How To Overclock And Underclock Android Phone

Unlocked Android
TechLatest is supported by readers. We may earn a commission for purchases using our links. Learn more.

Every year there are a lot of Android phones pop up in the market. As years pass on, Android devices tend to get obsolete. If you feel your phone starts lagging at any point, overclocking and underclocking are the only ways to fix it.


Before you jump into the procedures


  • Make sure not to set your CPU’s frequency to neither too high nor too low; this can cause worse results, and you may lose your Android Phone forever.
  • If you set CPU’s frequency too high, it may cause overheating of the processor, which can burn the processor, and you will lose your device.
  • If you set CPU’s frequency too low, then its CPU can go to sleep’s condition forever, and again you will lose your device.


Outdated processors and low RAM are reasons Android phones start hanging at some point in time. Limited CPU clock speed is the major reason for the underperformance of Android.

To fix this issue, one needs to overclock the Android device. However, one needs to have superuser access in order to tweak the performance of Android phones.

  • Fast processes

  • Better CPU utilization

  • Play games without any lag

  • The phone may go into an unstable condition and need to reboot

  • Due to over-performance, battery consumption will be high

  • If you exceed clock speed beyond a limit, then the phone may get heated up

Things to Have Before Overclocking Android Device

Before going ahead with the overclocking process, you need to have the following things:

  • Rooted Android Device
  • The device should be fully charged
  • Take the Nandroid Backup of your Android files
  • Download the Overclocking App from the Google Play Store

How to Overclock Android [Step-By-Step]?

  • Firstly, root the Android Device by following these guides (One, Two).
  • Now, download and install overclocking app like SetCPU for Root Users from the Google Play Store.
SetCPU App- Overclock And Underclock Android
  • Launch this app and give superuser access.

After you give the superuser access, follow the steps given below on the SetCPU app:

  • Firstly, allow the app to scan the speed of the processor.
  • Once the speed is detected, configure the minimum and maximum speed.
  • It is important to switch the Android CPU. Moreover, do not try to increase the CPU speed instantly.
  • Check the options one by one and see what works for your device.
  • Once you see the speed of your Android device is stable, tap on the ‘Set to Boot’ option.
  • Now, create a profile and set the conditions when you want to overclock the CPU.

Underclocking (or Undervolting)

If you want to increase the battery life of your Android device, underclocking is the best way. However, when you underclock the device, you cannot expect high performance from the Android device. It only improves the battery life of the device.

  • It will save your Android Phone battery.

  • Battery consumption will be less compared to normal consumption

  • Phone performance will slow down

  • Unable to use any heavy application, which requires fast CPU speed for its execution

How to Underclock Android Device?

Method 1: Flash the Kernel (Franco)

  • Firstly, download the stable kernel (Franco)on your Android device.

Also, Read: Top 5 Custom Kernels For Android

  • After downloading the latest kernel, check the device’s option to flash and reboot.

Also, Read: How to Install Custom Kernel on Your Android Smartphone

  • Once the device rebooting is done, re-open the kernel app and set the frequencies.
  • Tapping on the ‘-25mV’ option will reduce the voltage, which is one of the best ways to reduce battery consumption.
  • Now, set the voltages in the boot box and restart the device.

Once the restart is performed, you can find the difference in terms of battery consumption.


Method 2: Manual Flashing

If you cannot use the Franco kernel, we recommend you manually flash the Android device. For that, you can navigate to the top kernels page and find a suitable kernel for your phone. Download and flash the same kernel as you would do with a custom ROM.

Method 3: Use Voltage Control

After flashing any kernel, use the Voltage Control Extreme app to control the voltage settings on your Android device. However, you need a stable kernel and a compatible Android device to perform this action.


These are some of the best techniques you can try to overclock and underclock your Android device. Underclocking is the best choice if you want to compromise on performance but are looking for the best battery life.

On the other hand, overclocking your Android device works like a charm if you are a power user.

Leave a Comment
Related Topics
Notify of
1 Comment
Inline Feedbacks
View all comments