Samsung Galaxy S3 takes a long time to charge, what should I do? Why is my phone charging slowly? What can be done in this case? The main reasons leading to problems with charging Samsung Galaxy are considered

Many owners of Samsung smartphones are faced with incorrect charging of their devices. Some users cannot achieve a 100% charge. Others complain that this process it runs very slowly or the gadget does not react at all when the power supply is connected to it. There may be several reasons for this, and not all of them can be eliminated at home. Let's look at why a Samsung mobile phone won't charge and what to do in a specific case.

Possible reasons for Android not charging correctly

In all smartphones, the power supply circuit is the most unreliable module. This is mainly due to the fact that the charging connectors are often subject to mechanical stress, and the battery has a limited service life.

The main reasons leading to problems with charging Samsung Galaxy are:

• mechanical damage to the power cable;
• failure of the power supply or its non-compliance with the required characteristics;
• battery failure;
• the micro USB connector on the phone is damaged or clogged;
• power controller burnout;
• incorrect battery calibration;
• software malfunction.

We will try to understand each of the above malfunctions in more detail and, if possible, eliminate it on our own.

Mechanical damage to the Samsung Galaxy power supply system

The power supply circuit of any smartphone can be divided into several components:

• charger (adapter);
• power cable;
• micro USB connector;
• battery;
• microcontroller.

In this list, the most vulnerable element is the cable connecting the gadget to the charger. This is due to the fact that during operation it is subject to frequent twisting and bending, which negatively affects its service life. Therefore, first of all, check its functionality. To do this, take a known-good cord and try to charge your phone with it. If everything is fine, replace the cable with a new one. Fortunately, it is inexpensive.

Due to prolonged use or severe voltage fluctuations, the power adapter may also fail. Checking it also involves connecting a third-party charger to the smartphone. If the unit is damaged, buy a new product from a specialized store.

When choosing a new adapter, pay special attention to its output power(by how many amps it puts out). If replacing a two-amp charger If you get a low-power unit, the process of fully charging your Samsung will take a very long time.

The phone may not charge well if the micro USB connector is loose or dirty. Try the following:

1. Turn off your smartphone and remove the battery from it.
2. Hold the device up to a bright light and check the output connector for dirt, dust and oxidation. If necessary, clean it with a brush, soft cloth and alcohol.
3. Check if the micro USB input is wobbly. It is quite possible that it will need to be re-soldered.
4. Turn on the gadget and connect a known-good power supply to it.
5. Shake the plug in different directions every 1-2 seconds. At the same time, carefully monitor the charging indicator. If it comes to life in one of the positions, the cause of the malfunction lies in poor contact between the power cord and the micro USB connector.

Mobile phone batteries have a limited lifespan. Therefore, if you use Samsung for a long time, it is quite possible that it is the source of all the problems. To check the functionality of the battery, you must:

If electrical parameters the batteries do not meet the standards or they are appearance is in doubt, try replacing the battery with a new one.

Samsung may not charge if the power controller is faulty. It is quite difficult to check its performance at home. So it is better to entrust this to specialists.

Android software problems

Charging your phone incorrectly may cause problems with the phone. software. Due to such problems, the microcontroller will begin to incorrectly interpret information about the battery status. As a result, it will not charge completely or will not respond at all to the connected power adapter.

One of these failures is a violation of battery calibration. You can eliminate it as follows:

After completing these steps, the old batterystats.bin file will be deleted and a new one will be written in its place. All you have to do is completely discharge the Samsung, and then recharge it to 100%.

Not charging samsung phone

When faced with the problem of recharging your smartphone, a number of problems can be solved yourself. After conducting an inspection and a little diagnostics, you can easily rule out or eliminate the most obvious and common reasons why your Samsung phone Samsung Galaxy, A3, S6, S4, S3 and other models stopped charging.

The most common reasons when a Samsung smartphone does not charge

• deep discharge;
• cord and power supply;
• connectors;
• accumulator battery;
• software problems;
• mechanical damage;
• moisture ingress.

Let's look in more detail at each possible area that could cause such a defect to appear.

Deep battery discharge

If you do not follow the manufacturer's recommended discharge and recharge mode, then you will not receive power from the electrical network, the gadget could get a deep battery discharge. This happens when the voltage drops to the required nominal value, which is indicated directly on the battery itself in Volts.

