iPhone Only Charges In Laptop Or Car, Not The Wall: The Fix!

Your iPhone charges when it’s plugged into the USB port on your laptop or car, but it doesn’t charge when it’s connected to the wall charger. Huh? You’ve tried different cables and different chargers, but your iPhone won’t charge if it’s plugged into an outlet. In this article, I’ll explain why your iPhone won’t charge when it’s connected to the wall outlet, try to explain why it happened, and explain the workaround to fix this mystifying problem.

If your iPhone won’t charge at all, check out my article called My iPhone Won’t Charge to find the help you’re looking for.

Understanding The Problem

I decided to write this article after two people asked me exactly the same question in the Payette Forward Community. I did some Googling and discovered that a lot of people have experienced this problem, but I haven’t seen any real answers. Here’s how the problem usually presents itself:

“My iPhone doesn’t charge when it’s connected to the wall charger. It only charges when it’s connected to a laptop or my car charger. I’ve tried swapping out cables and wall chargers, but it doesn’t make a difference.”

At first I thought it was an issue with a third-party cable or wall-charger, but that wasn’t it. Both people were using Apple-branded cables and chargers. To make things even more confusing, the same cables and chargers that didn’t work with their iPhones worked perfectly with other iPhones.

This was a tricky problem to solve. I knew there had to be a difference between charging an iPhone in the wall and charging it using a computer, but what was it? The computer, car, and the iPhone wall charger all put out 5V (volts), but later I discovered they weren’t exactly the same.

Electricity For The Electrically-Challenged

I don’t have a high-level understanding of the nature of electricity, but I once read an analogy that helped me begin to grasp the concept of voltage and amperage. Here it is:

Electricity flowing through a wire is like water flowing through a garden hose. The diameter of the hose is analogous to amperage, in that it determines the amount of water or electricity that can flow through the hose at one time. The pressure of the hose is analogous to voltage, in that it determines the pressure of the water or electricity that flows into your device.

Aren’t All 5 Volt Chargers The Same?

The key to solving this problem lies in the understanding that not all 5V chargers are the same. The difference between the chargers isn’t the voltage. It’s the amperage.

The iPhone wall charger, laptops, and iPhone car charger are all 5 volt chargers, but the differentiating factor is amperage. The iPhone wall charger delivers a 5V (volt) charge at 1 amp (1A), which is equivalent to 1000 milliamps (1000mA). Most laptops deliver a 5V charge at 500 milliamps (500mA), half the amperage of the iPhone wall adapter.

Why iPhones Charge In A Car Or Computer, But Not The Wall

Your iPhone can’t handle the amperage of your wall chargers (1 amp+), but it can handle the amperage of your car and laptop chargers (500mA). Based on some quick discussions I’ve had with experts, this may be due to a problem with the power input regulator circuit, or voltage regulator.

iPhones are designed to be compatible with chargers from 500mA to the 2.1A iPad charger. My theory is that the circuit inside of your iPhone that differentiates between amperages has been damaged, so your iPhone only accepts the lowest possible amount. This, however, is only a theory.

Can An iPad Charger Harm My iPhone?

No. iPhones are designed to handle higher amperages than the 500mA or 1A put out by the wall charger. Apple’s 12V iPad charger puts out 2.1 amps and is fully compatible with every iPhone according to Apple’s official specifications.

Since amperage determines the amount of electricity flowing through the wire, the higher the amperage, the faster your device charges. iPads will charge using an iPhone charger, but they’ll charge twice as fast if you use the higher-amperage iPad charger. However, some experts say that charging lithium-polymer batteries at higher amperages can shorten their overall lifespan.

How Do I Fix An iPhone That Won’t Charge When Plugged Into The Wall?

Unfortunately, once the power input regulator circuit is damaged on an iPhone, there’s nothing you can do at home to fix the problem. But you’re not totally out of luck.

Even though the 1A Apple wall charger won’t work, you can buy a 500ma wall charger on Amazon that puts out an amperage your iPhone can accept. It’s not a perfect solution, but it’s a lot better than replacing your entire iPhone.

A word of warning: I haven’t personally tested the Amazon 500ma chargers with an iPhone in this scenario, simply because I don’t have one with this problem. I’m not 100% sure a 500mA wall charger will work, but I think it’s worth a try for the $5. It you try it, please let me know how it works out!

