How to increase RAM on Xiaomi Redmi 9C: real methods and life hacks

Why is Redmi 9C “braking” and can it be fixed?

Owners of Xiaomi Redmi 9C often face the problem of a lack of RAM: applications fly out, the interface hangs, and multitasking turns into anguish. The reason is trivial — the smartphone is equipped with only 2-3 GB of RAM (depending on the modification), which by the standards of 2026 is critically small for comfortable work. But are there ways to increase RAM without buying a new phone?

Spoiler: You can't physically add RAM bars to the Redmi 9C -- memory is soldered on the motherboard -- but there are software and system tricks that can make efficient use of available resources and even trick the system into running faster. In this article, we'll look at all the working methods, from official MIUI functions to hidden settings for advanced users.

It's important to understand that no one way to turn your budget smartphone into a flagship, but the right optimization can give you a performance gain of 20-40%, which will already significantly improve the experience of use, starting with the simplest and gradually getting to "heavy artillery".

1. Virtual memory (RAM Expansion): the official way from Xiaomi

With MIUI 12.5 and later, Xiaomi has added RAM Expansion, which allows you to use part of the phone’s internal memory as an additional RAM. On the Redmi 9C, this option works, but with limitations.

How does it work? It extracts 1-3 GB from the built-in drive (depending on the available space) and emulates RAM. It's not actually real memory, it's cache, but for background processes and lightweight applications (messengers, social networks), there's almost no difference. The main drawback is that there's less available space for files.

• 🔧 How to Enable: Go to Settings → The phone. → Memory. → RAM Extension. Select volume (recommended 1 GB for the balance between speed and location).
• ⚡ 15-25% increase in multitasking, but don’t expect miracles in games.
• ⚠️ If free memory is less than 10 GB, the function may not work stable.

⚠️ Note: Virtual memory does not speed up the launch of heavy applications (such as Genshin Impact or Lightroom); it only helps to keep more background processes).

Should I turn on RAM Expansion? Yes, if you're actively using messengers and social networks. No, if you're prioritising games or photography. Also remember, once you activate the function, you can't roll back dedicated memory without resetting the settings.

System Optimization: How to “Free” Hidden Memory

Before you look for ways to increase RAM, you should free up the memory you already have. Redmi 9C has a lot of processes running in the background, wasting resources.

• 🧹 Turn off auto-start applications: Go to Settings → Annexes → Permits → Auto-run and disable it for all programs except system (calling, SMS).
• 🔄 Limit background activity: In the same app settings, find the Battery → Background restriction and turn on for all social networks and messengers.
• 🗑️ Clear the cache: In Settings → Memory. → Clean up, delete unnecessary files. Pay attention to the cache of Google Play Services, which can weigh several gigabytes!
• 🛑 Remove "junk" apps: MIUI Often installs pre-loaded programs (e.g. Mi Video, Mi Music) and can be deactivated via Settings. → Annexes → Delete (if there is no delete button, click "Disable»).

Another hidden memory eater is animations and visuals, and turning them off will give you the power to do so. +5-10% productivity:

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

⚠️ Warning: Disabling system applications (such as Mi Security) may disrupt security updates.

Disable autorun of unnecessary applications |Limit background activity of messengers |Clear cache in the "Memory" section |Remove or deactivate pre-installed programs Xiaomi|Disable animations in developer mode-->

3.Using microSD as an extra memory (and why it doesn't always work)

Many users think that a microSD card can replace RAM, and it's a myth that a flash drive is not used as RAM, but it can indirectly improve performance.

• 📱 Transfer of applications to SD: B Settings → Apps select the program and click Storage → Change. → Map. SD. This will free up internal memory, which will reduce the load on RAM.
• 🎮 Games on the map: Some games (for example, PUBG Mobile or Call of Duty allows you to save cache on the SD. This will reduce the use of RAM.
• ⚠️ But: Class cards UHS-I (Even the fastest ones, 10 to 20 times slower than internal memory. SD It might slow down the phone!

