Smart phones will warm up from the moment you call them; This is inevitable. But overheating can be a serious problem on your phone, damaging equipment and affecting performance. What causes a smart phone to warm up, which causes overheating, and how can this be avoided?
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Why do smart phones heat up?
The answer lies in a basic property of physics: motion generates heat. According to Photionary, the amount of heat that your smart phone produces is proportional to the amount of electrical power moving through it. If you are playing a game that requires a lot of the processing units of your device, integrated in a central system-on-a-chip(SoC, or system-on-a-chip) scheme , such units will heat up, since Require more energy to perform their tasks.
The fact that your cell phone does not heat up is no reason to worry, they are designed to work that way. But if the heating is excessive, yes, you have a reason for concern.
Why do smart phones overheat?
In general, aligned components in the system-on-a-chip scheme are extremely well optimized, so overheating is rarely a problem. They are specifically designed to handle high temperatures. When the device approaches a potentially harmful temperature, the processor speed will be reduced, making the performance of the device slower, this being one of the overheating signals; In more severe circumstances, a warning will appear on the device, preventing you from using the device until it cools down.
If the device is overheating frequently, there are a number of reasons that can be investigated and resolved, especially in relation to a hardware overload. ‘Forcing’ your GPU for long is one of the fastest ways to overheat your phone(anyone who has ever tested a Gear VR tastes great).
The same can happen with applications that require too much, but the weight will fall on the CPU. Multi-tasking, extra features and functions(such as widgets ), as well as various other reasons, make your cellphone have to check your connectivity-be it Wi-Fi, Bluetooth, etc.-and all this requires processing power and more electricity The heating of the circuits and the battery.
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Other factors that can cause overheating are external: leave your smartphone in direct sunlight, for example, or throw it in the oven. If you do not abuse your cell phone yet overheating often occurs, it may be the case of hardware malfunction, and it would be worth trying to take off a switch for another device.
There is no better example of poorly optimized hardware, leading to overheating problems, than the infamous Snapdragon 810. This was the main processor of 2015, and was featured in virtually every flagship. From the outset, rumors of overheating problems were circulating, and while performance varied from device to device, the chip certainly was strangling its processing speeds very often to avoid the problem, leading to slower performance.
Overheating seemed particularly to haunt Sony devices, prompting the company to release several patches of software for the Xperia Z3+and even adding cooling tubes to the Xperia Z5, something that Samsung has also done with its recent line tops, Galaxy S7 and S7 Edge.
Now even though there are security checks on the handsets, and considering that most phones do not suffer from frequent overheating, when the problem happens regularly or just an extreme episode, keep in mind that the heat can damage the device.
What damage can occur when an appliance overheats?
Within modern smartphones, you will find a lithium-ion battery, plus one of the clever tricks that technology offers us. A non-rechargeable battery allows only a chemical reaction, designed to generate electricity, to happen in one direction: the electrons leave the battery to travel through a circuit(your cell phone). Rechargeable batteries, in turn, allow this reaction to occur in both directions, and the battery provides and receives charge, doing this hundreds of times.
Lithium-ion batteries are the best rechargeable batteries available at the moment but still have disadvantages. There are two main problems. One is that these batteries depreciate even when they are not used. This happens relatively slowly, but you’re lucky if you get two or three years of use of the battery in question.
Secondly, they are very sensitive to heat. Anything above about 30 degrees Fahrenheit will negatively impact a lithium-ion battery, and this temperature is likely to be reached every time you charge the battery.
The main impact of heat on the battery is that it accelerates its degradation and therefore reduces its capacity faster, thus reducing its life.
One of the most dramatic overheating symptoms is the explosion of a lithium-ion battery. We have all read the horror stories in the media about it, but it is worth remembering that the chances of this happening are minimal. For this to happen, there needs to be a “thermal leak,” a vicious feedback loop, where increasing the temperature causes the reaction rate to increase, which in turn increases the temperature even more, and so on.
