Budget smartphone owners often face difficulties in trying to run demanding games, and Xiaomi Redmi 9A is no exception. This device is equipped with a MediaTek Helio G25 processor and only 2 or 3 gigabytes of RAM, which is at the lower end of the system requirements of the popular RPG Genshin Impact. However, the desire to immerse yourself in the world of Teivat is so great that users are willing to go to various tricks to run the game even on the least powerful hardware.
The main problem is not only performance, but also how MIUI manages resources and free space. Standard downloading through Google Play may not work or give a compatibility error, as the device may not officially be on the supported list, which is why it is important to understand the technical nuances of the process to avoid wasting time and nerves.
In this guide, we will take a look at all possible installation options, from official to alternative, and focus on system optimization: how to properly prepare your file system, what graphics settings to set for a stable FPS, and how to avoid critical errors when updating your game resources. Follow the instructions carefully and the adventure begins.
Verification of system requirements and compatibility
Before starting any action, you need to soberly assess the capabilities of your Redmi 9A. The Helio G25 processor is built on a 12-nm process technology and has 8 Cortex-A53 cores, which are more office-class than gaming. RAM type LPDDR4X in a 2 GB configuration is the bottleneck, since modern games consume much more resources for caching textures.
The official minimum requirements state that Android requires a Snapdragon 660 or similar processor in performance, as well as a minimum of 3 GB of RAM. Your smartphone does not formally pass both parameters, but this does not mean a complete ban on launch. The mobile version of the game has different builds, and sometimes less demanding configurations allow you to start the project with significant compromises.
⚠️ Warning: Attempting to install on a device that does not meet the minimum requirements can lead to strong heating of the housing, rapid battery discharge and unstable operation of the system as a whole.
The operating system version is also worth considering. The Genshin Impact requires Android 7.0 or higher to work properly, which is the default for the Redmi 9A, as the device came with a more recent version. However, the lack of security updates and driver optimizations for the PowerVR GE8320 GPU can cause graphic artifacts.
Preparation of the storage and cleaning of the system
The most common reason for failure to install or fly out is a banal lack of free space: the game weighs more than 20 GB after unpacking all resources, and public employees with 32 GB of internal memory may not physically have as much free space after accounting for system files.
Start by clearing the app cache and removing unnecessary files. Go to the storage settings and analyze what takes up the most space. Often it's video from messengers, old downloads or unused applications. MIUI has a built-in cleaning tool, but for deep cleaning, you better use a file manager.
☑️ Preparation of smartphone memory
If internal memory is critically scarce, consider using a MicroSD card. Although you can’t install the game on the map (Android forbids this for heavy applications), you can transfer media files to it, freeing up internal space. Go to Settings → Storage and change the default save path for the camera and downloads.
| Type of data | Average volume (GB) | Recommendation |
|---|---|---|
| Cash messengers | 2 - 5 GB | Clean in the application settings |
| Photos and videos | 5 - 15 GB | Move to PC or cloud |
| Established games | 1 - 10 GB | Remove heavy projects |
| System files | 10 - 12 GB | Don't touch it. |
After cleaning, be sure to restart the device, which will allow the system to redistribute file tables and release fragmented memory blocks, which will positively affect the speed of writing new data during the installation of the game.
Methods of downloading the installation file
Since the official Google Play store may have a model restriction, the most reliable way is to download the installer directly from the official developer’s website, ensuring that you get the latest version without viruses and modifications.
Open your browser (Chrome or built-in Mi Browser) and go to genshin.hoyoverse.com. At the bottom of the homepage, find the Android button. The system can automatically identify your device and suggest a file, or redirect to the Play Market. If you redirect to the store with the error "Device not supported", go back to the browser and click "Download APK" manually.
https://genshin.hoyoverse.com/ru/downloadAlternatively, using third-party but proven app stores like TapTap or APKPure are often less stringent compatibility filters and allow you to download a file even if your Redmi 9A is not formally fit.However, always check the digital signature of the file.
