This month, Apple Watch Series 2 And iPhone 7/7 Plus At the same time, this new 2nd generation Apple watch may look no different from the previous generation in appearance, but it has built-in GPS, higher waterproof level, and more powerful performance. How does it do that? Let's disassemble it!
The second generation OLED Retina display supports Force Touch
The size is the same as the first generation Apple watch, and the Series 2 has 38mm (272 x 340 resolution* 290ppi ）And 42mm (312 x 390 resolution* 302ppi ）Two size versions
Equipped with Apple S2 chip
Integrated GPS, NFC, Wi Fi 802.11b/g/n 2.4 GHz and Bluetooth 4.0
Accelerator, gyroscope, heart rate sensor, microphone, speaker, light sensor
Operation under water up to 50 meters
Run the watchOS 3 operating system
along with Apple Watch Series 2 The release and launch of the first generation Apple Watch has also been replaced by the "Series 1". The back of the Seires 2 remains the previous generation of optical heart rate sensor.
In the process of opening the screen, it can be found that the adhesive strength of Apple Watch Series 2 is much higher than that of last year. I believe this is to achieve high strength waterproof performance.
From the perspective of external design, the Apple Watch Seires 2 is almost the same as the previous generation. When you open it and enter the interior, you can see that a group of ZIF connectors have replaced the strange press connector last year. The interior space so arranged can be easily opened and the connectors are firm and secure, which makes this generation of Apple Watch easier to repair.
Remove the connecting tape and disassemble the battery. Like the battery tray on the iPhone, the Apple Watch Series 2 also uses three-point screws to fix it. We use the 64 Bit Driver Kit to remove them, and then pry with a crowbar to remove the battery.
Compared with last year's Apple Watch, this year Apple Apple Watch Seires 2 The adhesive used on the battery is enough to fix the screen of the iPad. It can be seen that the amount of adhesive used is so large that people who disassemble the battery do not like the spicy adhesive. However, considering that it needs to swim in the water, it is understandable.
After removing the adhesive on the back of the battery, we can finally see some parameters on it. The 38mm version of Apple Watch Series 2 is equipped with 3.77V, 273mAh batteries and 1.03Whr. The 42mm version should have a larger battery capacity.
Compared with the previous generation products, the battery capacity of Series 2 has increased by 32%, because Series 2 now has a new GPS module. In order to ensure the battery life level, it has to increase its capacity. At the same time, Apple said that the battery life of the Series 2 is the same as that of the previous generation, which is 18 hours. It seems that there must be some gains and losses. The battery capacity has been increased, but it has not been able to bring a more lasting battery life. In some evaluations, it can be found that the Series 2 still needs to be charged once a day.
It is worth mentioning that the battery will weaken and age. As time goes by, you may need to replace the battery later, but if you open the watch body, you may lose the waterproof performance.
The Force Touch sensor and washer can be pried out with a plastic crowbar, which is the same as the design of the previous generation, Unlike the previous generation, Force Touch gaskets also have integrated circuits.
The next thing to be disassembled is the Taptic Engine. It can be seen that the vibration motor on the Series 2 is much larger than that of the previous generation.
In fact, many devices also use this kind of linear resonance brake. Since early on, many electronic devices have begun to use the pancake type LRA linear resonance brake. The reason Apple chose to use the rectangular Z-axis LRA linear resonator is that they can use space more efficiently and control the vibration feedback received by users more accurately.
After removing the Tapetic Engine, you can see that the antenna module is on the top of the fuselage. Compared with the antenna module of the previous generation product, the antenna module of Series 2 looks much more complex, which may be caused by the new GPS antenna.
Then we found a complex cable assembly, which is connected to the microphone and speaker. There is also a microphone opening between them, and an elastic rubber tube, which looks like a gas pressure port.
The Series 2 has a special function that when the speaker is flooded, it will create a sound wave vibration to drive the water out, Apple Watch Series 2 There are also gaskets and O-rings.
The Home key and the digital crown encoder are on this ribbon cable.
Now we can finally see Apple Watch Series 2 S2 SiP (System in Package)* System level packaging ）
The last one is the sensor array on the back of the fuselage, These four sensors are infrared sensors, 2 x visible LED and photoelectric sensors, which can be used to track the wearer's heart rate.
IFixit is Apple Watch Series 2 Repairable rating given: six branch
Although the strap of Apple Watch is not universal in the industry, it can still be easily disassembled and replaced.
It is a little difficult to disassemble the screen, but it is not impossible. The screen is connected to the ZIF connector, which is the first step of disassembly.
As long as you can open the screen and enter the body, it is not difficult to take out the battery.
Replacing any component cable requires micro soldering, but unlike the previous generation Apple Watch, SiP does not need to be removed.
Because S2 is completely wrapped, maintenance is extremely difficult.
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