If the charging circuit of your device is working properly (it charges normally from another charger), but it does not charge from the charge you need (for example, through a cigarette lighter), you can do the following:
Replace/repair/remake the cable from the charger to the device being charged (there is no point in saving on the quality of the wire; often a shorter and thicker cable charges faster)
Replace/repair/modify the charger (a charger with a more powerful current may charge faster, instead of a charger you can use an external battery; some have more powerful outputs - about 2 Amperes, this can help if the device is completely discharged)
More details
Often the problem is just a USB cable with high resistance (for example, the wires are thin and long). Sometimes the cable may be partially broken (one core remains intact or the broken wires are attracted to each other only by insulation) in this place the resistance increases sharply.
When you try to charge with a high current, the voltage drops significantly at a high resistance and becomes insufficient for the device being charged. Such wires may be suitable for data transfer and charging low-current devices, but not for charging devices that require high current. If it is not possible to replace the wire, you can significantly shorten it or cut off the connectors from it and solder them to a wire of a larger cross-section; it probably will no longer work as an information cable.
If the device being charged is turned off (put into sleep mode), charging will go faster, or will be possible at all.
Most often, a power supply with a USB output connector is used as a memory, in which there are 4 contacts: two are 5 Volts DC and two information data + and Data -. The device being charged, for correct charging (the task is not to overload the charger, to ensure the fastest possible charge, not to use an unidentified or weak charge), tries to calculate the characteristics of the charger through the state of the Data + and Data - signals.
Accordingly, some manufacturers can install jumpers, resistors, and more complex solutions between the contacts of the USB charger connector, with the help of which the device will recognize the charger as original and charge. Without “seeing” the required states of information signals, the device will not begin to charge.
The Micro-USB connector has 5 contacts, an additional contact is most often used to recognize the fact of connecting a cable (for example, a USB OTG cable - it has a jumper between 4 (ID) and 5 contacts) and switching to master device (host) mode, in some models may affect the current consumed when charging the device.
If the rated power, voltage of the charger and other quality characteristics are suitable for charging your device, then the charger can be modified by finding the appropriate circuit.
You cannot cheat the charging circuit (or use a low-current charger in the case when the high-current device being charged does not have a charger power recognition circuit), you cannot use a low-quality cable, since there will probably be no charge anyway or it will take a long time, either the charger or the charging circuit may fail device being charged.
The maximum current drawn through the USB bus power lines must not exceed:
USB 2.0 - 500 mA;
USB 3.0 - 900 mA;
USB 3.1 up to 5A.
USB 2.0 is still the most common - by default, the device is guaranteed to consume a current of up to 100 mA, and after coordination with the host controller - up to 500 mA.
Power supplies with a USB output can usually deliver significantly more current than a USB port.
Often, to increase the current received from the computer's USB ports, a Y-type cable can be used, which allows you to receive power from two ports at once.
Ai Charger and APP Charger programs, which help charge devices faster by receiving a current of more than 500 mA from the USB port (probably will not work on every motherboard).
Quick Charge 2.0 - Qualcomm technology that uses a more powerful charger and the use of higher voltage (Quick Charge 1.0 simply meant a more powerful charger - 5 Volts / 2 Amps)
Output voltage/current: 5V/2A, 9V/2A, 12V/1.67A and 20V
Power - about 18W
Quick Charge 3.0 is a Qualcomm technology; compared to 2.0, the charging algorithms are mainly optimized; the speed has not increased significantly compared to 2.0. Quick Charge 3.0 asks the device for the required voltage, which can be anything in the range from 3.2V to 20V in 200 millivolt increments. This provides a greater selection of available voltages.
Standards:
Battery Charging v1.2 Spec and Adopters Agreement (BC1.2)
IEC 62680-2:2013 Part 2: Universal serial bus - Micro-USB cables and connectors specification, revision 1.01
IEC 62680-3:2013 Part 3: USB Battery Charging Specification, revision 1.2
After reading our article, even those who are not particularly comfortable with technology will be able to figure out a little what’s what. Simple but miraculous recommendations will make the naive - wise, and the defenseless and insecure - experienced experts in the question: “What to do if the phone does not charge?” Most likely, even people who are not technically savvy will be able to adequately answer the presumptuous “guru” from an independent workshop that the cause of the malfunction lies not in the red button or even in the fact that the beloved dog likes to play with the dangling cord of the charger. After all, everything that can be done at home will be known to you, and believe me, this is not little. Let's discard the lyrics and move from words to practice.
Why the phone does not charge: the main reasons and methods for eliminating them
As a rule, such a malfunction occurs as a result of mechanical or chemical influence. However, a software failure of the mobile device cannot be discounted. Even such a modern phenomenon as “electronic infection with malicious code” can cause problems in the power supply system of a smartphone. Nevertheless, a correctly performed diagnosis will dot all the i’s.
Is yours working properly?
If your phone stops charging, you should first visually inspect the power cord. You may find obvious signs of damage to the outer insulation of the cable. Deformation in the form of kinks and stretching should also not hide from your view. If everything is fine with the wire, and the plug has not oxidized, ask your neighbors, friends or co-worker for help, maybe one of them has exactly the same charge. Positive result - go to the store and buy a new charger, no - we move on.
