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How to troubleshoot Samsung Galaxy S7 slow charging issue

With its fast charging feature, the #Samsung Galaxy S7 (#GalaxyS7) is expected to fully-charge its battery quicker than usual that’s why many owners are complaining about slow charging issues when they notice the phone is charging at a normal pace.

By default, the fast charging feature is enabled on the phone but users can actually disable both wired and wireless fast charging options. But we received reports that some owners encountered issues like the phone isn’t fast charging while others said theirs are simply slow charging. Let’s try to take a look at this issue a little deeper to shed some light on the questions that’s in the minds of the owners.

Galaxy-S7-slow-charging-issue

Before going any further, here are a couple of problems we received from our readers that best explain the slow charging issue with the Galaxy S7:

My phone just takes too long to charge and I know it as a fact because the first few days I could fully-charge it in less than an hour. Now, it takes 3 to 4 hours of being plugged in before it reaches 90%. Did I get a bad unit or the battery needs replacement already? It is the new Galaxy S7, which I purchased brand new. Can you guys provide me some instructions on how to fix this? Thanks.

My Galaxy S7 isn’t fast charging and it worries me. I tried using the charger with a cord and I also tried the wireless but it’s not fast charging like it was before. Did I do something wrong? Is it a problem with the phone? Tried researching online and there are a lot of owners that also experience this problem so I’m kinda worried about it. Can you guys please help me.

If you have other issues with your phone, visit our troubleshooting page and find problems that are similar to yours. You may use the solutions we provided. If they don’t work or if you need further assistance, do not hesitate to contact us by completing this questionnaire.

Step-by-step Troubleshooting

There are problems we cannot fix on our own. The purpose of this troubleshooting guide is to determine whether the issue with your phone is minor and can be fixed by doing the basic troubleshooting procedures. Let’s try to rule out one possibility after another until we can square out what the problem is.

Step 1: Find out if your apps have something to do with the slow charging issue

There are two general categories for apps, pre-installed and third-party. Any of these apps can cause issues like this and while we can’t pinpoint immediately which one is the culprit or if they have something to do with it, we need to isolate the problem.

There have been a lot of reports suggesting apps cause slow charging problems because the more apps running in the background, the faster the battery drains. In this case, the apps drain the battery quicker than the phone can take in so even if you plug in the device, it will still take forever to fully-charge its battery.

Going back to isolating the problem, you need to boot your Galaxy S7 in safe mode:

  1. Press and hold the Power key.
  2. As soon as you can see the ‘Samsung Galaxy S7’ on the screen, release the Power key and immediately hold the Volume Down key.
  3. Continue holding the Volume Down button until the device finishes rebooting.
  4. You may release it when you can see ‘Safe mode’ in the bottom left corner of the screen.

You may have read something about viewing the Recent Apps screen and close all apps out. The procedure above does the same trick in one go, in fact, it temporarily disables all third-party apps leaving pre-installed ones running.

If the problem was caused by some third-party apps, then the device should charge (even fast-charge) properly in safe mode. So, while the device is in this state, plug it in to charge and see how fast it can replenish its battery. Since there are only a handful of apps running, there should be a noticeable difference in charging time.

However, if the charging is still slow, then at least one possibility has been ruled out. So, continue your troubleshooting.

Step 2: Turn off your phone and plug it in to charge

This step will help us determine whether the phone charges normally when there’s nothing running in the background. Assuming the first step was a failure or the phone still charged slowly, we are yet to determine whether the pre-installed apps have something to do with it or the firmware, the battery or if it’s a hardware issue.

If the problem was just an app or two or a firmware glitch, the phone should be able to charge normally when it’s off. It may even fast-charge considering the screen is off and that there’s a little chance the device will heat up.

In case the Galaxy S7 still charges slowly when it’s turned off, not charging at all or heats up while it’s plugged in, it’s most likely a hardware problem and as early as now, you should consult a technician immediately or you can bring the phone back to the store especially if it’s still a few days old so it can be replaced.

