After overclocking iPhone or iPod Touch your iDevice will be faster and more efficient. We stress however that the operation is dangerous and might brick your iPhone too. In order to unlock the functionality, follow our guide to overclock your iPhone.
Steps to Overclock or increase CPU Speed of iPhone and iPod Touch
Step 1. Navigate to System/Library/System/System Configuration/PowerManagement.bundle/
Step 2. You will see a file named “com.apple.SystemPowerProfileDefault.plist”
Step 3. Instead of editing, you are just rename it to “SystemPowerProfileDefaultbak.plist” so the device does not recognize it.
Step 4. Do a reboot and you overclock your iPhone.
Increasing the clock speed can cause the CPU’s lifespan reduce and is therefore not recommended. Do at your own risk. I will not be held responsible for bricking your iPhone.