For this to happen, you need either internal damage, which is usually controlled by a circuit breaker, or extreme external conditions(such as throwing your cell phone on fire, for example). For a battery to explode, you will need to heat it above 200 degrees Celsius. What are the chances of this happening?
When it comes to the circuit under the SoC scheme , the processor speed will be limited to prevent overheating, which makes your device slow, sometimes rendering it unusable. If there is too much heat for too long, there may be physical damage to the chip. Again, as in the case of the battery, this last possibility is quite unlikely since there are safety measures to avoid this scenario. But even so, overheating can be worrisome-not to mention the bummer in having to wait for your ‘cool’ device. Some cellphones are more prone to overheating(Sony Xperia Z3 +, I’m talking about you), but, anyway, it’s something unusual.
The worst thing you can do to a battery is exposure to heat when fully charged. So it may not be a good idea to charge at 100%, as your battery will be periodically checked and recharged up to 100 percent, causing eventual equipment stress. The discharge depth also affects battery life, which means it is best not to let the charge reach zero. If you charge from, say, 30 percent to about 80 percent, you’re treating your battery well, and possibly avoiding overheating. Although it may sound like something inconvenient(and it is), this could more than double the amount of charge cycles of a battery.
Our official photographer, Ira, has extensive knowledge of the dangers of using a smartphone that is fully charged but still plugged into a power outlet. She had to replace five or six batteries in her Galaxy S3(practically once a year) and one of the devices swelled like a balloon, as you can see in the pictures below-a demonstration of the dangers that can afflict a battery.
To reduce or prevent circuit overheating, avoid overstating when playing one of those ultra-demanding games or watching videos for a long time, do not abuse multitasking in apps that require a lot of processing, try to avoid using Bluetooth for periods And only use Wi-Fi on stable connections. Essentially, avoid a large number of processes that require too much of your mobile phone whenever possible.
Using an app: Coolify
The Coolify application is intended to prevent overheating of the device by constantly monitoring the overall temperature of the device and interfering with the system values. It is particularly indicated during recharging or when using a very heavy application. Many devices get very hot during heavy use of the internet, and Coolify does its work in such cases as well. In addition to preventing overheating, as a “side effect” it prolongs battery life.
How it works
Coolify is not a task killer because it has no influence on apps or processes. It does not “kill” applications that run in the background and does not free memory. So what does he do? As its developer says, only 80 fixes(“only 80 tweaks”) optimize system values, linked for example to the battery or the Android virtual machine. This interaction with system parameters obviously requires root permissions.
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If you use a custom ROM, the service can also work(it all depends on how it was developed). Coolify supports 80% of custom ROMs. It stands out its incredible work “quiet”, with consumption of RAM near zero. The user could forget that the service runs in the background, if not for its benefits.
The use is very easy, thanks to the simplified interface. Just click “Turn On Normal Temp Protection” to start the service: the root permissions request will appear and, once accepted, the process starts with the appearance of the main screen. In it, you will find the current temperature and also a graph in real time.
In the menu we have access to several sections of the app. Between them:
- Cooling: A timestamp of the times when the app “cooled” the device;
- Settings: we will find the options to start the service, to visualize the temperature in Celsius or Fahrenheit, to activate the notifications and to register the Logs in the device;
- Background: to modify the background color or insert a gallery image(last square);
- Upgrade: We can check the updates with one touch.
If you do not ‘push the bar’ with your smartphone and avoid leaving it in direct sunlight in midsummer, you should not have any major problems. Most modern smartphones are designed to handle everything except more intense and strenuous activities, so the chances of a catastrophic collapse in the device are minuscule. If temperatures are rising too high for any reason immediately identifiable, it is worth trying to get a replacement device-in this case, the device is probably defective.
What are your experiences with smartphone overheating? Has your cell phone already had a headache because of this problem? Let us know in the comments!
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