If you’re under warranty, a trip to the Genius Bar at your local Apple Store may be in order.

iPhone & Wall: Together Again

We’ve covered a lot in this article, and by now, you know that you can charge your iPhone in the wall, as long as you use a 500mA charger. If you’d like to learn more about the insides of the iPhone charger, this very in-depth article features a full tear-down of your iPhone charger. There’s a lot of technology packed into that little plug!

I’ve heard from some people who say their battery life seems to have gotten worse since they first noticed this problem. If you’re struggling with that too, my article about how to save iPhone battery life can help a lot.

I’d like to hear your experiences with charging your iPhone in the wall, especially if you’ve dealt with this problem. If you decided to pick up a 500mA charger on Amazon, please let me know if it works for you! This is a common problem, and your experience can help a lot of frustrated people.

Thanks for reading, and remember to pay it forward,
David P.

About Author

I'm a former Apple employee and the founder of Payette Forward, and I'm here to help you with your iPhone.

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Emily Park
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Emily Park

fixed the problem by doing a hard reset while having it plugged into a wall charger

John Sakas
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John Sakas

Okay, go figure. I just got home from a trip, and was planning to go to the ATT store to get a new phone. I tried the hard reset one more time (I misspoke below calling it a soft reset) and no luck. I backed up my phone while plugged into the laptop in preparation for loading up the new phone. And just now, i said what the heck I’ll plug into the wall and try the hard rest one more time as I saw Dustin’s post. I plug it into the wall, and before doing the reset it started… Read more »

Dustin Dahm
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Dustin Dahm

Fixed this issue by doing a hard reset on the phone while connected to the wall charger. Hold the home button and the sleep/wake button down simultaneously for 15 seconds.

John Sakas
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John Sakas

Hi, this occurred to me this past Sunday, 7/31/2016. I tried the soft reset multiple times and did not work. I also ordered the suggested Amazon charger, and as a previous member said, that did not work either. I went to a certified Apple store and none of the wall chargers would work except a proprietary one that was equivalent to the small “block” Apple charger. What was also strange is that my phone would charge when they plugged it into a Mophie portable charger that was the 12 volt, 2.1 amp. They suggested a factory reset, so I backed… Read more »

Cheng Nie
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Cheng Nie

Apple online chat support solved my problem (iphone 6s 64G).

1. Backup your phone in case it caused any problem in the process. I backed up to my iCloud before I continued.
2. Connect your phone with the Apple original adapter and cable to the wall.
3. Press both the power and home buttons for 10 seconds.

The phone restarted and the charging on wall worked after the restarting.

Kristian
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Kristian

Hey guys. I have read everything here and what worked for me was to get rid of alot of dust in the charger hole in the phone. There was alot do dust there that made my charger not working. Try that!

Allergic to liars!
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Allergic to liars!

Just did a restart, it did the trick.
Thanks Yatin!

yatin arora
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yatin arora

Hi David,
Thanks for the hack, The same problem had been bothering me for past two days and Just rebooting my phone was able to fix it. Although for some reason it only worked for me when I plugged into my computer and not even my car charging port along with the wall charger. I still have to try it in my car after rebooting it, I will update my comment if it will work in the car as I use a third party accessory in my car.

Tom
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Tom

As I mentioned on Facebook, I had the problem with my iPhone 6 charging when connected to my computer of USB plug in car but no commercial charger, including Apple OE worked. I bought the 500mA charger from Amazon – but no luck. Any other ideas?

pm2001_
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pm2001_

i have an Iphone 5s that does the complete opposite ! charges when plugged into the wall but not when its plugged into my brand new macbook air or into the car. i tried many different wires and it makes no difference. anything that i can do to fix this issue ?

amir
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amir

i have a same problem but i just reset my iPhone by (holding power and home botton for 4 sec) and it did work. now i can charge it with wall charger. thank’s eden scott for sharing your experience. it work’s perfectly. there is no need for 500ma wall charger :D.

Eden Scott
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Eden Scott

I was experiencing the same problem 2 days ago, I just soft power reset my iphone and it normally charges on the wall. ( hold power and home botton for 4 sec) and turn the phone back on. Try it!

hillaryschuster
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hillaryschuster

I’m going to try ordering the Amazon plug. Have you heard back from anyone if it worked? I’ll let you know.

Trinidy
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Trinidy

Okay, I somewhat relate to this… Like, I have a third party charger which is the one that won’t charge then I have the apple one. The apple one work fine with the same adapter I was using. And the third party charger only works in cars/laptops in my case even my couch… I don’t understand. It’s my iPhone 5

Saeed
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Saeed

My iPhone 5s doesn’t read my SIM card