Of course, any charger in the process of its work, at least a little, but must necessarily warm up, here it is enough to recall the Joule-Lenz law, which indicates to us that if current flows through a conductor, then heating of this conductor will also be observed, unless of course we are talking about a real conductor, for example, about the same copper, or about a semiconductor from which diodes and transistors are made.
Even the most ordinary wires, one way or another, always warm up a little from the current. But some chargers sometimes get too hot. Let's try to figure out why this is happening.
In the case of current chargers, Joule heat is not the only reason for heating or overheating. Any modern network charger is above all. And in the step-down pulse converter there is, firstly, a pulse transformer on ferrite or at least a ferrite choke.
Iron transformers in chargers today, perhaps, are not found. Secondly, in pulse converters there are field-effect transistors and, thirdly, rectifier diodes. Thus, there are as many as three sources of warming up here.
Ferrite core
At the input of a typical charger, there is a power supply that converts AC voltage to DC voltage. This constant voltage of about 300-310 volts is supplied with the help of short pulses to a pulse transformer or to a choke (depending on the charger circuitry), which contains a ferrite core.
So, pulses with a frequency of several tens of kilohertz are applied to this inductive element. The core of the inductive element is real, which means that when it is magnetized and demagnetized, eddy currents in it one way or another arise, not to mention saturation. So, during the operation of the charger, this ferrite core heats up.
And if the developer of the charger tried to make it as compact as possible, then the core must have chosen and set the minimum size possible for a given power, while the frequency of the converter was overestimated. As a result, the core, of course, overheats.
If, for example, the normal frequency for the core is 50 kHz, and all 250 kHz is applied to it. The size turned out to be smaller, however, more heat will be released in return, because ferrites that can be magnetized at a high frequency without overheating are more expensive, and the size, again, will turn out to be larger, which is not beneficial for marketing.
Transistor
A transistor (field-effect or bipolar) converts the rectified mains voltage into high-frequency pulses, which are supplied. This is how most chargers work. In rare cases, there may be two transistors. If the charger is relatively powerful, then the transistor needs a radiator to remove heat, because the transistor heats up just according to the Joule-Lenz law.
If the manufacturer of the power supply unit decided to save on the size of the radiator, or did not install it at all, or even installed cheap transistors with a high channel resistance, then the device, of course, will overheat. In non-original chargers, this is often found.
Rectifier diodes
Rectifiers, converting a low impulse voltage into a constant low voltage for charging, stand at the output, and they also heat up. They have a voltage drop from 0.2 (at best) to 0.5 volts, and with an output current of, say, 1 ampere, some noticeable amount of heat will already be released only on these diodes. And if the output current is higher, but if the voltage is less, this greatly affects the efficiency.
Output
Thus, if you want your charger to warm up as little as possible and not overheat, buy original (from the manufacturer of the charging device) chargers in which high-quality components are installed, where the developer did not try to save money on everything, but focused on the quality of his product.
The owner of the smartphone sooner or later notices that the phone is warming up. This can happen when talking, actively surfing the Internet, while charging the battery. There is nothing terrible in this, this is the regular operation of the device. But it happens that way. that the temperature of the device rises for no apparent reason, for example, it lies blocked, but at the same time the case is red. Today we will try to figure out why your phone heats up during inactivity, being in standby mode.
Users know that even in a locked state a lot of calculations, graphics processing, communication with cellular network repeaters and a bunch of other obscure procedures take place in a smartphone. These processes are an integral part of the system's operation, but there are software and hardware failures, then the device heats up and quickly discharges for no apparent reason. Let's analyze the main symptoms by which you can understand that something is wrong with the gadget.
- The body of an iPhone or Samsung is hot, and you can clearly feel it.
- The system is buggy, for example, artifacts on the screen or applications start and minimize themselves.
- There is a general inhibition of the system, slow reactions to pressing, or their complete ignorance.
- The smartphone battery lasts for 2-3 hours after 100% charging.
Causes
The reasons that the iphone 5s heats up, we will analyze many of the most basic of them, perhaps you will immediately understand what is the reason for the breakdown of your device. The instruction is applicable not only to Apple technology, but also to Android devices, since the components are similar in functionality, and sometimes even manufactured at the same factory.
Accumulator charging
This is the first thing that comes to mind when they say that the phone gets very hot. When charging, it is not surprising that the phone's battery heats up, this is the normal behavior of the battery when energy starts to flow into it. If the temperature of the case does not reach extreme values and the device can be held in hand, you should not raise the alarm. But when the hand cannot tolerate heating, in this case it is worth looking for the problem and solving it. First, make sure that you are using the original charger, in the next chapter we will analyze in detail how to act when the battery in the phone is very hot.