And now, when connected to a PC or charging, devices cannot recognize your smartphone. At home, it will help to leave the gadget for a long time (several hours) connected to the charger. Or use a frog attachment.

In most cases, this helps restore the battery capacity, or a Samsung phone repair shop will help you, where they will use laboratory block supply with the required power.

Charger

Check charging on another device, connect the cord to the PC. It is necessary to eliminate the problem of recharging in the cord and power supply.

Inspect the cord and power supply carefully. Visually they should not have any damage. The cord must be smooth, without bends, kinks, or fractures. The insulation must be along the entire length.

If you find any damage, be sure to replace the cord or unit with a new one. The use of such components is fraught with short circuits and failure of more serious and expensive phone components.

Connector problem

The next step is to inspect the charger connector. Obvious mechanical damage will immediately indicate the need for replacement.

The problem may also be poor conductivity due to contamination (dust, corrosion from moisture). Convenient to use a toothbrush. Gently clean the connector and try connecting the charger again.

Accumulator battery

It is likely that the Samsung Galaxy, A3, S6, S4, S3 and other models are not charging due to the failure of the battery itself. Battery swelling or oxidation directly indicates this. Then you need to replace it with a new one. You can do this yourself, or you can contact the service center specialists.

Software failure

Some malicious applications can cause such damage to your gadget. Regular anti-virus cleaning of the program is necessary to prevent any malfunctions in the operation of the smartphone. If you can no longer turn on the gadget because it is dead, contact a specialist for restoration work. They will reset the settings to factory settings or offer flashing.

More serious reasons why samsung smartphone stopped taking charge, they will determine it at the service center and it is best to correct the defect there. This way you will receive a guarantee for the work performed and free service if the problem recurs.

Buying an expensive smartphone these days (due to the depreciation of the dollar) is even more expensive and responsible than a year ago. Therefore, it is doubly offensive if a newly purchased phone somehow malfunctions.

I'll tell you my story related to the Samsung galaxy s3. About six months after the purchase, I began to notice that the phone was discharged very quickly - a 100% charge was enough for literally 2 hours.

And I don’t even play on my phone! Sometimes I could not touch it, but it would still discharge in an instant! And then one fine day I just charged the phone, put it next to me, and then after a couple of minutes it beeped - 15% charge! how so? I connect it to the charger, but it doesn't charge! Horrors immediately run through my head: being repaired, being without a phone for a week or more.

Okay, it occurred to me to take off the case and look at the battery. And the battery is swollen! Just to huge sizes! How has it not exploded in my hands yet? Very lucky! As a result, of course, I didn’t put the battery back, I bought a new one the next morning, and now the phone charges normally. By the way, the battery could have swelled because I left the phone on charge all night. I don't do that anymore.

But a swollen battery is only one of the reasons why the Samsung galaxy s3 does not charge. What other reasons could there be?

2. Faulty charger. We have three identical Samsungs at home and three chargers, respectively. So, we noticed that not all chargers charge the same way - some are faster, some are slower. It is important that the charger is original - non-original chargers do not charge Samsung well. And in general, we have one that not only does not charge, but also discharges the Samsung!

3. There may be problems with the cord. It's easy to check - try charging another phone using a charger (the same applies to a removable charging unit). If the charger is faulty, you will need to buy a new one.

4. Problems with the charger inlet in the phone itself. It’s also easy to check: take another charger. If several different chargers do not charge your Samsung galaxy s3, then it’s time for repairs.

As you can see, not everything is so bad in cases where the Samsung galaxy s3 does not charge - most often you can buy additional accessories like a battery or charger, for which, by the way, the warranty upon purchase lasts quite a bit - about a month, it seems.