On the other hand, if your phone just charges fine when switched off, then it must be just a firmware issue and there’s a couple of things you can do or try to fix the problem. Proceed to the next step.

Step 3: Try deleting the system cache and charge your phone again

Others would suggest doing the system dump but I think this procedure can fix the problem especially if it occurred just recently and without apparent reason.

There have been reports of slow charging issues that were caused by minor or major firmware updates, unsuccessful app updates, and corruption of certain system caches.

Wiping all the contents of the cache partition is the best thing you can do at this stage, so follow these step:

  1. Turn off your Samsung Galaxy S7.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

After wiping off the cache partition, plug your phone again and see if it charges fine this time. If not, there’s another procedure you should try below.

Step 4: Bring the phone back to its factory default settings and try charging it again

In other words, reset the phone. You don’t have much of an option right now and considering the problem just occurred without apparent reason, there’s a chance something must have gone wrong with some of the data. You’ve already cleared the system cache, so this time, try deleting all the data but of course, make sure you backup your important files, music, videos, photos. If you have a microSD card, transfer them in and remove the SD card. Then, remove your Google account and disable the screen lock so as not to trip the anti-theft feature and then follow these steps:

  1. Turn off your Samsung Galaxy S7.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.

NOTE: It doesn’t matter how long you press and hold the Home and Volume Up keys, it won’t affect the phone but by the time you press and hold the Power key, that’s when the phone starts to respond.

  1. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  2. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.

NOTE: The “Installing system update” message may show on the screen for several seconds before displaying the Android system recovery menu. This is just the first phase of the entire process.

  1. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  2. Once highlighted, you may press the Power key to select it.
  3. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  4. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  5. The phone will now reboot longer than usual.

This is the last resort and it’s expected that a problem like yours will be fixed by doing this procedure, if not, then it’s time to visit a technician or return the phone.

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We are always open to your problems, questions and suggestions, so feel free to contact us by filling up this form. This is a free service we offer and we won’t charge you a penny for it. But please note that we receive hundreds of emails every day and it’s impossible for us to respond to every single one of them. But rest assured we read every message we receive. For those whom we’ve helped, please spread the word by sharing our posts to your friends or by simply liking our Facebook and Google+ page or follow us on Twitter.

What to do about your Samsung Galaxy A3 that charges slowly? [Troubleshooting Guide]

One of the strong sides of the new Samsung Galaxy A3 smartphone is its capability to recharge fast. Based on prior tests on the battery life and charging time, it turns out that the Galaxy A3 does not necessarily require Samsung’s powerful Adaptive Fast Charger wall plug because it is capable of fully charging the battery in a little less than 2 hours. That is even faster than the Google Pixel device.

Nonetheless, not all users have the same positive charging experience as some people also claimed that it takes forever to fully charge their Galaxy A3. What causes this difference and how is it possible for other people to have the same device completely charge faster than others? This is the main question that is going to be addressed in this post. Read on to find out what causes your Samsung Galaxy A3 to charge slowly and what to do as remedy.

Before we proceed, if you have other concerns with your phone, make sure you visit our Galaxy A3 troubleshooting page for we have already addressed many of the common issues with this device. Find issues that are related or similar to yours and use the solutions we suggested. If you need more help from us, fill up our Android issues questionnaire and hit submit to contact us.

Why is your Galaxy A3 taking so long to fully charge?

Aside from the charger, adapter, charging port and battery, you also have to consider the possibility of a software glitch that is affecting your phone’s overall functions, including the program or system responsible for charging.  In addition, bad charging habits like using the device or playing mobile games while charging are also among the reasons why it would take forever for your phone to fully charge. Let us further elucidate how each of these factors is tied to an issue on slow charging on your Galaxy A3.

