Apple's new flagship iPhone 15 Pro series has officially gone on sale, but some of the first customers to get their hands on the new device are not happy. Recently, it has been reported at home and abroad that the series of mobile phones have serious problems with fuselage heating, and the iPhone 15 Pro series has been nicknamed "dragon fruit".

An up master at Station B tried to play the game "Original God" with iPhone 15 Pro, in the room temperature environment of 26.5 degrees Celsius, 30 minutes after the end of the game time, the body temperature has soared to 49 degrees Celsius, and there are visible frame drops.
Another up owner on the same platform said that after recording vlog for ten minutes with the iPhone 15 Pro Max, the body temperature reached 51 degrees Celsius.
So far, there has been a lot of ridicule online.
According to the reflection of some foreign netizens in the Apple community, the fuselage temperature is too high when making phone calls, taking photos, charging and other operations, and even a number of netizens said that in the case of remaining memory space is large enough, even if you do not use the phone, it will heat up.
What is the cause of the fever? Apple has yet to offer an official explanation.
There are three possible reasons: the heat dissipation film area is smaller than the previous generation of iPhone, the motherboard ignores heat dissipation, and the thermal conductivity of the titanium alloy frame is poor.
The A17 chip is also suspected to be the culprit. South Korean media BusinessKorea quoted some industry insiders as pointing out that the overheating of the iPhone 15 Pro Max may be related to TSMC's 3nm process. One of the factors behind this speculation is that the fin-type field-effect transistor (FinFET) process used in TSMC's 3nm process has reached miniaturization limits.
The media pointed out that as the chip size is miniaturized below the 3nm process, the current control challenge of using fin FET has increased, and the greater concern is that if TSMC's first-generation 3nm process products are defective, subsequent processes using the same technology may also encounter problems.
However, the statement was denied by Apple industry chain analyst Guo Mingd «“¹, his latest survey pointed out that the overheating problem of the iPhone 15 Pro series has nothing to do with TSMC's 3nm process, it is likely to make the weight lighter, so the design of the cooling system compromise, the new machine cooling area is small, the use of titanium alloy affects the heat dissipation efficiency
Kuo expects Apple to fix the problem through software updates, but unless the processor performance is reduced, the improvement is likely If Apple does not properly address this issue, it may adversely affect the shipment of the iPhone 15 Pro series product cycle.