Many users wonder how to use all cores on Android, believing that their smartphone is not working at full capacity. Indeed, manufacturers often limit the processor frequency or disable some cores in power saving mode for the sake of device autonomy. However, when running heavy games or resource-intensive applications, you may need maximum output from hardware.
Under standard conditions, the operating system itself decides how much computing resources to use right now. But this algorithm is not always ideal. Sometimes Android makes a mistake, leaving powerful cores in “sleep” mode, which causes the interface to slow down and games to run jerkily. Intervention CPU Scheduler can dramatically change the situation.
Before making changes, it is important to understand the architecture of your processor. Modern chips, be it Snapdragon, MediaTek or Exynos, use big.LITTLE technology. This means that the cores are divided into energy-efficient and productive. Our goal is to force the system to more actively attract powerful units to work.
Processor architecture and core operation in Android
To understand how to overclock a processor, you need to understand how multi-cores work. Unlike old computers, where all the cores were the same, mobile devices use a heterogeneous structure. Clusters of cores have different frequencies and are intended for different tasks.
Small cores (LITTLE) are responsible for background processes, reading text and waiting for calls. Large cores (big) are turned on only under high load. The problem is that the threshold for turning on large cores in stock firmware may be too high. The system can keep the load on small cores up to 100% before using powerful ones, causing lags.
The operating system uses special drivers called CPU Governors. They are the ones who control frequency switching and core activation. Standard settings are often conservative to avoid overheating and rapid battery drain.
Here are the main types of cores you'll encounter:
- 🔋 Eco-cores —ultra-efficient cores for background work and minimal consumption.
- ⚡ Performance-cores —powerful cores for gaming, video rendering, and heavy applications.
- 🔄 Hybrid-cores —an intermediate option found in new ARM architectures, balancing between speed and heat dissipation.
The need for root access and device preparation
Interfering with the operation of the system scheduler requires superuser rights. Without Root access you will not be able to change frequency parameters or forcefully wake up sleeping cores. Standard developer tools are powerless here, since they only concern debugging applications, and not managing hardware.
Obtaining administrator rights is a risky process. Incorrect actions can lead to the “brick” of the device or loss of warranty. Before you begin, be sure to take a complete backup of your data. Make sure that the battery charge is at least 60%, and the drivers are ADB installed on the computer.
⚠️ Attention: Modifying the kernel system files can lead to unstable operation of the smartphone or an endless reboot loop (bootloop). You perform all actions at your own peril.
To work, you will need an unlocked bootloader (Bootloader). On devices Xiaomi or Huawei this requires a separate unlocking procedure through official utilities. Without an open bootloader, installing a custom recovery and obtaining root access is impossible.
The preparation process includes:
- 🔓 Unlocking the bootloader via Fastboot or manufacturer service codes.
- 📲 Installing a custom recovery, for example, TWRP or OrangeFox.
- 🛡️ Magic patch firmware Magisk to obtain stable Root access.
Tools for managing kernels: Kernel Adiutor and analogues
After obtaining superuser rights, the access to dozens of applications for fine-tuning. Kernel Adiutorremains the leader in this niche for many years. This application allows you to visually manage kernel parameters without having to write code manually.
There are other alternatives such as Franco Kernel Manager or KMManager. They provide similar functionality: frequency control, voltage control and scheduler settings. The choice of a specific application depends on compatibility with your version Android and processor type.
In the app interface you will be interested in the CPU and CPU Governorsections. This displays the current frequency of each core in real time. You can see how the system transfers tasks between clusters. The main task is to change the algorithm of the scheduler.
Main features of the software for managing cores:
- 📊 Monitoring the load of each core in real time.
- ⚙️ Change CPU Governor to a more aggressive profile.
- 🚀 Forced setting of the minimum frequency for all cores.
Configuring the CPU Governor and changing frequencies
The most effective way to make all cores work more actively is to change the control profile (Governor). By default, Android is often profile interactive or ondemand. They try to save energy by sharply increasing the frequency only when you touch the screen.
For maximum performance, it is recommended to select profiles performance or interactive_plus. In performance mode, the processor always operates at maximum frequencies, ignoring idle times. This ensures that all cores are ready to work instantly, but the battery will drain faster.
You can also manually raise the minimum frequency (Min Frequency). If you set the minimum frequency equal to the maximum, the cores will stop going to sleep. This is a radical method that turns a smartphone into a desktop gaming computer, but requires a constant connection to charging or powerful cooling.
