There are actually many brands of mobile phone coolers, not only do major mobile phone manufacturers have their own cooler products, but third-party brands of coolers are also numerous. But why did I choose Red Magic this time? The reason is simple: as a manufacturer of gaming phones, they understand cooling better. Red Magic's ICE COOL cooling system is well-known in the industry for being highly efficient at heat dissipation. Red Magic is more professional in terms of how to achieve better and more efficient cooling. Compared to other manufacturers' rough and simple hardware-based cooling, Red Magic's AI temperature-controlled cooling is more intelligent, and the combination of software and hardware is more reasonable.

The packaging of the RedMagic Magnetic Cooler 4 Pro is full of esports style, with a black box and a silver sleeve that is somewhat similar to the design style of the Red Magic phone. After opening the package, you can directly see the cooler itself, with the iconic Red Magic logo prominently displayed, and you can already feel the full esports atmosphere before even taking the product out. The RedMagic Magnetic Cooler 4 Pro is relatively large in terms of mobile phone coolers, and it has a certain weight when held in the hand. Considering the magnetic suction area, cooling fins, heat sink, motor, etc. in the design, it is already impressive that the size can be controlled like this, after all, the effect is the most important.

The overall workmanship and texture of the cooler are very good. The whirlwind-style black translucent air intake grid can be seen inside with a high-speed turbine fan and red aviation aluminum alloy heat sink fins, giving a sense of power and speed visually. The side that is close to the phone is all made of thermal conductivity silicone gel, and the surface has been treated with a matte skin-like texture for better fit and friction. Of course, because the magnetic suction version is chosen, there is a strong magnet inside.

Before use, you need to download the Red Magic Equipment Library app, connect the power cable to the cooler, and plug in the power. Here, it is recommended to choose a fast charging head of 27W or more to fully exert the maximum power and efficiency of the cooler. The moment the power is turned on, the cooler starts to work, the fan rotates, and the atmosphere light turns on. Here, we must praise Red Magic's RGB light design. Twelve RGB circular lights surround the Red Magic logo, instantly creating an esports atmosphere. Moreover, in the app, you can personalize the color and mode of the light effect, fully satisfying the personalized pursuit of visual aesthetics of various esports users.

Now, let's take a look at the cooling effect. Just a few seconds after turning on the power, you can feel that the cooler is already very cold, and the cooling effect is very rapid. After just one minute, water droplets begin to condense on the surface. Of course, these effects are only at the sensory level, so we still need to test it with a temperature gun to see how good this effect really is. In order to achieve the best cooling effect of the cooler, I used a 27W charger. Before turning on the cooler, the surface temperature was measured to be 26 degrees Celsius. Two minutes after turning it on, the lowest surface temperature was measured to be -4.8 degrees Celsius. Three minutes later, the lowest surface temperature was measured to be -7.0 degrees Celsius, and it remained at this temperature without any lower temperature being detected.

In terms of actual performance, the difference between the RedMagic Magnetic Cooler 4 Pro and the official claim of -9.0 degrees Celsius is not significant. Considering that the testing environment and equipment are different, this difference should be acceptable. The conclusion is that the cooling effect of the RedMagic Magnetic Cooler 4 Pro under idle state is indeed very powerful, thanks to the fourth-generation TEC semiconductor, a large cooling plate, and a 27W high-power variable frequency cooling system, which brings a very obvious cooling effect.

Next, let's take a look at its actual cooling effect on a mobile phone. The chosen phone is the iPhone 12 Pro, so the magnetic suction version was selected this time, which can be attached to the MagSafe magnetic ring on the back of the iPhone. The suction force is very firm, and there is no risk of dropping throughout the entire use process.

In actual game experience, the RedMagic Magnetic Cooler 4 Pro is excellent at suppressing the temperature of the phone during gameplay. When using the iPhone to play games, the most frequent issue is that the brightness is locked and the frequency is reduced once the temperature is too high, especially the brightness lock which is unbearable. After using the RedMagic Magnetic Cooler 4 Pro, this effect is significantly improved. During two hours of playing Peace Elite, there was no frequency reduction or brightness lock, and the gaming experience was very good.

Of course, besides using the maximum peak power of 27W, the fan speed can also be adjusted smoothly according to the phone's heat generation situation, and this can be flexibly chosen. Of course, the magnetic suction version can also be used on Android phones by attaching the magnetic iron piece to the back of the Android phone. Testing was also carried out on an Android flagship equipped with Snapdragon 8+. After an hour of playing Peace Elite, the frame rate remained stable at 89.8 fps, and the temperature on the back of the phone was only slightly warm after testing at around 24 degrees Celsius room temperature. Without the cooler, this frame rate could not be achieved (as the frame rate may vary due to temperature, environmental conditions, phone status, and game map differences, the tested frame rate is for reference only).

During the use of the cooler, there are two feelings. First, the high-speed turbo fan and turbo cooling fins of the RedMagic Magnetic Cooler 4 Pro have a very stable heat conduction effect, and there is no temperature rise after long-term use, achieving persistent cooling and long-lasting coldness. Another point is that for Red Magic phones or some Android flagships, this cooler can achieve intelligent AI temperature control, automatically adjusting the cooler's power according to the phone's battery temperature in real-time to maintain a constant and stable cooling effect. This is really impressive, a bit like "automatic air conditioning," eliminating the need for manual adjustment and making it very user-friendly.

Overall, I am quite satisfied with the comprehensive cooling performance of the RedMagic Magnetic Cooler 4 Pro, especially the impressive -9.0-degree Celsius cooling effect, the 27W high-power and large cooling plate, as well as the fourth-generation TEC semiconductor, which instantly brings the cooling effect. The other aspects of design, materials used, and even the firmness of the magnetic suction are also very good. If your phone is an Android flagship, you can also choose the 4Pro back clamp version. The only downside of this cooler is the fan noise when operating at maximum power.