How to Set Up Xiaomi Redmi 9A: A Complete Guide from First Included to Fine Optimization

Xiaomi Redmi 9A is one of the most popular budget smartphones that combines simplicity and functionality. However, even such an affordable device requires the right setup to unleash its potential. Many users face problems after purchase: slow operation, fast battery drain or an uncomfortable interface. In this article, we will discuss all the stages of configuration, from the first on to the hidden features of MIUI, which will make using the smartphone more comfortable.

It’s important to understand that Redmi 9A runs on a custom MIUI shell, which is significantly different from pure Android. There are some nuances here, such as duplicate applications from Xiaomi or aggressive battery optimization, which can interfere with the work of background processes. We will show how to turn off unnecessary services without harming the system, adjust gestures and even improve performance on weak hardware.

If you've just unpacked the box or want to reinstall the system from scratch, this is the guide for you, and for power users, we've prepared a section with hidden features that the official documentation doesn't mention.

First Installing and Basic Setup

When you first turn on the Redmi 9A, the system offers to go through the wizard of the initial setup, where it is important to take your time and carefully choose the options - they will affect the operation of the smartphone.

When choosing a language and region, look for regional settings, and if you choose a country other than Russia, some Xiaomi services (such as Mi Cloud or Mi Video) may not work properly.

• 🔄 Connect to Wi-Fi (be sure to do this right away to download updates)
• 📱 Sign in to your Xiaomi or Google account (you can skip it, but then there will be no data sync)
• 🔒 Set up the unlock (fingerprint on Redmi) 9A absent, only PIN/graphical)
• 📲 Transfer data from your old phone (works via cable) OTG or Wi-Fi Direct)

One of the key things is setting up Google services, where many users make the mistake of not syncing contacts, calendars and backups, without which, if you reset or break your phone, you lose all your data.

• 📇 Synchronize contacts (via Google Accounts) → Synchronization)
• ☁️ Backup in Google Drive (included in Settings) → Google → Backup)
• 📍 Geolocation (required for maps, weather, and some applications, but can be turned off later)

⚠️ Note: If you miss the step with setting up your Xiaomi account, later some features (like Find Device for phone search) will not be available. → Xiaomi account, but it will require additional confirmation.

Optimizing performance: how to speed up the Redmi 9A

The Redmi 9A comes with a modest MediaTek Helio G25 processor and 2 to 3 GB of RAM, which means that the smartphone can slow down when multitasking or working with heavy applications, but the right settings will help improve the situation.

The first thing you need to do is turn off the animations, and it'll make the system work faster visually.

1. Activate Developer Mode by tapping 7 times on the MIUI version in Settings → About Phone.
2. Back to Settings → Additionally. → For developers.
3. Find the items Animation Scale, Transition Animation and Animator Duration – set the value Off or 0.5x.

The second is to limit background activity. MIUI, by default, aggressively closes apps, but some of them (messengers, music players) have to work in the background.

1. Go to Settings → Applications → Application Management.
2. Select the desired application (for example, Telegram or VKontakte).
3. Press Permissions → Autostart and turn on the option.
4. In the same menu, find Battery Limitation and select No Limits.

You should also pay attention to cleaning the cache. Unlike factory resets, this procedure does not delete your data, but frees up space:

Settings → Memory → Clean the cache

⚠️ Warning: Do not use the Google Play accelerators and optimizers – they not only do not help, but may contain malicious code. MIUI It has its own optimization system (Security) → Optimization, which is sufficient.

Screen and gesture settings

Redmi screen 9A — it IPS-resolution-matrix 720×1600 (HD+). Despite its budget quality, it can be customized to be more comfortable to use. Let's start with the color temperature:

1. Go to Settings → Display → Color scheme.
2. Choose Warm (less blue light, eye-friendly in the evening) or Cold (brighter colors).
3. Activate Reading for black and white (good for battery savings).

One of the most useful features of MIUI is the navigation gestures, which allow you to abandon the classic buttons "Back", "Home" and "Recent":

1. Open Settings → Display → Full-screen mode.
2. Choose Gestures instead of Buttons.
3. Practice: 👆 Swipe up from the bottom edge – return to the main screen. 👈 Swipe from the edge of the screen to the right – go back. 👇 Hold your finger at the bottom – open recent apps.

