How to enable all processor cores on Android: safe and risky methods

Multitasking, games and resource-intensive applications often require maximum performance from a smartphone. Many users Android have heard about the ability to enable all processor cores to speed up the device. But how effective is it? And most importantly, is it safe?

Modern smartphones use multi-core processors (CPU) with dynamic control of cores. The system automatically activates only those cores that are needed at the moment to save battery power and reduce heat. However, in some cases, forcing all cores to be turned on can give a temporary performance boost - for example, in games or when rendering video.

In this article we will analyze all the possible ways to activate the cores, their pros and cons, as well as alternative optimization methods that do not require manual intervention in the processor. You will learn what tools exist for this, how to avoid common mistakes, and what to do if, after the changes, the smartphone begins to overheat or quickly discharges.

Why doesn’t Android use all cores all the time?

Smartphone manufacturers and developers Android have long abandoned the idea of ​​constant operation of all processor cores. There are several reasons for this:

• 🔋 Energy efficiency. Each active core consumes power, even when the load is minimal. This reduces battery life.
• 🌡️ Heat dissipation. The more cores work simultaneously, the hotter the processor gets. Overheating can lead to throttling (automatic reduction in frequency) or even damage to the chip.
• ⚖️ Performance balance. Modern processors (Snapdragon, Exynos, Mediatek) have different types of cores: powerful for heavy tasks and energy-efficient for the background. The system itself chooses the optimal combination.

However, in some scenarios, forcing all cores to turn on may be justified. For example, if you are running benchmark (performance test) or playing a demanding game where every frame per second matters. But remember: this is a temporary solution, not a permanent setting.

⚠️ Attention: On most modern smartphones (2022 and newer) with processors Snapdragon 8 Gen 2/3 or Dimensity 9000+ manual control of the cores may be blocked at the firmware level. Check the compatibility of your model before starting.

Method 1: Using the engineering menu (MTK and some Snapdragon)

On smartphones with processors Mediatek (Helio, Dimensity) and some models Qualcomm Snapdragon there is a hidden engineering menu where you can manually manage the cores. This method does not require root access, but does not work on all devices.

Instructions:

1. Open the application Phone and enter the code: ##36446337## (for Mediatek) or ##4636## (universal).
2. In the menu that opens, select MTK Settings → CPU Core Control (name may vary).
3. Activate all cores by checking the boxes or selecting the option Enable All Cores.
4. Save the changes and reboot the device.

If the code did not work, try alternative combinations for your model:

• 📱 For Samsung Exynos: *#9900# (SysDump)
• 📱 For Xiaomi on Snapdragon: ##225## (Calendar Storage)

⚠️ Attention: Changes in the engineering menu may be reset after a system reboot or update. Some manufacturers (for example, Samsung and OnePlus) block access to these settings on new firmware.

Make a backup copy of your data|

Charge the phone to at least 50%|

Make sure that the model supports codes|

Prepare for possible overheating-->

Method 2: Applications to manage cores (root required)

If your smartphone has root access, you can use specialized applications to fine-tune the processor. The most popular: Root access turns on all cores when running selected applications.

• 🛠️ Kernel Adiutor - supports most kernels Linux, allows you to control frequencies and cores.
• ⚡ FrancoKernel Manager - optimized for processors Qualcomm, has performance profiles.
• 📊 CPU Tuner — automatically turns on all cores when running selected applications.

Example setting in Kernel Adiutor:

1. Open the application and go to the section CPU.
2. Select Core Control.
3. Activate the option Enable All Cores or manually enable each core.
4. In the section Governor select a profile Performance for maximum performance.

Important: After applying the changes, monitor the processor temperature. If it exceeds 70°Creturn the settings to factory settings.

What is governor in CPU settings?

Governor (regulator) is an algorithm that controls the frequency and voltage of the processor. For example, the "Performance" profile keeps the maximum frequency constantly, and "Powersave" reduces it to save energy.

Application	Root support	Compatible processors	Features
Kernel Adiutor	Yes	All (ARM/ARM64)	Support for custom kernels, profiles
FrancoKernel	Yes	Qualcomm Snapdragon	Optimization for gaming modes
CPU Tuner	Yes	Most	Automatic inclusion of kernels for applications
SetCPU	Yes	Outdated models	Simple interface, but not updated

Method 3: Editing kernel files manually (for experienced)

This method requires root access knowledge of commands ADB or working with the file system Android. It is suitable for advanced users who want maximum control.

Main files responsible for managing kernels:

• /sys/devices/system/cpu/cpuX/online — enables/disables the kernel (where X is the kernel number, for example cpu0, cpu1).
• /sys/devices/system/cpu/cpufreq/scaling_governor — manages the profile performance.

Example commands via ADB:

adb shell
su
echo 1 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu2/online
echo performance > /sys/devices/system/cpu/cpufreq/scaling_governor

On some smartphones (for example, Google Pixel or Samsung Galaxy S23), these files may be blocked even with root access due to the manufacturer's security policy.

Method 4: Using custom kernels and firmware

If standard methods do not work, you can install custom kernel or firmware, which is initially optimized for maximum performance. Popular options:

• 🔧 FrancoKernel - for devices on Qualcomm Snapdragon.
• ⚡ ElementalX - supports many models. Google Pixel i OnePlus.
• 📱 LineageOS —custom firmware with flexible CPU settings.