⚠️ Warning: Never download modified versions of the game (mods, hacks) from unknown sites, which will lead to instant blocking of the account by developers and the risk of infection of the smartphone with malware.
When downloading, make sure you have a stable Wi-Fi connection. The file weighs several gigabytes, and interrupting downloads over the mobile network can damage the archive. Once downloaded, the system can alert you to the dangers of installing from unknown sources — this is standard Android security procedure.
Why does the Play Market say "Unavailable"?
Installation process and initial setup
After loading APK-Click on the notification or find the file in the Download folder. The system will request permission to install from unknown sources. → Confidentiality → Special rights → Install unknown applications and allow this action for your browser or file manager.
Start the installer. It can take a while to unpack the data. Unlike regular applications, Genshin Impact will launch an additional launcher after the initial installation, which will start downloading the main game resources, and this is where the most free space is needed.
During resource downloads, the game may pause several times or issue memory warnings, at which point it is important not to delete the game, but to try to free up some more space or close the background processes. Press the "Menu" button (three strips or square) and select "Clean all" to close the unnecessary applications.
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If the installation is stuck at a certain percentage, do not rush to interrupt the process. On weak devices, writing large amounts of data to flash memory can take up to 10-15 minutes.
Once you have downloaded resources, you will have a sign-in screen, enter your HoYoverse, Google or Facebook account details, and if you are playing for the first time, you will have to go through a training phase, which is also a test of your Redmi 9A’s performance in real-world conditions.
Optimizing Graphics and Performance
The first run on Redmi 9A is a real stress test, so to be playable, you need to immediately reduce the load on the processor and graphics card. Go to the game settings menu (the gear icon) and select the Graphics tab.
Set the following parameters for maximum performance:
- 📉 Graphics: Low is critical for stability FPS.
- 📐 Rendering resolution: 0.6 or 0.8 – Decreasing resolution will greatly improve smoothness.
- 💨 Frequency of frames: 30 FPS — Don’t try to put 60, the device won’t pull.
- ☁️ Clouds: Turn off – they eat up a lot of resources GPU.
- 🌊 Reflections: Turn off.
Also, you should turn on Performance or Game Mode in your phone settings. MIUI There's a security app" → "Accelerate games. Add Genshin to it. That will turn off notifications and reserve the CPU for the game.
⚠️ Note: Do not install graphical mods or configuration files from the Internet that promise to "HD On the Redmi. 9A It'll cause a fall. FPS before 1-2 frames per second and overheating.
If the phone gets too hot during the game, remove the case. Thermal trottling (resetting frequencies due to heating) is the main enemy of budget processors. Cooling the case will help keep the frame rate stable longer.
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Decreasing the resolution of rendering gives a greater increase in FPS than reducing the quality of textures, as it reduces the number of pixels that the processor must process.
Solving common mistakes and problems
Even after installation is correct, users can encounter technical problems, such as "Resource Check" or endless downloading, often due to unstable Internet or ISP lockdowns, try switching from Wi-Fi to mobile Internet or using DNS with encryption.
Another problem is that you're going to crash at launch or at a certain point in the game, which is a sign of a lack of RAM. Before you start the game, always close all applications. In the developer settings (if enabled), you can try to limit background processes, but this can disrupt the messengers.
The “Not enough space” error is solved by cleaning the Android/data/com.miHoYo.GenshinImpact folder when updating. However, do this only if you are sure which files you are deleting, otherwise you will have to download resources again.
| Problem. | Probable cause | Decision |
|---|---|---|
| Black screen | Driver incompatibility | Update MIUI system |
| Departure to the desk | Lack of RAM | Close all background applications |
| Brakes in town | Weak processor. | Reduce the resolution of rendering |
| Mistake 31-43 | Network problems | Change the DNS or provider |
If nothing helps, maybe the particular version of the game is too heavy for the current firmware, in which case you should wait for the release of optimization from the developers or the Android system update for your device.