  • Charging cable. USB cable or charging cables are typically built to be less robust than the charging port.  With all the wear and tear your charging cable goes through in the course of daily use, it is expected to beat up eventually. That’s when charging performance starts to depreciate. However, this is likely not the case when it comes to new devices given that everything that comes with the device including the charging cable is expected to be at its most robust state unless it has factory defect. A bad adapter can also be the culprit. Often times the adapter gets busted due to a power surge or hard impact. Any of these can cause trauma to your adapter, making it no longer capable of charging full-speed.
  • Power source. Another possible reason as to why your Galaxy A3 battery takes so long to get fully charge is a weak power source you are using. This is usually the culprit when you charge your phone using a computer, power bank, or other power sources other than wall outlets. The same thing can happen when charging your phone on any damaged USB port. As much as possible, plug your charger into a dedicated wall charger that supplies the right amount of power (energy output) for your phone.
  • Bad battery. Although it sounds so bizarre for a new device to have a bad battery, it can happen. In fact, there have been many instances when manufacturers issued recalls for certain batches of batteries or devices (with built-in batteries) due to some flaws.
  • Software glitch. Most people usually failed to consider this among the possible triggers. Note that your phone charges when triggered by the charging system to do so. Mobile devices are created with several programs to carry out specific purpose. That being said, there is a program responsible for charging and it’s referred to as charging system on your Galaxy A3. Its main task is to monitor that battery status or percentage reading. When it detects that the battery percentage is already 0, it triggers the phone to die so you’ll need to recharge. When the charging system or program detects that the battery meter reads a higher percentage level or goes back above a certain threshold, it will then trigger the device to power on and resume operations. Among the factors that can ruin charging system operations are bad updates, including major updates to Android that contain bugs. Poor charging habits like charging the device when it’s above 50 percent, leaving the device connected to the charger for a long period of time even after the battery is fully charged, as well as leaving the device dead for so long prior to charging.

How to speed up charging on your Galaxy A3?

Since the main issue tackled in here is on slow charging, our goal is therefore to make your phone charge faster as it is supposed to. As much as possible, be sure to eliminate the possibility of the problem being caused by charging equipment.

Consider the following options, recommendations and workarounds.

First things to do and check:

  • Try alternate charging cords or AC adapter. If you haven’t already, try to use alternate charging cords or AC adapters. Doing so will help you rule the possibility of a bad cable or faulty AC adapters being the culprit. Also rule out the charging port on the phone. If the charging cord snaps into place with an audible click and fits snugly without any room for wiggling, the charging cord is not the problem.
  • Remove casing (if there’s any). If you’re using a case as protection from possible trauma, try to remove the case then charge your phone without it. Some cases especially from third-party manufacturers may possibly intervene the charging port, causing unstable contact or connection between the charging cable and charging port.
  • Try a different power source. If you are using a computer to charge your Galaxy A3 and noticed that it is charging very very slowly, then try to charge it into a wall outlet instead. Or it could be the other way around. Other charging ports you can try are car chargers and power banks.
  • Don’t use your phone while charging (if possible turn it off). This one is self-explanatory. Apparently, this is a bad charging habit that you need to rid of. Aside from letting your device to speed up charging, doing so is also for your safety. You may have heard of many cases when a device exploded as users were found to continue using the device while charging. Also refrain from installing any apps for 24 hours to make sure that the problem is resolved.

After you’ve done the prior recommendations and still couldn’t get your Galaxy A3 to charge faster, you may take your chances with these subsequent workarounds.

Examine battery usage

You can check your phone settings and then review the battery usage details. To get there, navigate to the Settings-> then Battery menu. In this menu, you will see a graph depicting the rate of charge. It should be a relatively straight line that is going upwards. Below the graph, you will see a list containing apps or services along with the amount of power they consumed. If the graph shows apps or services that are using significant power than the display, the problem is more likely software-related. To possibly remedy this problem, try to uninstall the faulty app. If that doesn’t work, consider the next workaround.