How to choose a map for Redmi 9C?

Important: Once you have installed the SD, format it as internal memory (in the storage settings) so that you can transfer applications there, but you can't retrieve the card without losing data!

4 Special applications to “increase” RAM: what works and what is cheating

There are hundreds of apps on Google Play that promise to “boost RAM 2 times” or “free up memory with one tap.” 90% of them are dummy ones that simply close the background processes (which can be done manually).

• 🛠️ Developer Options: You can manually restrict processes. Enable Do Not Save Actions and set Process Limit to Maximum 2 of the process in the background.
• 📊 Greenify: The app freezes unnecessary processes by preventing them from loading RAM. It only works with root rights or through the use of the app ADB.
• 🚀 RAM Booster (from Xiaomi): Built-in MIUI security → Optimization does clear memory, but does not increase it.

What not to do:

• ❌ Install “optimizers” like Clean Master or DU Speed Booster – They consume RAM themselves and show false notifications.
• ❌ Pay for «PRO-The version of apps that promise to overclock the phone is a scam.
• ❌ Use programs to “overclock” the processor – on Redmi 9C This will lead to overheating and rapid wear of the battery.

⚠️ Note: Apps like Game Booster or RAM Expander can show "increased RAM" in numbers, but they're actually just compressing data in memory, and it doesn't really add performance, and sometimes it even makes stability worse.

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Before installing any optimizer, check its rating and reviews. If the app has less than 4 stars or the last update was a year ago, this is a reason to be wary.

5. Root rights and custom firmware: radical methods

If you're willing to take risks, unlocking the bootloader and installing custom firmware (like LineageOS or Pixel Experience) can give you a big boost in performance.

• 🔓 System garbage removal: Castom firmware does not contain pre-installed Xiaomi apps that eat RAM.
• ⚡ Optimizations: Some firmware (like Havoc-OS) have patches for better memory management.
• 🛠️ Manual swap configuration: You can create a swap file on a memory card (but it’s risky – see below).

How do you do that?

1. Unblock the bootloader through the official Xiaomi website (you need a Mi Account and wait 7-15 days).
2. Install TWRP Recovery for Redmi 9C (model angelica or angelican, check in Settings → About phone → Model).
3. Sweep through custom firmware and GApps (Google services).

Risks:

• ⚠️ Loss of warranty (if the phone is under warranty).
• ⚠️ Possibility of “bricking” (turning into a “brick”) when firmware error.
• ⚠️ Some functions (such as Widevine) L1 for Netflix HD) They may stop working.

⚠️ Attention: On Redmi 9C helio-processor G35 Some custom firmware is unstable due to poor kernel support. Check forum reviews before installing 4PDA or XDA-Developers.

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Castom firmware does not increase performance by increasing RAM, but by removing debris and optimizing the core — +30-50% speed, but the cost of error is high.

6. Alternative solutions: when nothing helps

If all methods have been tried, and the phone still “brakes”, consider the following options:

• 🔄 Reset to factory settings: Sometimes the system clogs so much that a clean installation MIUI So, don't forget to back up! Path: Settings. → The phone. → Resetting settings.
• 📱 Firmware Update: Check Relevance MIUI In Settings → System updates: New versions often optimize memory management.
• 💰 Buying a phone with more RAM: If budget allows, consider models with 4-6GB of RAM (like the Redmi Note 12 or the Redmi Note). POCO X5). The difference in productivity is enormous.

If you’ve decided to stay on Redmi 9C, here are a few more life hacks:

• Use the lightweight versions of the applications: Facebook Lite, Messenger Lite, Twitter Lite.
• Turn off wallpaper animation in the screen settings – this eats up to 200-300 MB of RAM.
• In games, reduce the graphics to Low or Medium settings – this will reduce the memory load.

FAQ: Frequent questions about increasing RAM on Redmi 9C