Why the battery is overheating, we have disassembled a little higher, now we need to understand how to properly cool the phone without damaging it. There are several main ways, we will list them:
- Turn off the device, after 30 minutes you get an absolutely cold smartphone, you can turn it on and actively use it.
- Put the gadget in the freezer, after wrapping it in a cloth or stuffing it into a plastic container. After 10 minutes, the body of the device will become cold.
- Place the device under a working air conditioner, the whole issue is resolved.
A modern smartphone, be it iPhone, Samsung, HTC, is a real computer, the processor of which consists of several cores that process information in a split second. It is not surprising that in the process of operation, several processor cores can generate a decent amount of heat. There is nowhere to take it away, mobile devices do not have cooling systems, like in PCs or laptops, so they have to take it to the case. Hence, strong heating of the case can occur.
If you play a dynamic 3D shooting game for an hour, you will notice how the phone heats up. The battery will start to sag noticeably, giving energy to the processor for the calculation of the complex graphics of the game. A similar picture can be observed with prolonged surfing the Internet, the reasons will be similar.
Active use of the cellular network
By analogy with heating with a heavy load on the processor, the device can warm up when constantly searching for a network or actively surfing the Internet. But there may be a situation, the phone heats up and sits down at the most inopportune moment due to poor signal reception. The device tries to maintain a stable connection with the cellular repeater, actively exchanging information with it, so it is not surprising that the batteries will last for a couple of hours in such conditions.
Let's figure out another situation - why does the phone heat up (iPhone or Samsung, it doesn't matter) when using 3G or during a long conversation. The situations are similar, the exchange of information is very active, it is because of this that the battery is landed, just charged to 100%.
Solution
Now he will answer the question why the iPhone heats up (the instructions are also suitable for Android devices) in detail, we will analyze the main points and tell you how to cool the device case.
Use original chargers
Why is the battery in a cell phone warming up when using a non-original charger? When charging the battery, use an original charger or a high-quality analogue, using cheap Chinese ones is strongly discouraged. They not only do not fully charge the battery, but voltage surges created by a poor-quality power source can ruin an expensive smartphone by removing the power controller or battery from standing. Replacement of which is very expensive, from 2,000 to 5,000 rubles. Is it worth saving 500 rubles on a good power adapter, it's up to you.
Optimizing the operation of the iOs or Android operating system
In order to get rid of the situation when the phone heats up and discharges very quickly, let's try to tidy up the device software. To do this, remove unnecessary applications from the system that use processor and memory resources in the background.
If this does not help and the phone is also very hot, then you can try to reset it to factory settings. Such a measure in 90% of cases will help get rid of problems with overheating of the device.
- How to do this for the iPhone is described here in this article.
- For Android devices, a factory reset is scheduled.
Reducing the load on the battery while constantly searching for a network
To do this, it is enough to switch the device to power saving mode or the so-called "air mode". Requests to the cellular repeater will not pass, since the wireless interfaces will be disabled, but you can use the phone, excluding the Internet and voice communication. This will save battery power until you find yourself in an area of strong signal reception, then turn off power-saving modes and use your smartphone as usual.
Output
In this article, we found the answer to the question of why the smartphone is warming up. If the phone heats up while charging, this is normal, you shouldn't worry about it, you should start worrying when the device is heating up while lying in a locked state. But this can be solved, read the article carefully and watch the video.
Video
The charger is warming up and got a better answer
Answer from Yergei [guru]
Lately this is when, with the onset of summer? When did the heat start?
The chargers get hot, sometimes quite a bit, this is normal. Pay attention to the time of full charge, if it has not changed so that it becomes noticeable and the charge holds about the same as it should, then everything is in order.
Smelling like plastic and smelling a little is also nothing, especially if it is relatively new. Do not keep the charger in direct sunlight while working.
If the charging time and battery life have not changed, then it looks like everything is in order.
But still, do not leave the included memory and other e-mails. devices unattended.
Answer from Qwe[guru]
The infestation can warm up, but it shouldn't smell
Answer from GT[guru]
no, this is not normal, at most it should be warm
Answer from Petrovich[guru]
Change your phone battery
Answer from Kirill kirill[newbie]
Chargers are of different power, different quality and that is why a heating battery or charging is normal. Sometimes the charging itself was heated to such temperatures that it seemed that it would now start to burn. Remember the physics lesson, each conductor will heat up from the resistance voltage and current strength, and if you charge an incompletely discharged phone (smartphone), then the residual charge in the batteries gives a strong resistance and charging charges, but the charging unit or battery will be very hot. So try charge the phone when it turns off, and everything will be okay.
Knowing why the phone heats up, the user can try to lower its temperature.
This will help solve one of the most common problems - although owners of devices on other platforms also face it.
If you leave the question unresolved, a smartphone may not only lose some of its functionality but also prematurely fail.
