How To Fix Samsung Galaxy S3 Not Charging [Troubleshooting Guide]

We received a lot of emails from Samsung Galaxy S3 owners complaining that their device won’t charge. So, we find it necessary to publish a troubleshooting guide that will walk them through determining what the problem with their phone is so that they would know what to do next.


There are a lot of factors to consider as far as charging problem is concerned and it’s not really that easy to spot where the problem is. It is, therefore, necessary to use technical deduction when troubleshooting. It means that we will have to rule out one possibility after another and we will base that on the possible causes, such as…

  • Damaged or defective charger
  • Broken USB cable or cord
  • Busted battery
  • Loose USB or utility port
  • Phone has liquid damage
  • Device has physical damage


Just to set proper expectations here, troubleshooting doesn’t really mean that the problem will be fixed after you followed the procedure. It is more on finding what’s causing the issue. Once you know what the problem really is, that’s when you formulate a way to fix it or if the problem is beyond what you know, you can seek help from a technician.

Liquid damage – if water or any liquid particles made its way into the phone and it started acting differently, then you’re in trouble. It is difficult to know how much damage liquid may have caused and to what extent. Sometimes, for minor issues, removing the battery immediately and let the phone dry off for a couple of days will bring everything back to normal but there’s no guarantee. So, if you are positive that liquid entered your phone, you better have it checked immediately. Please note that liquid damage is not covered by warranty.

Physical damage – for this, it’s actually easy to know if the impact affected the phone. If you see damage on the outside like cracked screen, bent covers, bulges and other deformities and the phone started acting weird, it is almost certain the impact has damaged some of the components inside. For outside components, you can easily tell which one needs replacement, however, the components inside are difficult to determine. Therefore, you need help from a technician.

Assuming your phone just refused to charge for no apparent reason, this is what you’re going to do…

How To Fix Samsung Galaxy S3 Not Charging

Step 1: Verify your charge is working

There are different ways to do it. You can try charging other devices with it and if they respond, it means it’s still giving out current.

You may also try using a different charger (if possible) with your phone to know if it will charge. If so, then it’s almost certain your charger is busted or damaged at some point.

If other device won’t charge using your charger or if your phone won’t charge with a different one and both chargers were plugged in from the same source, try a different outlet. If still nothing, then proceed to the next step.

Step 2: Verify the USB cable/cord is good

You may plug the USB cable to other chargers just to see if the phone would respond if it could detect current being pushed to the battery. You can also use a computer to know if the phone gets detected by the computer (if it’s still on) or somehow charges.

Of course, the other methods in knowing if it’s a cable problem is to use a different cable and see if your Galaxy S3 charges. If not, then it probably not the cable that has a problem. So, proceed to the next step.

Step 3: Check if the USB/Utility port is loose

If the port is loose, the phone may charge if you hold the cable while charging. Some users reported they wiggled the cable around and their device detected current being pushed in but only for a few seconds.

You will actually know if the charging port is loose by pushing the end of the cable to the left or right, up or down. There’s a play regardless of what direction you pushed the cable to, then there’s a possibility it’s a loose port.

We technicians will immediately check if the problem is with the port’s connection to the board because if it is, it can be fixed by re-soldering the connectors. But then again, you need help from a technician if this is really the problem with your phone.

Assuming the USB port is fine but the phone still won’t charge, proceed to the next step.

Step 4: Verify the battery is fine

You must begin this procedure by checking if the battery is properly mounted on the phone. Just open the back cover, remove the battery and try doing these…

  1. While the battery is out, check the connectors on the phone to see if they properly aligned. If one of them isn’t touching the connector on the battery, the phone won’t power up and won’t charge.
  2. Get a dry cloth and clean the connectors on the battery as corrosions often interfere with the current.
  3. Try spinning the battery on the table to know if there are bulges. If it spins, then it’s time you bought a new battery.
  4. Assuming the phone’s connectors are fine and the battery’s are clean and that there are no bulges, place the battery back in and attempt to charge the phone.
  5. If the charging signs won’t show (i.e. charging icon and the LED indicator), then try a different battery.

There’s no guarantee it’s a battery problem so if you could just borrow from a friend, that’s better so you won’t have to spend on a new battery.

Step 5: Send the phone in for repair

If you have tried a different battery and the phone still won’t charge, then seek help from someone who can do further testing. There could some issues with the hardware inside. If you noticed the device getting hotter prior to the problem, then it may have overheated affecting some components.

However, if the phone got damp or wet, the charging or power IC may have been busted. This is the worst case scenario as you will be required to buy a new motherboard for the phone to work again. Of course, buying a new phone is more practical than having the motherboard replaced.

Having problems with your phone that’s not charging?

We can help you troubleshoot. We already published troubleshooting guides for the following devices:


  1. Hi,
    My Galaxy S3 won’t charge tonight and I have replaced the battery once although it may have been a while ago. I tried three charger cords so I don’t think that is the problem. What is the life expectancy of a battery for this phone?

    Thanks for any ideas you may have.


  2. My Galaxy S3 isn’t charging and I have tried three different cords to see if it was the connection but I guess not. I have replaced the battery once and that fixed the problem one time. But I don’t think the battery should need to be replaced too often. What is common life expectancy of a battery for this phone? I really don’t want a new phone if it is just a battery problem again.

    Thanks for listening and for any ideas you may have.

  3. Charlie, I took your advice and couldn’t be more pleased. Thanks so much for the info–very pleased indeed! I am able to charge my Galaxy S3 with the original S3 back, my Otterbox Defender’s hard plastic case AND it’s protective rubber outer case quickly and easily. I did find that the phone made better contact with the Choetech charger if I lay the phone face-down on the countertop, and flip the charger upside down and place it on the back of the phone. Get 100% unwavering contact, as the weight of the charger helps press down on the contact points inside the phone.

    I owe you a debt of gratitude, Charlie!

  4. Here’s what I did. Buy a DigiYes wireless charging receiver for a Galaxy S3, ($10 on Amazon). This is just a small card that you stick on the back of your existing battery so your phone will charge wirelessly. This stays on your battery inside your phones case. I also bought a Choetech T513 3 coil Qi wireless charging pad, ($20 on Amazon). This is a charger for newer phones, pads, etc. that are manufactured with wireless charging capability. This set up allows my phone to charge right through a thick Otterbox case with no problem. There are plenty of other receivers and chargers out there but you do get what you pay for so don’t go too cheap. Plus you’ll be able to use the charging pad with future gizmos you buy since the wireless charging capability is already built into many new things.

  5. My Galaxy s3 is not charging. Took it to get new battery and was told battery fine but my USB port was loose. Bought a charger for battery but leaves me with no phone while charging and my work relies on it. My phone is 2 years old and was told it was a good phone and should last a while. Any suggestions? Can not afford to pay $300 plus every couple years for a phone…..need help!

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