Video review

Nowadays, many have become so accustomed to life with a smartphone that losing it for a couple of days already seems terrible! The telephone, the Internet, and all the other useful features of a smartphone have made our lives more convenient and, a little more fun. One day, my friend Samsung Galaxy S3 began to have trouble charging. Remembering the history of its appearance, I realized later that it was just a matter of the charger. Initially, the charger that was included charged it slowly, and I tried to charge it with an old charger from an LG phone: the connectors fit, it charged quickly, everything was fine. Until the charging input into the phone gradually became loose, and in order for the phone's charge indicator to appear, some effort had to be applied. Deciding that it would be easier to buy a new charger, I did just that, buying a charger for 170 rubles at the nearest kiosk. It connected fine, but it charged slowly and eventually ran out of charge (I was using my smartphone while charging). I went to the nearest service center and left the phone for diagnostics and possible repairs. As a result, this trip cost me 1000 rubles. - they said that they had soldered the input socket. I don’t know what they soldered, but the result is the same - the old charger that was charging is not visible, the new charger charges slowly. The service offered me to leave the phone with them for a couple more days for further diagnostics. I decided to solve this issue myself. To begin with, I bought a new battery (original Samsung - for 700 rubles). After searching for information on the Internet, I found a very useful article that helped me (I hope now for sure)! At least now it is clear that the reason slow charging was in the strength of the supplied current. I installed a program that shows how much mA is supplied. The original battery, as well as the new Chinese battery, showed a figure from 100 to 300 mA. There should be a value close to 1000 mA. This is why it charges slowly. As a result, I made one from two almost non-functional chargers: a USB cord for a phone - I took it from the original charger and connected it to the power supply (the one that is plugged into the outlet). As a result, it is now charging at 500-700-900 mA. Hooray!

The text I found on the forum http://mdforum.ru/showthread.php?t=11132 is below:

Everything written below is intended primarily for Samsung users Galaxy S III (international version GT-I9300) with original 2100mAh battery

First of all, you need to make sure that the battery in your phone is receiving the required current.

We install a small but useful program with the GalaxyChargingCurrent widget, in which we will only look at current max readings. For the purity of the experiment, the battery charge should be less than 90%, or even better, less than 70%. Why is this so? - The answer is at the very end under the spoiler "note". We turn on the body for charging from the original (SAMSUNG) network adapter in the outlet and look in the menu->settings->battery to see if it is charging from the network (AC), and not from (USB). Then we look at GalaxyChargingCurrent for the current max reading. Ideally, for charging from the network it should be 1000 (just 1A, as written on the adapter). But if it’s 800-900, that’s also normal. If, when charging from the network, it shows 460, then the body has decided that the charge is coming from USB.

Charging the smart phone in the off state will determine which direction to dig in (the normal charging time for the original battery is from 2 to 2.5 hours, small errors are possible).
If the smart device is turned off and charges for about 2.5 hours, and when turned on longer, it means you have problems with the “software”.
If the switched-off smart device charges for more than 3 hours, this means there is a problem with the hardware.
An old/faulty/outdated/dying battery can be charged in less than two hours (there are known cases of charging up to 100% in one hour).

Software problems and ways to fix them

Increased battery consumption may be to blame. In other words, the battery discharges faster than it charges. This can happen for several reasons.

• First reason- it’s you, and the other one is all yours... Sorry =) No matter how funny it may sound, sometimes the user himself is to blame for everything. You should not use the smart phone to its fullest while it is charging. It is not recommended to play heavy games or run power-intensive applications while charging. The more actively you use your smart phone, the longer it will take to charge. Any connection (data transfer via USB, 3G or Wifi) affects the charge duration; an active connection is even more so since it causes the battery to warm up. With an increase in temperature for every 10 degrees, the reaction rate increases by 2-4 times (van't Hoff©), in this case the process of self-discharge and current leakage in the battery increases by 2-4 times, it wears out faster, not to mention the discharge. With an active connection, the charging time may increase several times and the full charge signal will not quite correspond to the truth (temperature and charge time limitation on the part of the microcircuit). Based on this, charging while the phone is completely turned off reduces processes destructive to the battery during charging by 4-8 times and shortens the charging time itself. Conclusion: put the body on charge - forget about it until it is fully charged. Relax yourself and let him rest =)
• The second reason- “spontaneous” charge consumption by the smart phone. You seem to be doing nothing, but the charge literally melts before your eyes, your body begins to lag, it responds to your actions with a long delay, and the drawing of the interface slows down. There is also strong heating in the lower part (in the area of ​​the SIM card/flash drive) - the smart device heats up more than usual (I personally noticed heating up to 49°C). This is a sign of a power-hungry application running, possibly in the background. Or an error occurred in the application, it hung and the Android is trying to fix everything on its own, while consuming more power than usual. Try to stop all running this moment programs (for Samsung Galaxy S III - long press on HOME button calls the task manager, with which you can complete everything). If this does not help, then remove the body from charging, disconnect the battery for a couple of minutes, insert it back and connect it to the charger again. In the future, you need to figure out the culprit and disable it or configure it again.
• Third reason- frozen battery. Do not charge the battery after it has been exposed to negative temperatures, wait until it warms up to the surrounding (room) temperature and its energy properties return to their original values. When cooling, the processes inside the battery slow down. Therefore, when actively using the phone, a premature message about complete discharge is possible, although there is still a reserve. The effect is similar to high internal resistance, but is reversible. Due to the slow chemical reaction, the battery simply does not have time to supply the required amount of energy, resulting in a voltage drop. It is precisely because of the slowed down processes that charging a cooled battery will be ineffective. Moreover, it causes him some harm. You should wait until the battery reaches room temperature.