☑️ Check before overclocking
Parameters that can be changed in the processor menu:
- 🎚️ Max Frequency — upper limit of clock frequency (overclocking).
- 🛑 Min Frequency —the lower limit below which the core will not fall.
- 🔄 GPU Frequency —the frequency of the graphics accelerator, which is important for games.
Comparison of energy saving and performance profiles
Understanding the difference between the profiles is critically important. You should not keep the maximum performance mode turned on all the time. This will lead to battery degradation and possible throttling (reset of frequencies due to overheating).
Below is a table comparing the main types of core management profiles:
| Profile (Governor) | Core behavior | Impact on battery | Recommended use |
|---|---|---|---|
performance |
All cores at max. frequency | Critical | Heavy games, benchmarks |
interactive |
Growth when touching the screen | Moderate | Everyday use |
ondemand |
Smooth growth under load | Good | Reading, web surfing |
powersave |
Minimum frequencies | Excellent | Standby mode, navigation |
The optimal strategy is to create scenarios. For example, use a profile interactive for the system and switch to performance only when starting an emulator or a heavy 3D game. Some applications allow you to automate this process.
If you plan to keep the cores active for a long time, take care of the heat sink.
Risks of overheating and system stability
Activating all cores at maximum frequencies generates a huge amount of heat. Mobile processors do not have active cooling (fans), relying only on passive heat dissipation through the body. Thermal throttling can negate all your optimization efforts.
If the phone overheats, the system itself will turn off some of the cores or reset the frequencies, regardless of your settings in Kernel Adiutor. Moreover, continuous operation at maximum capacity will shorten battery life and may cause the battery to swell.
⚠️ Attention: Prolonged operation of the processor at maximum frequencies without external cooling can lead to the screen peeling off or damage to the cables due to expansion of materials.
Monitor the temperature in real time. To do this, you can use monitoring widgets or built-in functions of game modes. If the temperature exceeds 45°C during idle or 60°C under load, it is worth reducing the aggressiveness of the settings.
Signs of system instability after overclocking:
- 📉 Sudden reboots or interface freezes.
- 🔋 Abnormally fast battery discharge (for example, 20% in 15 minutes).
- 🌡️ Heating of the case in the processor area even without running applications.
Alternative optimization methods without Root
If obtaining superuser rights is impossible or undesirable, there are less radical methods. They will not allow you to force all cores to turn on, but will help the system distribute the load more efficiently. First of all, this is Developer options.
In the developer menu you can find the “Background processes” item. Limiting the number of background processes will free up resources for the active application. It is also worth disabling animations, which will visually speed up the system response, reducing the load on GPU.
Some manufacturers (Samsung, Xiaomi, Asus) have built-in game modes. They often already have profiles that keep the cores in good shape during the game. Check the settings of “Game Turbo”, “Game Launcher” or “Game Genie” before installing third-party software.
⚠️ Attention: Interfaces and names of menu items may differ depending on the version of Android and the manufacturer’s shell. Always check the official manuals for your model.
Additional tips for speeding up without Root:
- 🧹 Regularly clear RAM of heavy applications.
- 🚫 Disable live wallpapers and widgets that consume CPU.
- 🔄 Reset the settings to factory settings if the system is heavily clogged with junk.
Is it safe to keep all cores active at all times?
No, it is not safe for long-term use. Constant operation at high frequencies causes battery degradation and wear on the processor crystal. Use maximum performance only when necessary.
Will battery consumption increase significantly?
Yes, consumption can increase by 2-3 times. The mode performance does not allow the cores to go into power-saving mode, so the phone can run out of power in 2-3 hours of active screen.
Do you need to reset the settings after overclocking?
If you changed the kernel parameters through an application like Kernel Adiutor, they are reset after a reboot. To save them, you need to use the “Apply on Boot” function inside the application, but this requires the correct configuration of the startup scripts.
Will this help in ordinary applications like a browser?
Unlikely. Browsers and social networks are optimized to work at medium frequencies. Forced activation of all cores will not speed up page loading, since the bottleneck here is the Internet speed, not the CPU power.
Is it possible to return everything as it was?
Yes. Just reboot your device. Since changes in frequencies and governors are stored in RAM, after a reboot (reboot) the system will load standard factory profiles.