable Mi Sound Enhancer in the sound settings for the best bass.
• 📺 For the video in 4K Use third-party players like this VLC or MX Player (standard player does not pull high resolution).

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The Xiaomi Mi 4 still has the ability to take good pictures with sufficient light, but the key is not to use digital zoom and shoot in 4:3 (rather than 16:9) to use the entire sensor.

Security and unlocking of the loader

If you plan to install custom firmware or get root rights, the first thing to do is unlock the bootloader. On the Xiaomi Mi 4, this is done through the official Mi Unlock Tool, but there are nuances.

Step-by-step:

1. Link Xiaomi account to device: Settings → Xiaomi account → Add an account.
2. Turn it on. OEM Unlock and Debugging by USB developer-setting.
3. Download Mi Unlock Tool from Xiaomi (Windows version).
4. Launch the tool, log in to your account and connect your phone in fastboot mode (keep Volume down). + Power on-set).
5. Follow the instructions of the program. Unblocking will take up to 72 hours (Xiaomi checks the account).

After unlocking, you can install TWRP And custom firmware. But remember:

• 🔓 Unlocking will reset all data on the phone.
• 🛡️ Some banking applications (for example, Sberbank Online) may not work on custom firmware due to the lack of SafetyNet.
• 🔄 If something goes wrong, you can return the official firmware through the Mi Flash Tool (requires a Xiaomi account).

⚠️ Note: On some versions of the Mi 4 (Like Mi. 4 LTE-CT for China) unlocking the bootloader may result in loss IMEI. Preserve before the procedure IMEI using the adb shell su command -c 'cat /data/.cid.info'.

If you don't need custom firmware, but you want more control over the system, you can get root rights on the official firmware.

1. Install. TWRP (Without unlocking the bootloader, it is impossible).
2. Please. Magisk.zip river-driver.
3. Install Magisk Manager for rights management.

Root gives you access to:

• 📁 Full control of the file system.
• 🔧 Setup of the kernel and processor.
• 🚫 Blocking Advertising at System Level.

Repair and upgrade: what can be improved in Xiaomi Mi 4

10 years after the release of Xiaomi Mi 4 may require repair or upgrade.

Self-repair

If you are confident in your abilities, you can replace:

• 🔋 Battery: original capacity - 3080 mAh. Modern analogues (for example, from Baseus) offer 4000-4500 mAh, but they are thicker and may not fit into the case.
• 📱 Display: replacement of the plume and sensor will cost 1500-2500 ₽. Original parts are difficult to find, so often install analogues from Samsung or LG.
• 🔊 Speaker and microphone: a common problem is the quiet sound in the dynamics, because of the dust in the grid, cleaned with compressed air or replaced with a module.

upgrade

The Mi 4 can be improved in the following ways:

• 💾 Memory replacement: The phone supports microSD up to 128GB (format) FAT32). Adoptable Storage is better for apps (Android 6.0 is required).+).
• 🔄 Cooling: Installing a copper plate on a processor and memory chip will help reduce trottling (a drop in performance when heated).
• 📡 Wi-Fi antenna: If the signal is weak, you can replace the antenna module (cost is about 500 dollars). ₽).

Should you invest in an upgrade to the Mi 4 in 2026?

• 💰 You're not willing to spend $15,000.+ ₽ new-phone.
• 🛠️ You like to work with technology and experiment.
• 🎮 The phone is used for specific tasks (e.g. retro games via RetroArch).

⚠️ Warning: When replacing the battery, be careful with the plumes - they are fragile and easily break. If the phone does not turn on after replacing, check the connection of the power connector to the motherboard.

FAQ: Frequent questions about Xiaomi Mi 4