As an addition: USB check
As a rule, a mobile device purchased in a store comes with a synchronization cord (DATA cable). Connect your cellular device to your computer. via USB?
Disconnect everything from your PC. No reaction? It’s a bad situation, but it’s too early to get upset; there are several other methods with which you can try to restore the “energy life” of your mobile phone.
Software failure and what the virus is capable of
Often, smartphone owners sin by installing various programs and applications that expand the capabilities of the device. Moreover, without even thinking about the “decency” of the developers and without attaching importance to the nuance that the distribution source is filled with extremely dubious content. As a result, the working firmware begins to glitch. The charge indicator may stop working altogether, and if a virus has taken root, the phone will quickly lose the battery charge that once held for two or three days. Pay attention to whether any of the wireless modules turn on spontaneously. If you find a problem, remove the program and neutralize the malicious code.
mobile device
Remember: never panic when deciding on the question “what to do if your phone won’t charge”: this can always be fixed.
In bright light (and if you have a magnifying glass, it's absolutely wonderful) inspect the inside of the nest. “Chic and shine” is a great sign! Contamination and chemical deposits in the form of oxidation require cleaning.
Remember the saying “the further into the forest, the more firewood”? So, do not try to vigorously pick at the narrow channel of the contact connector with various improvised means - you can still damage the entire system element. Caution, a thin brush and alcohol are all you need in this case.
A good solution to the question “What to do if your phone won’t charge” is a simple experiment. Insert a known-good charger into the connector of your mobile device and, without any obvious effort, shake the plug in different directions every second. The display comes to life - go to the workshop, “deaf” - read the next paragraph.
Accumulator battery
If the battery's energy reserve is completely depleted, it is likely that the autonomous battery has lost its starting impulse. In such a situation, you simply cannot do without a universal memory.
- Place the battery in the clamp and, observing the polarity, apply electricity to the plus and minus contacts.
- In just 5-10 minutes the battery can be inserted into the phone.
If everything is to no avail and a miracle does not happen, then the next stage of the “what to do if the phone does not charge” project will be a trip to the nearest workshop or service center.
Natural ending
Falling your phone and hitting it on a hard surface, even when it is shockproof “from birth,” does not lead to anything good. As they say, luck is temporary. As a result of this kind of mechanical damage, the owner of a mobile device may encounter the following problem: the phone does not charge - it is charging. Often, due to a strong impact, a mobile phone battery fails. The visually observable indication is actually just software graphics, which, in fact, work in vain. Since the battery tanks are not refilled. There are two options: either repair the power controller of the cellular device or replace the battery. In the first case, you simply cannot do without craftsmen.
Finally
Let's hope that the question of why the phone won't charge has been resolved for you today. Nevertheless, I would like to give you a few recommendations as an encouragement for your curiosity:
- Don't use too often
- Do not allow the battery to be deeply discharged to zero.
- Do not leave your phone in the heat or, conversely, in the cold.
- Install anti-virus protection on your phone (if the software allows it).
Have a nice day and successful renovation!
In this article, we will look at the main reasons why the phone does not charge via a charger, USB or computer, and also provide instructions on how to fix it.
There are several reasons:
- A glitch in the phone's operating system.
- Charger fault.
- Battery control circuit malfunction.
- Physical damage to the charging socket.
Now we will analyze the algorithms of actions for each of them.
Glitch in the smartphone operating system
This is the easiest problem to fix. In fact, in this case, the battery is charging, the system just doesn’t see it, that is, the charge percentages are not added to the screen. This could be caused either by disabling the battery indicator in the settings, or by a glitch in the system. In the case of a glitch, just restart your smartphone on Android or iOS.
Sometimes the problem may be that the charging indicator is displayed incorrectly and the phone turns off, although it shows that the battery is 100% charged, or it is not fully charged. This can be solved using , or, if calibration did not help immediately, then by flashing and then calibrating the battery.
The phone does not charge from the charger or USB
This problem will require you to spend more time diagnosing and money to solve, but it should not cause any special problems. In this case, the malfunction may be either a breakdown of the charging power supply itself, or a broken cable. You can check the functionality of the charger by taking a voltmeter and measuring the voltage at the output connector. If there is no voltage, then the charger will have to be changed, although in the case of a USB adapter, you can try changing only the cable first. It is best to buy branded chargers, but if for some reason this is not possible, then you should carefully compare the performance characteristics of the new charger with the performance characteristics of the old one and check its performance immediately upon purchase.
Battery control circuit malfunction
Modern batteries have their own control and protection circuit, and sometimes the problem may lie precisely there. Typically, problems with it are accompanied by a sudden shutdown of the device without the subsequent ability to turn it on. In this case, all that remains is to replace the battery.
Physical damage to the charging socket
You cannot fix this problem on your own; it requires contacting a service center, so we will not consider it in detail.
