Xiaomi Redmi 7A with its modest 2GB of RAM often becomes a bottleneck for modern applications. Even after optimizing the system through Settings → Apps → Cleanup users face slowdowns when multitasking. But can you physically or programmatically expand RAM on this budget smartphone?
In this article, we'll look at all the available methods, from official MIUI functions to radical hardware interventions, and it's important to understand that not all methods are equally safe, and some can lead to a loss of warranty or device failure, and we'll be honest about the risks, limitations, and real effectiveness of each approach.
1. Virtual memory (RAM Expansion): the official way from Xiaomi
Starting with MIUI 12.5, Xiaomi has added Memory Extension, which allows you to use part of the internal memory as additional RAM. On the Redmi 7A, this option works with limitations, but remains the safest option.
How to activate:
- 📱 Open the Settings. → The phone. → Additionally. → Memory Extension
- 🔧 Select the amount of virtual RAM (available 1-3 GB, but recommend no more than 1 GB)
- 🔄 Restart the device to apply changes
Warnings:
⚠️ Attention: Virtual memory is slower than physical RAM. When you choose 3 GB, you will lose the same amount of space in internal memory, and the performance gain will be minimal.
The effectiveness of the method depends on the use case. 1 GB of virtual RAM will be enough to launch Telegram and YouTube at the same time, but for games like PUBG Mobile or Genshin Impact, it will not make the difference.
System optimization: how to "free" RAM without upgrading
Before taking drastic measures, try software tricks that will reduce the memory load:
- 🚫 Turn off the autoload of applications through Settings → Annexes → Auto-start
- 🔄 Use Performance Mode in Settings → Battery → Regimes
- 🗑️ Clean the cache regularly through Settings → Warehouse → Clean up
- 📴 Install lighter versions of apps (e.g. Facebook Lite instead of the main client)
Pay special attention to background activity. Even closed applications can take up RAM through services. Check this in Settings → Apps → Permissions → Autostart and disable all unnecessary.
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Turn on the "Limit background activity" option in the battery settings. This forcefully closes applications after folding, saving up to 30% of RAM.
For advanced users, there is a way to disable MIUI Optimization via ADB:
adb shell pm disable-user --user 0 com.miui.analytics
adb shell pm disable-user --user 0 com.xiaomi.mipicksThis will remove unnecessary system processes, but may disrupt some MIUI features.
3. Root access and modifications: risky but effective methods
If you’re willing to sacrifice the warranty, unlocking the bootloader and getting root rights will open up tools like RAM Expander (SWAP) or Kernel Adiutor. On the Redmi 7A with a Qualcomm Snapdragon 439 processor, this is feasible, but requires caution.
Step-by-step:
- Unlock the bootloader through the official Xiaomi tool (it will take 7-14 days to wait)
- Install custom recovery (TWRP) for your model
- Use Magisk to get root rights
- Install RAM Expander and set up a swap file on your memory card (we recommend no more than 512 MB)
⚠️ Warning: Incorrectly configuring a swap file on a slow microSD will slow down the system instead of speeding up. UHS-I (U3) higher.
The alternative is custom kernel firmware with zRAM (real-time RAM compression). The Redmi 7A will fit the Pixel Experience or Havoc OS kernel, but this requires experience with fastboot and risks "bricking" the device.
What is zRAM and how does it work?
4. Hardware replacement of the RAM chip: myth or reality?
Technically replace the RAM chip with Redmi 7A It's possible, but it's a very complicated and expensive procedure. LPDDR3 (2 × 4 Gbit chips SK Hynix H9HKNNNDBMAUJR), soldered to the motherboard in PoP (Package-on-Package) format together with the processor.
Problems with this upgrade:
- 🔧 Re-drinking is required. BGA-chips on professional equipment (cost of work) ~5-10 thousand rubles.)
- 🔍 You need to find compatible chips with identical wiring (for example, from Redmi). 8A with 3GB of RAM)
- ⚡ Risk of damage to the processor during heating (soldier temperature) ~220°C)
- 📉 Loss of warranty and possible stability issues
| The donor model | The volume of RAM | Compatible with Redmi 7A | Notes |
|---|---|---|---|
| Redmi 8A | 3GB | Partial | Firmware modification required |
| Redmi 9A | 2/3 GB | Low. | Another generation of processors |
| Poco C3 | 3/4 GB | Tall. | Similar platform, but different memory manufacturer |
The conclusion is that hardware upgrades to RAM on the Redmi 7A are not feasible, the cost of work and risks exceed the price of the smartphone itself, and it is better to consider buying a model with a large amount of memory (for example, the Redmi 9A or Poco M3).
5. Alternative solutions: when to increase RAM is impossible
If neither method is suitable, there are workarounds:
- 🖥️ Use Xiaomi Cloud to unload data (photos, documents)
- 🎮 Use Game Turbo for games (includes in the notification curtain)
- 🔄 Set up Developer Options → Limit background processes in 2-3 process
- 📱 Buy a smartphone with a large RAM (from 4 GB) – often it is cheaper than upgrading the old one
The Redmi 7A uses light firmware, such as LineageOS 16 (Android 9) consumes 300-400 MB less RAM than a standard MIUI. The installation requires an unlocked bootloader, but does not require root rights.
Make a backup of data through TWRP|Download firmware for the pine model (codename Redmi) 7A)|Check the bootloader version (fastboot getvar anti)|Disable encryption in settings-->
6. Frequent mistakes and how to avoid them
Users often make critical mistakes when trying to increase RAM:
- Slow microSD swap: Class 10 cards don't fit, you need UHS-I (U3) or A2, otherwise the system will brake more than without swap.
- Installation of incompatible cores: Cores for Redmi 8A or Poco C3 may not work on Redmi 7A due to different CPU versions.
- Exceeding virtual memory limits: Choosing 3GB in Memory Extension on a model with 2GB of physical RAM will lead to constant reboots.
Another common problem is conflicts with Magisk modules, such as the RAM Disk Swap module, which may not work with Virtual RAM Generator, and check compatibility on XDA Developers or 4PDA forums before installing.
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The Redmi 7A offers the safest possible 1GB of RAM gain through Memory Extension + system optimization. All other methods require deep technical knowledge and are risky.