Danger of overheating
Smartphone manufacturers provide the ability to heat their products in some situations - when running resource-intensive applications, while charging or surfing the Internet.
Sometimes this is even considered the norm and does not require any action to fix the problem on the part of users.
But, if the body of the smartphone heats up constantly (even when they are not using it), you should try to reduce the heating first on your own, and if the problem becomes critical, contact the service.
The danger of a heating smartphone(but the processor and the battery get hot, first of all) lies in the possibility of a noticeable decrease in the battery life. After six months, the period of operation of the gadget without recharging is reduced by 1.5-2 times. Sometimes its battery can even explode or self-ignite.
Overheating reasons
The main reasons for overheating of a modern smartphone include:
- The emergence of problems with the platform on which the device is running (including background applications and virus infection);
- The brightness set by the user is too high;
- Operation of wireless network modules;
- The wrong approach to charging a smartphone;
- Unsuitable cover.
Almost every user can face any of these reasons. Moreover, usually several of them simultaneously affect the heating performance of the phone case.
However, dealing with most of these reasons is not so difficult - it is enough to pay more attention to your smartphone than usual.
Operating system problems
Operating system and software failures are often the reason for the rise in smartphone temperatures.
In the process of using the gadget, installing and uninstalling applications, internal memory fills with leftover files, which sometimes affect the temperature of the processor.
An even more serious impact on the heating of the phone is the work of open background applications that reduce the performance of the device and - you can close them using the built-in or third-party "task managers".
The problem may lie in the firmware.- especially if it was reinstalled by the user himself. Errors in the program code lead to overheating of the processor and battery. You can solve the problem with the reinstalled platform by returning the gadget to factory settings or rolling back the system to a previous version (if such an option is provided), during which no such problems were observed. If the phone heats up exactly in the version that was installed by default, it may be worth updating it.
If none of the tips helps to solve the problem, it is possible that the system is infected with a virus.- most likely, a "worm" that transfers the user's personal data to unauthorized persons.
Because of this, the smartphone may heat up, and the confidentiality of the information in its memory is at risk.
The problem is solved by installing a good antivirus (for example, each of these programs has free versions) and scanning the system.
Screen options
One of the answers to the question of overheating may be screen parameters.
The maximum brightness, which is often set when using the smartphone in sunlight, reduces the battery capacity 1.5 times faster than the standard setting.
At the same time, the passive cooling system of gadgets cannot cope with the increase in speed, and the device heats up more.
To solve the problem, you should use the automatic brightness settings. If these indicators do not suit the user, you can change them yourself - increasing when watching a video or during a game, decreasing during normal use.
Heavy CPU utilization
The central processor of a smartphone is most often loaded if the user turns on modern ones.
The temperature is considered normal not higher than 45 degrees, critical - above 50 degrees.
If the gadget heats up more, and none of the ways to fix the situation helps, you should close all applications and wait about a quarter of an hour.
A smartphone that has shut down due to overheating may turn off. After that, you should leave the gadget alone, trying to turn it on no earlier than after 20-30 minutes. In some cases, the problem disappears after switching on.
conclusions
Having followed all the tips for lowering the temperature of the smartphone, the user in most cases achieves the desired result.
The only exception can be a problem with the hardware, which you cannot solve on your own. However, the solution may be to contact the service.
Video:
In ours, we examined the reasons why a smartphone can warm up. Now we will try to answer the main questions of puzzled users, why their phone heats up while charging.
We asked the specialists of some specialists working in service centers for the repair of mobile equipment to comment on this problem. The main thoughts on this matter are summarized below:
Answers from specialists
- If there is no overheating (the phone is slightly warm), then there is no particular reason to worry - any smartphone and battery heats up while charging.
- If you use your phone while charging, this will accordingly be reflected in its temperature. Just take it for granted or put the phone aside until it is fully charged and then continue using it normally.
- If the smartphone has metal case, the problem of "overheating" may be far-fetched - it is clear that the plastic case will have less thermal conductivity, but in neither case will the problem be critical.
- If Wi-Fi or mobile internet is on, and data is being downloaded(auto-updates for applications are included), then this can affect the temperature during charging more than the actual charging process itself.
- Charge your phone with original charger or charging with parameters close to those set by the manufacturer for your mobile phone.
- Firmware... Sometimes, due to an error in the program code of the operating system of the smartphone (Android, iOS) or the shell (manufacturer's add-ons based on Android), there may be problems with heating during charging for some models of smartphones. In this case, you need to look for the current firmware version (if you have an old one), or roll back to a version where no problems were observed (if a new one). Alternatively, you can just wait for the new version and see if the problem is resolved after the update.
You can check the temperature of the smartphone while charging using an app such as CPU-Z.
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