Replacing the iPhone 4 Power Controller

Замена контроллера питания iPhone 4

Replacing the iPhone 4 power controller is a rather complicated procedure. Of course, it is impossible to make a replacement without skills and special equipment. The iPhone 4 was one of the most popular smartphones of its time.

However, like any electronic device, problems with its operation may occur over time. One of the common causes of problems is a malfunction of the power controller.

In this article, we will look at what a power controller is. How to determine the malfunction of the power controller and how to replace it with an iPhone 4. If you do not have the skill to repair smartphones, it is better to contact the service center.

Replacing the iPhone 4 Power Controller

To begin with, let’s define what a power controller for iPhone 4 is. A power controller is a chip responsible for supplying power to various components of a smartphone.
It provides a stable voltage and current for the operation of all important elements. These are processor, display, camera and others. If the power controller fails, it can lead to various problems, including charging problems. As well as disconnecting the device or even completely inoperable.

Signs of a power controller malfunction

  1. Charging problems. If the iPhone 4 does not charge or the charge lasts for a very short time, this may be a sign of a malfunction of the power controller.
  2. Disconnecting the device. If the iPhone 4 turns off regularly for no apparent reason, the problem may be related to the power controller.
  3. Overheating. If the smartphone gets very hot during operation, this may indicate a malfunction of the power controller.
  4. Broken components. If any components of the iPhone 4, such as the display or camera, stop working, the power controller may be the culprit.

Replacing the iPhone 4 Power Controller – preparation

Before you start replacing the power controller, make sure that you have all the necessary tools and accessories. You will need the following items:

  • New power controller. Get a new power controller compatible with iPhone 4. Make sure it matches the model of your device.
  • Tools. To replace the power controller, you will need screwdrivers, tweezers, a soldering station and a soldering flux.
  • Protective equipment. Don’t forget to put on antistatic armbands and wear safety glasses to avoid damaging your smartphone or your eyes.

Algorithm of actions

Steps to Replace the Power Controller on iPhone 4:

  1. Disconnect the iPhone 4: Before starting work, make sure that the smartphone is completely turned off and disconnected from the power source.
  2. Remove the back cover: Using a suitable screwdriver, gently open the back cover of the iPhone 4 and remove it.
  3. Disconnect the battery. Using tweezers, carefully disconnect the battery connector from the device board.
  4. Locate and remove the old power controller. Inspect the iPhone 4 board and find the power controller. Solder it off with a soldering station and carefully remove it.
  5. Install a new power controller. Insert the new power controller in its place and carefully solder it to the device board.
  6. Check the connection. Before reassembling the iPhone 4, make sure that the power controller is properly connected and securely attached to the board.
  7. Assemble the iPhone 4. Gradually assemble all the components of the smartphone in reverse order, following the instructions for removing the back cover.
  8. Check the operation. Connect your iPhone 4 to a power source and make sure it turns on and functions properly. Check the operation of the charging, display and other components.

Replacing the iPhone 4 Power controller – recommendations

Important points and recommendations:

  • When replacing the power controller on the iPhone 4, be very careful and careful. Improper installation or damage to other components can lead to additional problems.
  • If you are not sure of your repair skills, it is recommended to contact professionals. They will be able to quickly and efficiently replace the power controller on the iPhone 4.
  • Before starting work, make sure that you have enough time and a quiet workplace to avoid mistakes and damage.


Replacing the power controller on the iPhone 4 is a procedure that can be performed independently if you have the necessary tools and skills. However, if you are not sure of your abilities, it is better to turn to professionals.

Do not forget about safety at work and follow the instructions. This will allow you to successfully replace the power controller and return the iPhone 4 to its operability. Remember that rarely, but still a new controller may be faulty.