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How to Fix Fast Charging Issues with Samsung Phones

When the S6 came out, Samsung made a big deal out of its fast charging feature, boasting that in just 10 minutes, your phone will be ready to go for four hours. But there’s a reason the company sometimes puts an asterisk behind that claim. There are a lot of variables, some caveats, and some imperfections that stop many fast charging devices from living up to expectations. Some users complain fast charging has never worked on their device.

While the charging process might seem mostly physical (you plug the charger into the wall, your phone to the charger, and electricity flows through and builds a charge), there are also several software/firmware factors involved as well. That is why updates can cause issues. But then there are those who received brand new S8s that wouldn’t fast charge, which is pretty incomprehensible and unacceptable. We will tackle all of these problems.

Problem 1: After Android 6 Upgrade

If things were going okay until Marshmallow came along, try the following solutions.

Solutions:

1. Use the Original Charger & USB

Try the charger that came with the Samsung. If that charger isn’t available, or won’t work on any device, just make sure you are using a charger designed for fast charging your device.

Fast Charge

2. Enable Fast Charging

Go to Settings > Battery and turn on the Fast Charging feature. This setting may become disabled during the upgrade.

Settings Battery

3. Check Outlet

There is a fourth possible culprit besides your Samsung charger, and the Android 6 update—test another outlet to see if the one you were using might be the problem.

Socket Tester

4. Discontinue Use While Charging

Give your Samsung a chance to refuel. Optimal conditions for fast charging include a device that is powered off, or at the very least, a screen that’s turned off.

out order

5. Try a Different USB/Charger

Although stock is usually best, it could be the problem. See if using a different USB cable or charger from the same or similar device works. Try each alternative independently. If neither one works, at least you know the issue is truly your Samsung device/software.

6. Update

You can always check for and apply updates by going to Settings > About device > System Updates, and then following on-screen instructions. If the initial update caused the issue, subsequent releases may fix it.

Android Update

7. Check Position/Remove Case

Make sure the Samsung is centered on its charger and remove any possible barriers.

No Case

Problem 2: After Android Nougat Update

Solutions:

1. Enable Fast Charging

Same story; different update. Go to Settings > Battery and turn on the Fast Charging feature. This setting may become disabled during the upgrade.

2. Wipe Cache Partition

See previous. When the Samsung logo displays, release only the Power key. When the Android logo appears, release the remaining keys. Use the Volume Down key to navigate to Wipe Cache Partition, and the Power key to select it.

3. Check Outlet

Test another outlet to see if the one you were using might be the problem.

Bad Outlet

4. Turn Off Screen/Phone

Fast charging can’t even be used when the screen is on, and will work better when you turn your phone off altogether. This is an easy to fix fast charging issues with Samsung phones.

Power Off

5. Try Alternate Cable

There have been reports of faulty USB cables, so your problem might even be a hardware issue.

Samsung Cable

6. Check Physical Connections

Make sure the USB cable is plugged in completely to the charger, and the wall charger securely to the wall outlet.

damaged USB

7. Get Warranty Replacement

If your device is under warranty, or even if it isn’t, see what Samsung or your carrier will do to help you.

Problem 3: Brand New Samsung Not Fast Charging

This is the epitome of frustrating.

Solutions:

1. Factory Reset

First, backup your Samsung to retain any changes you might have made. If you’ve made none, skip this step. To backup and reset all in one, go to Settings > Backup & reset. Tap on Backup my data. Then go to Factory data reset, Reset my Device, and Erase Everything.

Factory Reset3

2. Ensure Connections are Secure

Make sure the charger fits snugly to the charging port on the device.

3. Get a Replacement

Seriously, this is a new phone. You shouldn’t have to deal with this.

4. Switch Off Samsung/Use Airplane Mode

Fast charging works best when the device is turned off, or at the very least, in Airplane Mode.

Airplane Mode

Problem 4: Fast Charging Only Works Sometimes

If your Samsung is capable, but doesn’t always fast charge, try these steps.

Solutions:

1. Switch Screen/Phone Off

You can’t expect your device to fast charge while you are using it. Let it rest. It should, however, still slow charge.

2. Turn Off Features

Turn off those features that drain your phone of charge when you want the opposite. We’re talking about Wi-Fi, mobile data, Bluetooth, and GPS to name a few.

