How to fix iPhone 8 Plus that won’t charge or turn on after overnight charging

Are you fond of leaving your iPhone 8 Plus connected to the wall outlet while you’re sleeping? Below is a good lesson that should tell you not to.

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When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

How to fix iPhone 8 Plus that won’t charge or turn on after overnight charging

Hello there, I have an iPhone 8 Plus and it will not charge. It was working completely fine all night, then I went to bed with it on charge and when I woke up the screen was black and it wouldn’t turn on. I then tried a forced restart in case it had frozen but it was unresponsive. I tried using a different cable and plug, I’ve blown out the charging port with compressed air, I’ve tried plugging into my laptop but it doesn’t pick the phone up. I put it down to a power issue so I ordered a new battery and replaced it yesterday but still no luck. I’m not sure what else to do now. Hopefully you can help, Thanks.

Solution: Given that you’ve already tried every possible software troubleshooting and even replaced the battery, we think that the problem is much deeper. Although iPhones are designed to automatically stop charging once battery level has reached 100%, it’s still not recommended to leave them plugged in overnight. While connected to the wall outlet, there’s one potential risk that can kill your phone: power surge.

From time to time, power surges across power lines can occur. Despite many technologies are being used by power companies to eliminate destructive power surges, they can’t be totally eliminated. A power surge can happen for a number of reasons but the most common ones include the following:

  • lightning strike
  • power outage
  • demanding electrical devices or appliances
  • overloaded circuit

While we have no evidence that a power surge had happened while you were charging your iPhone, it’s the most likely reason that we can think of given the fact that you’ve already replaced the battery. A power surge can effectively fry a vulnerable electronic device like an iPhone. Though iPhones have built-in fuse, it’s usually not effective when dealing with sudden high voltage that comes as a result of a power surge. Your iPhone’s Power Management IC (PMIC) may be damaged or some components may had been shorted. If you know how to check individual components, we suggest that begin your hardware troubleshooting with the PMIC or the motherboard in general. If the PMIC is fried, you may be able to make your iPhone work again by replacing it. If it’s a motherboard issue, or if multiple components had been shorted, it’s probably a long shot at this time to revive the phone.

If you can’t do hardware diagnostics, we suggest that you let a professional do it for you. This task requires physical checks so a technician must examine the phone.


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If you happen to have a problem with your own iPhone, let us know about it and we will do our best to post them and their solutions  in our upcoming articles. You can use this link to contact us for assistance. We can’t guarantee an answer to every question but rest assured that we will exhaust everything on our end to help you.

Be as detailed as possible when describing your problem to help us diagnose your issue easily. If you can include error messages, popups, attempted troubleshooting steps, and circumstances leading to the problem, that would be very helpful.

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