Factory reset

Yes, it’s a tedious process but might be the only thing you need to do in order to rectify any software glitch that is slowing down your phone’s charging capability. However, the final decision would still be on you. If you’re willing and decided to give it a shot, then backup all critical information stored on your device then proceed. Here’s how a factory reset or master reset is done on your Samsung Galaxy A3:

  1. Tap Apps from the Home screen.
  2. Tap Settings to open the Settings app.
  3. Tap Backup and reset under Personal section.
  4. Scroll down then tap Factory data reset.
  5. Read and review the details then tap Reset device to continue.
  6. Tap Erase everything to confirm action.

Wait until your phone completely resets to factory defaults. Then try to charge it again. Once it is fully charged, you can proceed with restoring data from your Samsung account.

Reset and calibrate the charging system.

Calibrating the battery can help it optimized and improve charging functions. If you haven’t already and you wish to try it, follow these steps to calibrate your Galaxy A3’s charging system:

  1. Connect your phone to the charger and plug into the power source.
  2. While it’s connected to the charger, hold the Power button down for about 1 minute or when the Samsung logo animation starts flashing.
  3. When the screen is black, let go of the Power button.
  4. The phone should now be turned off. If it turns back on, turn it off.
  5. When you see that it starts to charge and the battery meter may seem a bit odd, do not worry because it’s part of the charging system’s resetting and recalibrating process.
  6. At this point, your device is already able to re-determine the maximum capacity of the battery. Finally, turn on your device and then use it as you normally do.

Seek more help

If you find no luck on any of the prior recommendations and workarounds or your Samsung Galaxy A3 is still charging very slow, then at this point you should already consider escalating the problem to Samsung Support for further assistance and recommendations. If your device is still under warranty, then you should consider availing for warranty instead. You can decide on which type of warranty to avail based on the assessment result.

Posts you may also be interested in reading:

Samsung Galaxy Note 5 charging issues and power problems after Android 6 Marshmallow update

In this post, I tackled some of the most common charging and power issues with the #Samsung Galaxy Note 5 (#GalaxyNote5) that occurred after the recent Marshmallow (#AndroidM) update. Continue reading to know more about and learn how to fix or work around them just in case you’d encounter one the future. Here’s the list of the topics for your reference…

  1. Doesn’t charge when it’s on, charges slowly when turned off
  2. Fast charging feature doesn’t work all the time
  3. Note 5 charges only when turned off
  4. Note 5 screen went black after falling on the ground
  5. Email syncs continuously in the Note 5
  6. Note 5 screen becomes unresponsive several times a day

Galaxy-Note-5-fast-charging-problems

Should you have other issues, visit the troubleshooting page we built for the Note 5. Find problems that are similar to yours and use the solutions we suggested. If they don’t work and you need further assistance, fill up this questionnaire and hit submit to contact us.


Note 5 doesn’t charge when it’s on, charges slowly when turned off

Problem: My phone doesn’t charge with power on. With power off it shows slowly coming on and off a battery icon with a short vibration and does charge  the battery. The icon keeps showing up even when the battery is fully charged.

Troubleshooting: Here are the possibilities:

  • Charger is defective
  • USB port is loose
  • Utility port issue

If the power adapter or the charger itself is the issue, buying a new one is your best bet. To know if it’s really the one that has a problem, try using a different charger. If it works, then our suspicion is confirmed.

When plugged in, try to hold on the cable and see if there’s a certain direction that you could make the device charge continuously. If the problem still persists and if the cable fits right in to the utility port, then the problem might be the port itself. In this case, you need a technician to check it for you.

Note 5 fast charging feature doesn’t work all the time

Problem: Sometimes when the phone is plugged in, it does not recognize fast charger. Occasionally I have to unplug and replug the phone in for fast charging to be recognized. Regardless of battery percentage, if fast charging is recognized, the battery charges faster.