3. Flash Stock Firmware

Custom ROMs can be awesome, but they aren’t always conducive to certain features—like fast charging. Flashing even stock firmware isn’t without risk, however, so backup your data first. You can use programs like Odin or Smart Switch, depending on your device and level of comfort. We have many, many articles about how to flash firmware on our site, and most likely we have such an article for your device in particular if you search for it.

Odin Start

4. Inspect Connections

Make sure connections aren’t damaged, and that they attach firmly.

5. Use Original Charger/Certified Fast Charger

If your Samsung works fine with an alternate fast charger, the issue is with your charger.

Problem 5: Only Cable Charges/Slow Charges

Normal charging is way too slow when you live on your phone. There have been reports of cable charging taking 5-6 hours.

Solutions:

1. Check Charger/Phone Alignment

Ensure the phone is in the correct position—in the center of the charger. You have to hit that sweet spot.

charger position

2. Reboot

This solution can be temporary; unfortunately, but it is easy and just might do the trick.

3. Enable Daydream

Go to Settings > Display and tap on Daydream. Choose your Daydream visual, then select More in the top right corner. Tap on Select When to Daydream. Ensure either While Charging or Both is selected.

4. Get a New Cable

Try a different USB cable, since some of the cables shipped with these devices have been found to be faulty.

Problem 6: Wireless Charging Pauses

Solutions:

1. Turn Off Some Features

Use the Smart Manager or manually shut off features like Wi-Fi, GPS, NFC, etc. that use a large amount of charge. One way to fix fast charging issues with Samsung phones is to temporarily eliminate those features that are defeating your purpose.

Smart Manager

2. Remove Travel Adapter

Some have found a correlation between the travel adapter that came with the charger and this problem.

3. Wipe Cache/Master Reset

Try wiping the system cache first before you resort to a factory reset.

Wipe Data

4. Drain Battery Before Charging

Let the Samsung’s charge drop to a maximum of 40% before charging.

Empty Battery

5. Contact Samsung/Technical Support

Have your device checked by Samsung and/or a qualified technician.

6. Toggle Fast Charging Setting

Go to Settings > Battery > Fast Charging and toggle the switch.

Problem 7: Must Plug/Unplug First

Although simple, it gets tedious having to plug and unplug the charger in order to get it to work, and is an indication that maybe things aren’t as they should be.

Solutions:

1. Clean Charging Port

Use a can of compressed air if necessary.

Canned air

2. Check Connections

Make sure the connection threads aren’t damaged, missing, or corroded.

3. Give Samsung Service a Visit

Have them check your microUSB port.

Samsung Store

4. Turn Off Display/Switch Off Phone

It’s best to turn the device off to fast charge, but at minimum you should shut the screen off.

5. Try a Different Charger

Use a different adaptive charger.

6. Replace USB Cord

Many stock USB cables have been prone to damage.

7. Factory Reset

This is to eliminate any potential software-related issue with your Samsung.

Factory Reset

Must Read: How to Fix Samsung Wireless Chargers that are Not Working

Problem 8: If All Else Fails

The solutions for each problem above aren’t mutually exclusive; solutions listed under a different problem may still help your Samsung, so be sure to check them all out. However, if you still can’t get it to work, try these steps also.

Solutions:

1. Safe Mode

Rule out whether any third-party app is misbehaving and causing problems with fast charging. To access Safe Mode, power down your phone completely. Long-press the Power key and release when you see the Samsung logo, but immediately long-press the Volume Down key. The device will restart. You should now see Safe Mode to the lower left of your screen. This temporarily returns your Samsung back to its original state, sans any third-party apps, so that you can use the process of elimination to determine which app might be causing the issue.

Safe Mode

2. Plug into Socket

Insert your charger directly into a wall outlet, and avoid using your PC or an extension cord.

Direct Plugin

3. Unplug and Plug Again

Even though it’s annoying, some fast charging may be better than none. Unplug the USB and plug it back in again.

4. Check Number of Pins

Verify that the connector end of your charging cable has five pins; not four. The connector with four pins doesn’t belong to the fast charging cable.

5. Use a Shorter Cable

The longer the cable, the more resistance the electricity encounters as it passes through. Try a cable that is high gauge instead.

Conclusion

So while not being able to use fast charging is definitely a first-world problem, but it’s still annoying. Hopefully your slow-charging suffering has come to an end. Have you found your own fix fast charging issues with Samsung phones that isn’t listed here? If so, let us know.

If you have a serious problem, especially involving hardware, the best solution might be to contact Samsung support or the retailer for your Android.

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