Redmi 9A also has a hidden double tap to wake feature that allows you to turn on the screen by touching it twice.

Settings → Display → Double touch to wake up

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If your gestures are not working smoothly, try reducing sensitivity in Settings → Additional → Special Features → Touch sensitivity. This will help you avoid accidental positives.

Battery and charging: how to extend the working time

The Redmi 9A has a 5,000 mAh battery, but the weak processor and MIUI optimizations don’t always make it 100 percent possible to exploit that potential, with the main charge eaters being background processes, mobile internet and screen brightness.

The first thing to do is to set the battery mode:

1. Go to Settings → Battery and Performance → Battery Mode.
2. Choose Charge Saving for Maximum Autonomy or Balanced for a trade-off between performance and running time.
3. Activate Ultraeconomic Mode (disables background data and limits performance) at low charge.

The second is to optimize mobile Internet usage, and many apps (social networks, instant messengers) are constantly sharing data in the background, to limit this:

1. Open the Settings. → SIM-maps and mobile networks → Transfer of data.
2. Click on the pin pin pin next to yours. SIM-card.
3. Enable limit background data.

Also worth paying attention to the charger. Redmi 9A supports charging up to 10 watts, but the kit comes with a 5 watt adapter. If you want to speed up charging, you can use a power supply of 10-18 watts (for example, from the Redmi Note), but this will slightly reduce battery life.

⚠️ Warning: Do not use night chargers with trick charging (such as some power bank) and may produce unstable voltages that will cause the battery to bloat after 6-12 months.

Communication and Networks: Setup of Mobile Internet and Wi-Fi

Redmi 9A supportive 4G LTE, But for stable mobile Internet operation, the correct setting is required. APN. If, after insertion, SIM-The internet is not working, do the following:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. Click on the three dots in the top right corner and select Reset to default values.
3. If this doesn’t work, add APN manually (options can be found on your carrier’s website).

To improve communication quality in low signal areas, only turn on 4G mode (disables switching to 3G/2G, which sometimes helps):

→ SIM-maps and mobile networks → Preferred network type → 4G

If you frequently connect to public Wi-Fi (cafes, hotels), turn on protection against fake hotspots:

1. Open the Settings. → Wi-Fi.
2. Click on three points → Additional → Wi-Fi security.
3. Activate the Security Check option.

Security and confidentiality

MIUI collects more data than standard Android, but most tracking features can be turned off.

1. Go to Settings → Privacy → Application permissions.
2. View the list and disable unnecessary permissions (such as access to geolocation for games or flashlights).

Next, disable data collection Xiaomi:

1. Open Settings → About Phone → MIUI version (click 7 times to become a developer).
2. Back to Settings → Additionally. → For developers.
3. Find and disconnect: 📊 Sending error reports 📈 Collection of data on use 📍 Allow activity tracking

To protect against viruses and fraudulent sites, use a built-in security scanner:

Settings → Memory → Security Check

If you enter passwords frequently, enable autocomplete via Google:

1. Open Settings → Additional → Language and Enter → Autocomplete.
2. Choose Google or another password manager.

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Disabling Xiaomi’s data collection does not affect smartphone performance, but it can lead to less accurate recommendations in apps (e.g. Mi Video or Mi Browser).

Hidden MIUI features you didn’t know about

MIUI hides a lot of useful features that are not obvious at first glance.

1.Dual Apps – allows you to clone messengers (for example, have two WhatsApp accounts):

Settings → Annexes → Dual Apps

2.Children mode – restricts access to applications and sets a time limit:

Settings → Special Opportunities → Mode for Children

3. Fast commands – run functions through voice commands (works even on a locked screen):

Settings → Voices and input → Quick commands

4. Hidden camera settings — the simple interface of the Redmi 9A camera has a professional mode hidden to enable it:

1. Open the Camera app.
2. Swipe your finger up the screen (or tap the three lines in the upper right corner).
3. Choose Professional or Manual.

Instructions: XDA Developers.