Troubleshooting: When it comes to fast charging capability of the Note 5, there’s not much we can do about it because there’s no ON/OFF switch for this feature. There’s no problem here. When the phone doesn’t fast-charge, just make sure the screen is off and re-plug it. That should do it.

Related Problem: Why do I constantly have to plug and unplug my note 5 several times to get fast charge to start? It is the original wall charger, and no matter what plug I use, I have to plug and unplug the cord several times for it to say fast charge. Otherwise it just says cable charge.

Related Problem: When I connect my Note 5 to charge, it doesn’t always fast charge. I sometimes have to connect and reconnect 3 or more times for the fast charging to work. I’m using the original Samsung charger that came with my new phone about 6 months ago. Please help I feel like I’m doing more harm to my phone with connecting and reconnecting so many times. Thank you!

Note 5 charges only when turned off

Problem: Got my phone about three weeks ago. It has been great to me until just now. My phone won’t charge on any power source. I’ve tried changing cords and blocks. It will start and stop charging only if the phone is off. If the phone is on it won’t charge at all. Please help asap!

Troubleshooting: At least, it charges. That’s a relief because we know that it’s not a hardware issue. More often, if this problem occurs, it means that there’s a ton of apps and services running in the background that use the battery. Close them and it should start charging normally again. The problem is, we don’t know for sure what those apps are and disabling them one by one will take a lot of your time. So, you have two options here; you can either boot your phone in safe mode if you charge it or you can reset it now and install necessary apps.

Booting in safe mode will temporarily disable all third-party apps and if our suspicion that the issue was caused by tons of apps running in the background was true, then the Note 5 should charge fine when in safe mode.

Resetting it, however, will delete all third-party apps and services and the device should charge properly after that. You may then install necessary apps or those that you use more often to prevent having to encounter the same problem.

Note 5 screen went black after falling on the ground

Problem: It fell down from my lap to the ground now the screen is black the notification light is blue and it make a sound as it try to start but want start. Just keeps on making the sound. I tried to use the power and up volume button and low volume but it will not restart. The notification light is always on.

Suggestion: Apparently, the phone suffered a physical damage affecting the display that’s why the screen remains black even if it’s obvious the phone is on. Try pressing and holding the Volume Down and Power buttons for 20 seconds. If the screen remains black, then it’s time you consult with a technician and have it fixed or at least, checked.

Related Problem: I kept my note 5 as usual and when I see my note 5 to make a call, I found that display was showing nothing and dead except a blue LED was blinking. I have been trying to power off or on but nothing. Please help me to resolve as soon as possible.

Email syncs continuously in the Note 5

Problem: My email syncs continuously therefore the battery is dead in 2 or 3 hours so I have to go to email settings and uncheck sync then once a day turn it on to update. I didn’t use to have this problem. It’s a pain. The sync circle on the email page just continues to rotate.

Solution: Try changing the sync schedule for that account to see if that makes a difference. If not, then it’s you tried setting up your email account again. That should work.

Note 5 screen becomes unresponsive several times a day

Problem: Hi. Multiple times a day my Note 5’s screen becomes non responsive. It’ll happen only after the phone screen is off. It’ll take between 1 and 3 home button cycle off/on for it to become responsive again.  Happens about 5 times a day on average. Note 5 with us cellular, thanks for any advice.

Solution: Something triggers it and more often than not, it’s a rogue app or your phone’s performance is really poor. You can take the entire day looking for the culprit but there’s one way to make it easier–master reset. All you have to do is backup all your data and reset your phone. The issues will be fixed after that.

Connect with us

We are always open to your problems, questions and suggestions, so feel free to contact us by filling up this form. This is a free service we offer and we won’t charge you a penny for it. But please note that we receive hundreds of emails every day and it’s impossible for us to respond to every single one of them. But rest assured we read every message we receive. For those whom we’ve helped, please spread the word by sharing our posts to your friends or by simply liking our Facebook and Google+ page or follow us on Twitter.