How to Free RAM on Xiaomi Redmi 9T: The Complete Guide

With its 4-6GB of RAM, the Xiaomi Redmi 9T often faces slowdown problems due to overloaded RAM. Even with modest tasks - launching messengers, social networks or games - the system begins to "slow down", and applications spontaneously close. Not only the MIUI architecture, but also the features of Android 10/11 on the budget hardware with a Snapdragon 662 processor are to blame.

In this article, we will discuss the unique methods of freeing RAM for the Redmi 9T, including hidden MIUI settings that Xiaomi does not advertise. We will analyze both standard methods (clearing the cache, disabling autoload) and advanced ones (configuring Developer Options, limiting background processes). All instructions are tested on MIUI 12.5-14 firmware and do not require superuser rights.

Why is Redmi 9T “suffocating” from a lack of RAM?

The manufacturer claims that 4 GB of RAM is enough for everyday tasks, but in practice, users are faced with:

• 🔄 Frequent app reboots (e.g. YouTube or Telegram “fly out” when switching between them).
• ⏳ Hanging in multitasking – even with open 3-4 tabs in Chrome.
• 📉 Unintentionally closing games (PUBG Mobile, Genshin Impact, despite the high charge level.

The reason lies in three factors:

1. Aggressive MIUI optimization: The system kills background processes to free up memory, but often does so too soon.
2. Snapdragon 662 architecture: Budget chipset mismanages the allocation of RAM between cores.
3. Contaminated cache: Temporary application files take up to 1-1.5 GB of memory, which the system does not automatically release.

Method 1: Manual cleaning of RAM through the MIUI menu

The fastest method is to use the built-in Cleanup utility, which removes unnecessary processes and cache, but it is important to do it correctly so as not to harm:

1. Open Settings → Applications → Cleaning.
2. Click “Clean” in the section RAM.
3. In the list of applications, tick the ones that can be closed (exclude messengers and system services!).
4. Confirm the action with the button "Clear [X] MB".

⚠️ Warning: Don’t clean your memory too often (more than 3 times a day) This will cause apps to reboot each time you open it, which will increase battery consumption by 10-15 times%.

Games (PUBG, Free Fire)

Background players (Spotify, VK Music)

Unused Chrome tabs

Geolocation services (Yandex.Maps, Google Maps)-->

Method 2: Disabling Autoboot of Unnecessary Applications

Many programs (Facebook, AliExpress, TikTok) run automatically when you turn on your phone or connect to the Internet, which eats up to 500-800 MB of RAM in the background.

1. Go to Settings → Applications → Application Management.
2. Select an app (such as Facebook) → Autorun.
3. Turn off the Auto Start and Second Run sliders.

For mass shutdown, use the "lean" mode:

• 🔋 B Settings → Battery and productivity → Frugality.
• 📱 Activate the “Limit Background Activity” option for selected applications.

💡

After you turn off the autoboot, restart your phone, and this will apply the changes to the processes that are already running.

Method 3: Set up the developer mode to optimize RAM

The hidden options of Developer Options allow you to manually limit background processes and reduce memory load.

1. Go to Settings. → The phone.
2. Click on the MIUI version 7 times until the notification “You are a developer!” appears.
3. Back to Settings → Additionally. → For developers.

Now set up the key parameters:

• 🔧 Process Limitation: Set Max 3 of the process in the background (see Appendix section).
• 🖥️ Do not save actions: Activate the option Do not store actions (reduce RAM consumption by 20-30%).
• 🚫 Disable animation: Install window animation = Off and Animation of Transitions = Off (will speed up the interface).

⚠️ Attention: Limiting processes to 2–3 could cause WhatsApp or Viber to be slower to receive notifications.Optimum value for Redmi 9T — 4 process.

Method 4: Cleaning the cache of system applications

Google Play Services, MIUI System and other system components can take up to 1-1.5 GB of RAM, even if you don’t use them.

1. Go to Settings → Applications → Application Management.
2. Sort the list by cache size (click on the icon) ⚙️ → Sorting → Cache size).
3. Select an app (e.g. Google Play Services) → Storage → Clear cache.

⚠️ Warning: Do not clear the data (Clear Data) of system applications:

• 🔄 Resetting your Google Account settings.
• 📱 Loss of contact synchronization and calendar.
• 🚨 Mistakes in work MIUI Launcher.

Safe list for cleaning the cache:

Method 5: Use of third-party optimizers (with caution!)

Apps like CCleaner, DU Speed Booster or Greenify promise to free up RAM, but on Redmi 9T, they often do more harm than good.

• 🛑 Conflict with MIUI Optimizer: built-in Xiaomi utility can block third-party cleaners.
• 🔋 Increased battery consumption by 5-10% due to continuous scanning.
• 📱 Spontaneous application resets (for example, WhatsApp stops showing notifications).

If you still decide to use an optimizer, choose Greenify (only in the “Hibernate” mode without root rights) and follow the rules:

Do not add system applications (MIUI, Google Services) to the list.

Use only the "Hibernate" mode (no aggressive cleaning)

Turn off auto-cleaning on schedule

Do not clean the RAM more often than 1 time in 4 hours-->

⚠️ Warning: After installing Greenify, check the notifications in messengers. If they disappear, exclude the applications from the hibernation list.

Method 6: Update MIUI and system core

Xiaomi regularly releases patches to optimize memory management, for example, MIUI 13.0.4 for Redmi 9T was fixed:

• 🐌 Memory Leak in Google Play Services (saves up to 400MB of RAM).
• ⚡ Hanging in multitasking due to Snapdragon 662 conflict with Linux kernel 4.14.
• 🔄 Unintentional closing of games (especially in Call of Duty Mobile).

To update:

1. Go to Settings → About the phone → System update.
2. Click on "Check Updates."
3. If you have a new version, download it (preferably via Wi-Fi) and install it.

🔹 Important: Before the update:

• 🔋 The battery charge should be more than 50%.
• 📱 Free up 3-4 GB of internal memory (update weighs) ~1.5–2 GB).
• 🔒 Make a backup of the data through Settings → Additionally. → Backup.

💡

The MIUI update is the only way to fix hardware memory leaks associated with the Snapdragon 662 chipset.No cleaners will replace Xiaomi patches.

Method 7: Hardware reset (last chance)

If all methods failed, and there is less than 500 MB of free RAM left even after cleaning, reset to factory settings.

• 🗑️ Unnecessary system files accumulated after updates.
• 🧹 Residual data of remote applications.
• 🔧 Incorrect settings MIUI, memory-leaking.

Instructions:

1. Make a backup copy of important data (photos, contacts, messages).
2. Go to Settings → About the phone → Reset settings.
3. Select “Erase all data”.
4. Confirm the action by entering the password and wait for the reboot (it will take 5-10 minutes).

⚠️ Attention: After discharge:

• 🔐 Do not install more than 10 applications for the first 24 hours – let the system stabilize.
• 📱 Do not restore data from the backup immediately – first check the RAM in a “clean” state.

FAQ: Frequent questions about RAM release on Redmi 9T