How to Fix Apple iPhone 7 Dead Not Charging U2

iPhone 7 Dead Not Charging U2

Is your iPhone 7 Dead Not Charging U2? Is it showing Error 14 or Error 9? Is there an iPhone 7 U2 charge IC Fault?

Don’t panic because these are common problems and may happen even with the new handsets. Charging issues may occur due to a firmware (or software) issue or a hardware problem which is hindering the phone from properly detecting current that flows through its logic board. Here are some issues that you may be facing with your iPhone 7.

Symptoms:

  1. Battery doesn’t charge past 1%
  2. Phone remains lifeless even after connecting power adapter
  3. iPhone is automatically powering on
  4. iPhone reboots on Apple logo
  5. iPhone is dead non-responsive

There can be several reasons for this malfunctioning and basically, it is impossible to immediately know the reason why your new iPhone 7 isn’t charging. The prominent reason why iPhone 7 can appear dead or lifeless is the malfunctioning of a small component called U2 IC which controls the charge to the battery. The U2 also runs the power to the sleep-wake button and controls the USB functions and regulates the charging to the power IC that charges the phone.

Read on to get more comprehension of the issue and how to fix it given that it’s not caused by a serious hardware problem.

The iPhone 7 charging process doesn’t just involve a hardware-to-hardware situation but the firmware also plays a significant role in allowing the battery to charge.

Causes:

If your iPhone 7 Dead Not Charging U2 could be because of following issues:

  1. iPhone 7 U2 charge IC Fault
  2. Power adapter malfunctioning
  3. Firmware crash
  4. Charging cable malfunctioning
  5. Charging port not working

We are here offering you some trouble shooters for your rescue. Let’s walk through them point by point.

  1. iPhone 7 U2 charge IC fault

iPhone 7 U2 charge IC fault

The iPhone 7 can have a major problem with the logic board. This occurs when the correct genuine cable is not used. The original cable has an IC inside it which the phone looks for when it is plugged into charge. If you use a fake cable to charge your iPhone 7 you may run the risk of blowing the U2 IC.

  1. Issues with power adapter

Power Adapter

The power adapter or a charger is the primary source of power that’s stored in your phone’s battery. If damaged, the phone won’t charge or can’t continue charging as the amount of current being pushed to the phone may be too little or too much especially if the regulator is damaged.

Liquid damage is the prominent cause for the faulty functioning of a charger. Try to check if you can find residue of water or any liquid for that matter in the charger’s port.

Sometimes the pins in the port get bent, in such a case, the problem is as trivial as a contact issue.

Talking about triviality, there may be a problem in your power outlet so try plugging the charger into a different power outlet just to make sure it’s not a source problem. One may also try connecting other devices to the charger to see if they would charge because if so, then the power adapter may be just okay.

  1. Firmware crash

Firmware Crash

Although Apple is known for its very stable operating system, still there are times when the firmware crashes and when it happens, the phone may freeze and become unresponsive with a blank screen. There is a little something that you can do about it.

In case you see Error 14, there is a possibility that the USB connection between your device and computer is interrupted & you might not be able to update or restore. To narrow down the issue:

  • Try different equipment.
  • Use the USB cable that came with your device, or a different Apple USB cable.
  • Plug your cable into a different USB port directly on your computer.

If your iOS device disconnects during the update or restore or if iTunes couldn’t tell the device to restore, you might see Error 9 flashing on the screen. To narrow down the issue, try these steps:

  • Install the latest version of iTunes.
  • Force your device to restart: On an iPhone 7 or iPhone 7 Plus, press and hold both the Sleep/Wake and Volume Down buttons for at least ten seconds, until you see the Apple logo.
  • Connect your device to your computer using a USB cable.
  • When iTunes asks you to update or restore, click Update (not Restore) to reinstall iOS and keep your personal data.
  1. Charging cable not functioning properly

Charging cable not functioning properly

Physical test: Inspect the cable for breaks from one end to the another. If not, then check both ends for some inconsistencies in the connectors. If one of them is missing or bent, then you probably just need to get a new cable.

Functional test: If no physical issues are found, connect your iPhone 7 to your computer to see if it gets detected and recognised. If the cable is not functioning properly, the phone won’t be detected by any computer and this is the best way to verify where the problem really is.

  1. Check your phone’s charging port

iPhone 7 Charging Port

With the charger and cable functioning properly, now is the time to check the phone itself. The best that can be done is to check the utility port itself. Check for foreign materials that may hinder proper contact between connectors of the phone and the cable.

Help is on hand! To repair this issuepost it into us well have you back up and running in no time!

iPhoneBits

 

Join the discussion 2 Comments

  • Sina says:

    Hi
    I have charging problem that may cause of using fake cable, my iphone7 don’t charge correctly, sometimes going to 80% and stop and sometimes not charging at all.yet i use original cable it say this accessory may not be supported. so like you said seems that i had blew the U2 IC.
    do you think that i should change U2 IC? and it will fix my iphone properly? or there is risk of blowing something else and have another problem after that?

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