Hardware problems and solutions

• Poor contact. It is necessary to clean the USB socket in the body itself, the wire plug, and the adapter socket. If you don’t know how, don’t know how, don’t want to, are afraid - take your body to a service center or to any trustworthy phone repair office and for a nominal fee they will clean not only the USB socket, but also microphones, speakers, etc., everything they will blow it out and lubricate it (just kidding). It didn’t help - read on.
• The standard USB cable is faulty. There are two options: we crimp the microUSB plug or disassemble the microUSB plug and solder it or crimp the wires again. If you don’t know how, don’t know how, don’t want to, are afraid, a new USB cable will help you. How to choose a high-quality wire - only by scientific poking. We try different wires and compare the results in GalaxyChargingCurrent and charging time. Perhaps the original Nokia CA-101 cable will help you. We also remember that not all wires are equally useful - do not try to use wires longer than one meter. It didn’t help - read on.
• The adapter is faulty. At the moment there is only one option - we get a new one. Or, at your own risk, disassemble your adapter, repair it and share the result. Do not forget that the new adapter must meet two conditions: microUSB connector and output voltage 5V and 1000mA (=1A). 5V is mandatory, more is IMPOSSIBLE, less is possible, but no use. 1000mA(=1A) is the maximum that the body will take, if charging is 2000mA(=2A) - it’s not scary (the body will only take 1000mA(=1A)). The best option is a monolithic charger (without the possibility of disconnecting the adapter and wire). Not only the GNUSMAS adapter may be suitable, but also NOKIA, HTC and others. It didn’t help - read on.
• The battery is faulty. Signs of an old/faulty/expired/dying battery are rapid discharge and swelling. Pull the Akum out of the body and look at it in profile, for example, at the edge with the connectors. If the upper and lower planes are noticeably convex, replace it with a new one. Signs of a faulty battery are: spontaneous shutdowns Smart has more than 5% charge remaining. Before turning off, you may notice the screen flickering. Also, a working battery, charged to 100% (when the green diode lights up), cannot lose more than 1% during the boot process of the smart phone. The procedure for checking the battery for malfunction is to charge until fully charged (when the green diode lights up), disconnect from charging, turn off the smart and turn it on after a couple of minutes. If the battery has lost more than 1%, then the battery is faulty. 1% can be “lost” during the shutdown process (shutdown of applications) and during the startup process (a large number of applications in startup), in a normal situation this procedure requires much less energy and, accordingly, after turning on the smart with a working battery, the readings will remain at 100%. It didn’t help - read on.
• The phone is faulty. There are two possible answers: Krupsky and Delchev. But seriously, we repair it at a service center or at any trustworthy phone repair shop. Or we buy a new phone.

and also (it helped some):

Deleting the /data/system/batterystats.bin fileAfter deleting the named file and rebooting, the problem with charging is immediately solved. If the problem occurs again in the future, you will need to delete this file again.
Battery calibration.To solve all charging problems, you need to calibrate the battery.

Note: The charging time for all Li-ion batteries with an initial charging current of 1C (numerically equal to the nominal value of the battery capacity) averages 3 hours. Full charge is achieved when the battery voltage is equal to the upper threshold and when the charging current is reduced to a level approximately equal to 3% of the initial value. The battery remains cold during charging. As can be seen from the graph, the charging process consists of two stages. In the first (a little over an hour), the voltage increases at an almost constant initial charge current of 1C until the upper voltage threshold is first reached. At this point, the battery is charged to approximately 70% of its capacity. At the beginning of the second stage, the voltage remains almost constant and the current decreases until it reaches the above 3%. After this, the charge stops completely.http://www.ixbt.com/mobile/review/lipol.shtml

Infinity, especially for Romashka-Club.