Afterword
And so we see that in most cases this kind of problem can be solved on your own and without special expenses, with the exception of cases of physical damage to the charging socket or when the battery is non-removable. In these cases, the problem can only be solved by contacting a service center.
Have you noticed that as soon as you connect your smartphone to a computer or laptop using a USB cable, it immediately starts charging? This is how it should be, because the PC in this case also plays the role of a charger. Of course, the charging speed will not be as high as from the network, but the smartphone will still charge. Therefore, when, after connecting to a PC or laptop, the device does not charge, this raises questions: what happened and what to do?
Software glitch
This implies a glitch in the smartphone software. What should be done? Of course, reboot it. Press and hold the Power key for a second or two until a menu appears on the screen.
From the menu, select Restart. Or “Reboot” - the name of this item may vary on different firmware.
After rebooting, check if the smartphone is charging.
Should I restart my computer? It's unlikely that this will help, but you can try.
The cable is damaged
There may be insufficient charging current. What is this connected with? For example, with a cable. If you have pets, they may have decided to taste the USB cable, so it should be carefully inspected for damage. Even if the damage is minor, the cable may transmit information but not charge the smartphone.
Also, if you bought a new cable, the thickness of the cable may indicate the cause of the problem - if it is too thin, it may not charge the smartphone.
There is not enough power from the USB port
If you charge your smartphone from a USB port on the front of your PC, try charging your device from the ports on the back. At the front, there is often a lack of energy.
It could also be a specific USB port - just use a different one.
Don't use an extension cord
USB 2.0 produces a maximum of 500 mA. This is enough to charge your smartphone, albeit quite slowly. Some users also use USB extension cables, which significantly reduce this figure. As a result, the smartphone charges either very slowly or does not charge at all.
Problem with smartphone connector
Determining that the problem is related specifically to the phone connector is not so difficult - just connect it to a charger from the network. If in this case the device does not charge, and the cable is definitely working, then the problem is probably in the connector.
What can the user do? Perhaps just clean the contacts with an eraser - do it carefully. And if it doesn’t help, the connector is probably dead and needs to be replaced at a service center.
Sleeping mode
If you are trying to charge your smartphone from a laptop or PC that is in sleep mode, power may not be supplied. To charge, wake up your laptop or computer from sleep mode.
Motherboard or Component Settings
There is another option - the problem is the motherboard or, for example, BIOS settings that do not allow charging the smartphone. However, in this case, the smartphone will not be charged from the PC or laptop initially.
Rapid battery drain
It also happens that the device discharges faster than it charges, hence the problem. In this case, you need to understand why the rapid discharge occurs.
Often an application is to blame.
Actually, this problem is very rare. As soon as you connect your smartphone/phone to the USB port of your computer or laptop, it immediately begins to charge automatically. This is, so to speak, the norm. Even if you connect the device to the USB port of the TV, the smartphone will start charging in the same way. Yes, not as fast as from the network, but it will charge. Still, some users complain that when they plug in the device, it doesn't even start charging. What's the matter?
If we were talking about tablets, answering the question would be much easier: this is due to the fact that some tablet models do not initially support USB charging. The reason is simple: they waste more energy than they receive from the USB port of a computer or laptop. This applies to large tablets; with much smaller smartphones there are no such restrictions, and therefore we need to look for the reason.
Restarting the device
This is the first thing you should do when dealing with this type of problem. If there is a failure in the smartphone software, a reboot is what allows you to deal with it in most cases.
Reboot the gadget, reconnect it to the USB port and see if charging has started.
Cable inspection
It would seem that what could happen to a USB cable? It looks like new... Yes, most often the USB cable really looks like new or at least is in excellent condition, but this does not mean that it is functioning normally. It is enough just to squeeze it once, for example, with a chair leg, so that it stops working.
By the way, this is easy to check. Connect the USB cable with your phone to the wall charger and see if the device charges. If so, it's definitely not the cable.
By the way, even if the cable is working, but you have another one, try using it.
Cleaning the contacts of the microUSB connector
Pay attention to the microUSB port on the smartphone itself. Perhaps dust has accumulated in it and the contacts need to be cleaned - they are the problem.
In a good way, it is better to clean the contacts with an eraser, but it simply cannot fit into such a small hole, so you can use a toothpick or a match with cotton wool. And be extremely careful - one awkward movement and the microUSB port will be disabled. In this case, the phone will not charge at all.
Using other USB ports
Be sure to use a different USB port if available. It is possible that the current USB port is not receiving power, or there is not enough current, or it has completely failed.
Lack of charging current
If there is not enough current, the smartphone will not charge from the USB port. However, like other devices.
Why is there a lack of current? The reasons may be different: lack of energy in the USB port located on the front panel - a common problem, you need to use the port located on the rear wall of the system unit; low-power motherboard circuits; component settings, etc.
microUSB port does not work
In this case we are talking about the microUSB port of the smartphone. If it fails, then the device does not charge at all and there is only one way out - to change the part.
What to do if nothing helps?
First, try connecting your smartphone to another computer or laptop to a USB port. If it still doesn’t charge, the problem is probably in the device itself, but only a specialist can find out the real reason.
