Cooling System for smartphones: how to get the cell phone to cool down and which systems are more efficient

More power means more energy. Over the years, mobile phones have better processors and are getting faster, but they also have more efficient heatsinks so that this generated heat does not affect performance and does not disturb the use of the device.

With the rise of gaming mobiles, we have seen new mobile cooling systems. Today we want to review the evolution of these components, see how effective they are and what differences we find between the different systems. Cooling the mobile phone is something that has always been done, but increasingly complex techniques and elements are missing to maintain acceptable temperature levels.

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Heat pipes, a basic component to cool the phone for many years

The internal analysis of the Sony Xperia XZ5 already let us glimpse a component that today is very important in most high-end phones. We are talking about the ‘heat pipe’, a heat pipe or [two-phase thermosiphon tubes] (two-phase thermosiphon) that help the mobile to work properly and not suffer from high temperatures.

These heat pipes were also found in devices such as the Lumia 950 and 950 XL. It is a very common component in laptops and PCs and that inevitably in recent years has come to the world of smartphones. We have a metal conduit inside which there is a liquid in charge of dissipating the heat. The liquid enters the gaseous state upon receiving the heating energy and then moves to an area, usually magnesium, where it cools again.

[bs-quote quote=”The two-phase thermosyphon tubes or ‘heat pipes’ are an increasingly common component in the interior of smartphones. And they are keys to dissipate correctly the heat produced by the processor.” style=”default” align=”center”][/bs-quote]

The heat pipes have been progressively increasing in size and in some devices, as we will see later, they occupy a considerable size.

Another element to dissipate the heat that is also used in mobile phones is thermal paste. This is used due to its high thermal conductivity. It serves as an intermediary element and is used to transfer heat from one component to another, usually from the processor to the heatsink.

Essential in mobile gaming, but very common in the high range

With the Samsung Galaxy S7, the South Korean manufacturer already let us see an infographic detailing the cooling system of the high-end mobile. We found a heat tube, on several graphite plates. A material that companies like Fujitsu already recommended to use to create efficient cooling systems in mobile phones. These plates do not consume energy and have thicknesses of less than one millimeter.

In the new devices has been betting on these heat pipes. Sizes and placement change from one to another. In statements from Samsung to Digitimes, the bet on these heat pipes will be maintained as opposed to steam chambers. The latter is a more efficient solution but one that requires more internal space, something that in this increasingly thin mobile trend is difficult to achieve.

Where it seems that we have changes in the internal structure is with this mobile gaming, which opts for a different cooling system. Let’s see what is the bet of the Razer, Nubia, Xiaomi or ASUS mobile phones in refrigeration.

Razer Phone: the classic solution

In this video produced by JerryRigEverything, we see the internal components of the Razer Phone, which features a large heat pipe that occupies part of the lower half of the device. We also find a sheet of copper that helps in heat management.

Unlike the other gaming terminals, the Razer Phone is committed to a traditional cooling system, although it is noted that these components have been chosen to perform the best possible work.

Nubia: dissipation with fans

The Nubia Red Magic is another of the so-called mobile gaming. In this case, in addition to a central copper plate, we find four fans placed in each corner of the mobile.

The idea is that the generated heat expands towards the sides of the mobile and thanks to the fans the wind leaves the device and fails to heat the back cover. We have not been able to try this system first hand, but it is an interesting mechanism that in the future we could see in other models.

Xiaomi Black Shark: liquid cooling

One of the keys of the Xiaomi Black Shark is its liquid cooling system. We have an area of 6000 mm2 that promises to cool the CPU up to eight degrees and is 20% more efficient than the standard cooling tubes that we have been naming up to now.

This dissipation system not only cools faster, it also allows higher benchmark scores because the processor can run at higher clock speeds and stay on top for longer. According to the manufacturer’s data, with this liquid cooling system, it is possible to keep the CPU at maximum for 70% more time. Some numbers that we understand will be compared with devices without any type of refrigeration.

ASUS ROG Phone: Steam camera and accessories to cool the phone

The latest mobile gaming to be introduced, the ASUS ROG Phone, also introduces its own cooling system. In this case, we have a 3D steam chamber that without increasing the thickness of the device in excess, allows heat to flow through the interior of the mobile.

We find a 1mm copper plate that extends over the entire surface to evaporate heat, occupies an area up to 16 times larger than traditional heat pipes and offers 60% higher performance. But the most interesting is an external module ‘AeroActive Cooler‘ that fits like a clamp on the back. A small fan to provide extra cooling to the device.

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Through the software, we can see the temperature of the ROG Phone processor and at the time we want we can adjust the ventilation in three different degrees. Small additions that exemplify the importance of keeping mobile devices cold, especially in those cases where the performance of the device is one of its most important points.

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Vaibhav Mishra

Fan of new technologies and player since small, I do not move without at least one smartphone in the pocket to always stay connected ... and keep some games at hand.