Many owners of Samsung smartphones are faced with incorrect charging of their devices. Some users cannot achieve a charge of 100%. Others complain that this process is very slow 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 the Samsung mobile phone is not charging and what to do in a particular case.
Possible reasons for Android charging incorrectly
In all smartphones, the power circuit is the most unreliable module. This is mainly due to the fact that the connectors for charging are often subjected to mechanical stress, and the battery has a limited life.
The main reasons leading to problems with charging the Samsung Galaxy are:
- mechanical damage to the power cable;
- damage to the power supply or its mismatch with the required characteristics;
- battery failure;
- damage or clogging of the micro USB connector on the phone;
- power controller burnout;
- incorrect battery calibration;
- software malfunction.
We will try to understand each of the given malfunctions in more detail and, if possible, eliminate it on our own.
Mechanical damage to the Samsung Galaxy power system
The power supply circuit of any smartphone can be conditionally divided into several components:
- charger (adapter);
- power cable;
- micro USB connector;
In the indicated 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 subjected to frequent twisting and bending, which negatively affects its service life. Therefore, first of all, check its performance. To do this, take a known-good cord and try to charge your phone with it. If everything is normal, replace the cable with a new one. Fortunately, it is inexpensive.
When choosing a new adapter, special attention should be paid to its output power (how many amperes it gives out). If you replace a dual-ampere charger with a low-power unit, the full charge process on your Samsung will take a very long time.
The phone may charge poorly if the micro USB connector is loosened or dirty. Try the following:
- Turn off the smartphone and remove the battery from it.
- Bring the device to bright light and check the output connector for dirt, dust and oxidation. If necessary, clean it with a brush, soft rags and alcohol.
- Check if the micro USB input is swaying. It is possible that it will need to be re-soldered.
- Turn on the gadget and connect a known-good power supply to it.
- With a frequency of 1-2 seconds, shake the plug in different directions. At the same time, carefully monitor the charging indicator. If in one of the positions it came to life, the cause of the problem lies in the poor contact of the power cord and micro USB connector.
Mobile phone battery has a limited life. Therefore, with prolonged use of Samsung it is quite possible that it is he who is the source of all the problems. To check the battery’s performance, you must:
- Turn off the device and remove the battery from it (of course, if it is removable).
- Visually inspect it for bulges and other defects.
- Using a tester, observing the polarity, check the voltage at the battery terminals. It should be about 3.7V in the discharged state and 4.0-4.2V in the charged state.
If the electrical parameters of the battery are not up to standard or its appearance is in doubt, try replacing the battery with a new one.
Samsung may not charge when the power controller fails. Check its performance at home is quite difficult. So it is better to entrust it to specialists.
Android software malfunctions
Improper charging of the phone can cause malfunctions in its software. Due to such problems, the microcontroller will begin to misinterpret the battery status information. As a result of this, it will not fully charge or will not respond at all to the connected power adapter.
One of these failures is a mis-calibration of the battery. You can fix it as follows:
- Unlock the superuser profile on your smartphone. The fact is that all information about the state of the battery is stored on Samsung in the system area (file batterystats.bin). And to access it you will need Superuser rights. You can get them using KingRoot, Framaroot, UnlockRoot or another program with similar functionality.
- Download the Battery Calibration app from the Play Market.
- Run this utility and allow it to work with extended rights.
- Connect the gadget to the power adapter and charge it 100%. If it is not possible to do this using the charge indicator, click on the “Beep if charged to 100%” button. In this case, the program will independently determine the full charge and will signal you about the end of the cycle.
- Click “Battery Calibration”, thereby starting the calibration process.
After performing these steps, the old batterystats.bin file will be deleted, and a new one will be written in its place. You only need to completely discharge Samsung, and then recharge it to 100%.
There were situations when the smartphone began to charge incorrectly after its independent firmware. If the same trouble happened with you, try to roll back Android to a previous state, returning the old firmware or completing Hard Reset.