If your phone is charging slowly, do not think that the problem is only with the charger or battery. In fact, the problem, as well as its solution, can be much simpler. What should I do if my phone is charging slowly or not charging at all? What are the causes of this problem?

Poor contact

Quite often, the metal coating inside the USB port or charger cable has poor contact. This could be either a defect caused by the manufacturer or cable wear.

What should you do if your phone is charging slowly due to poor contact? Turn off the device and remove the battery, if possible. After this, all contacts should be cleaned with something like a thin needle. This must be done very carefully and carefully. After cleaning, the battery must be replaced and reconnected. Often this method helps restore normal charging.

Dust and debris in the charging port

Many people carry their gadgets in their jeans pockets, and these pockets contain small fibers that can cause the phone to charge slowly. Masters very often encounter just such an incident. What to do if fibers or dust clog the connector? It can be brought back to normal by blowing it with compressed air from a can. You can use a powerful hair dryer with cold air or a compressor. After cleaning, the phone starts charging normally.

Cable replacement

In the entire charger, the most fragile part is the cable. Due to constant bending, it quickly breaks down, as a result of which the phone charges very slowly. What to do? The most in a simple way Diagnosis of a damaged cable is to temporarily replace it with another one. If another cable with the device works as expected, it means that the original cable is faulty. If not, then that is not the reason.

Replacing the adapter

So, the problem with the cable has been ruled out, but the phone is still charging slowly? In this case, you need to check the functionality of the charger itself. If the design allows you to pull the cable out of the adapter, then checking will be simple. It is common to encounter chargers whose ports have become very worn due to the large number of connections and disconnections of the cord.

You also need to check the adapter and cable on other phones. This will help ensure that the problem is not related to the mobile device. It would also be a good idea to check the outlet.

The main thing is safety

Do not charge the device near water or in very humid conditions, or in extremely hot conditions. There is no need to keep the device connected to electricity for too long. If it charges in just three hours, why leave it charging all night? Because of this, over time the phone charges slowly and discharges quickly.

If there is a need to replace the wire or the charger itself, then you need to be careful, since cheap copies from Chinese manufacturers can be sources of danger. Recently, there has been an increasing number of fire incidents mobile phones due to poor quality adapters.

Battery Replacement

Life time battery can't last forever. After 4-5 years of use, its capacity is lost, which is why the phone charges slowly. The more often the charging and discharging processes occur, the sooner the battery will deteriorate. If the battery stops working after just six months of use, then this is not normal. In this case, you should contact the seller.

Sometimes a defective battery can be easily identified after inspection. If it is swollen, it should be replaced immediately.

Charging from the right source

Many people charge their gadgets from computers and laptops. They have a question: why is the phone charging slowly? The computer ports are too low power. The phone will always charge much faster from a power outlet.

The problem may also lie in the fact that an adapter from a completely different device is used, for example, from a headset, which is not intended for a phone at all. You can often hear a complaint that Samsung phones charge slowly. At the same time, users charge it using an adapter from other models. But all adapters supply different output voltages.

Software update or rollback to a previous version

Updates on your phone can negatively affect your time battery life phone. This is especially true when an old model is updated to new version"Android". Newer models are usually optimized for updates.

If this is the reason, then you can try to roll back to previous version BY. To begin with, it makes sense to try resetting the settings to factory settings, as device manufacturers often recommend. This will help avoid data loss due to a different version of the operating system.

In the same way, the charging problem can be solved by installing a newer version of the software.

Turning off the phone

Often applications run in background. Their use significantly affects the duration of the charging process. For example, if a browser, Skype and something else are running, then the smartphone will take much longer to fully charge.

You can turn off the device and put it on charge. This way the process will go faster.

Calibrating the battery charge indicator

In conclusion, we need to remember about another type of problem: the indicator on the screen shows that the charge is full, but the device turns off very quickly and requires recharging. Most people think that the battery has become unusable. But often the reason lies elsewhere. This happens after flashing the phone. After completing this, calibration of the battery is necessary, which many people forget about. The bottom line is that after replacing the firmware, the phone does not know how much charge is left. Therefore, you need to calibrate the display so that the correct battery charge is indicated.