Installation process:

1. Unlock bootloader (this will reset all data!).
2. Install custom recovery (for example, TWRP).
3. Download a compatible kernel or firmware from the forum XDA Developers.
4. Flash through TWRP and reboot the device.

Advantages of custom cores:

• 🔥 Possibility of overclocking (overclocking) or, conversely, undervolting to save energy.
• 🛡️ Support for additional governor profiles (for example, zzmoove or darkness).
• 🔄 Flexible configuration of enabling/disabling cores under load.

⚠️ Attention: Installing custom cores may lead to loss of warranty, unstable operation, or even “brick” (breakage) of the device. Always check compatibility with your smartphone model.

Qualcomm Snapdragon|

Mediatek Dimensity/Helio|

Samsung Exynos|

Google Tensor|

Other (specify in comments) -->

Risks and side effects of enabling all cores

Before activating all cores, read the possible consequences:

• 🔥 Overheating. Constant operation of all cores increases heat generation. This may lead to an automatic decrease in performance. (throttling) or even turning off the device.
• 🔋 Battery drains quickly. Energy consumption will increase by 30–50%, which will reduce battery life.
• ⚠️ System instability. On some devices, forcing cores to turn on causes lags, reboots, or application errors.
• 🛡️ Loss of warranty. If changing the settings required root or unlocking bootloader, the manufacturer may refuse warranty repairs.

To minimize risks:

• 📉 Use forced inclusion of cores only when necessary (for example, for games or benchmarks).
• ❄️ Monitor the temperature using applications like AIDA64 or CPU Monitor.
• 🔄 Return to standard settings after completing resource-intensive tasks.

On smartphones with passive cooling (without fans) the risk of overheating is higher. This is especially true for devices with processors Mediatek Helio G series or Snapdragon 7xx.

Alternative ways to increase performance without risks

Enabling all cores is not the only way to speed up a smartphone. Consider safer alternatives:

• 🧹 Background cleaning. Close unnecessary applications in the menu Recent or use Greenify to "freeze" background processes.
• ⚡ Game mode. Many manufacturers (Xiaomi, ASUS ROG, Black Shark) add special modes for games to the firmware, which optimize performance without manual settings.
• 🔄 Software update. New versions Android of firmware often contain optimizations for the processor. Check for updates in Settings → System → Software update.
• 🗑️ Cache clearing. Regularly clear the application cache and Dalvik cache (via recovery or SD Maid).

It is also worth paying attention to:

• 🔋 Performance mode in the battery settings. On some smartphones (Samsung, Huawei) you can select profile Maximum performance in the power settings.
• 🎮 Booster applicationsUtilities like Game Booster 4x Faster or GFX Tool optimize graphics and CPU settings for specific games.

What to do if your smartphone overheats or slows down afterward. changes?

If, after turning on all cores, the device begins to behave unstable, follow these steps:

1. 🔄 Return the default settings. Disable forced activation of cores in the engineering menu or application.
2. ❄️ Cool down the device.Turn off the smartphone for 10-15 minutes. Avoid direct sunlight.
3. 🔋 Check the battery.Use the app AccuBatteryto assess the condition of the battery. Excessive wear may exacerbate overheating problems.
4. 🛠️ Reset the settings to factory settings. If the problem persists, reset to Settings → System → Reset (don't forget to make a backup!).

If the smartphone does not turn on or freezes logo:

• 📱 Try going to recovery (usually Power + Volume Up) and do Wipe Cache Partition.
• 🔧 If there is a custom recovery, flash the stock kernel or firmware.

As a last resort, contact a service center, but keep in mind that the warranty may not apply to devices with changed system settings.

How to avoid throttling (reduced performance due to overheating)?

Use cooling pads for games, reduce screen brightness, close background applications and avoid prolonged use in hot conditions (for example, in the sun or in a stuffy room).

FAQ: Frequently asked questions about enabling all cores on Android

❓ Is it possible to enable all cores without root?

On most modern smartphones - no root access Only engineering menus are available (for Mediatek and some Snapdragon), but their capabilities are limited. Applications from Google Playthat promise to “unlock cores” without root, as a rule, do not work or are fraudulent.

❓ Will there be a noticeable increase in performance in games?

Depends on the game and processor. In heavy 3D games (for example, Genshin Impact or Call of Duty Mobile), the increase may be 5–15 FPS, but only if the remaining components (GPU, RAM) are not a bottleneck. On weak smartphones (for example Snapdragon 6xx or Helio G35) the effect will be minimal.

❓ Why did the smartphone begin to discharge faster after turning on all the cores?

Each active core consumes energy, even if the load is minimal. For example, one core consumes ~50 mW when idle, and up to 1500 mW under load. If all 8 cores work simultaneously, battery consumption increases significantly. To save power, turn it off. unnecessary cores after completing resource-intensive tasks. Snapdragon 888 one core Cortex-X1 at idle it consumes ~50 mW, and under load - up to 1500 mW. If all 8 cores work simultaneously, battery consumption increases significantly. To save battery power, disable unnecessary cores after completing resource-intensive tasks.

❓ Does this method work on iPhone?

No. iOS is completely closed to such changes. Apple does not provide users with access to control processor cores, even with jailbreak All optimizations are performed at the level. system.

❓ Is it possible to enable all cores forever?

Technically, yes, but this is highly not recommended. Constant operation of all cores will reduce battery life, increase processor wear and lead to frequent overheating. It is better to use this function situationally - for example, only during games or benchmarks.