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Apple Watch Series 4 disassembly: The battery is 4% larger than before
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Following the iPhone XS and iPhone XS Max, iFixit completed the disassembly of Apple Watch Series 4, providing us with more information on the internal components of the 44mm LTE version. Appearance Series 4 is not much different from Series 3. It can be found by X-rays that the internal changes are very large. Viewed from the side, the 4 series is significantly thinner (0.7 mm) than Series 3. The back cover of the Apple Watch Series 4 is designed with ceramic + sapphire. Apple Watch Series 4 new mold model A2008. The other is the serial number and a small vent. Heat ready to open the screen. Slowly turn on the monitor. The familiar Trinity cable is safely removed and we can look at the display carefully. After the screen is disassembled, we can better understand the outline of the new display. 44mm is much larger than the 3rd generation 42mm, but the 4th 40mm version is not much different from the 3rd generation 42mm version. Boys can consider it. Buy 4 generation 40mm version. On the back we found three chip packages, two of which were sealed, while the third did not have any marks behind their metal shields. Next is the part of the battery. This is the battery of the Apple Watch Series 4. Apple claims that the Series 4 can last for 18 hours. The battery information is 1.113Wh (291.8 mAh, 3.81V), model A2059. Looking at the details, you can see the battery pack of 291.8 mAh and 3.81 V, labeled A205. Lifetime has also increased by 4%. Gasket used by Force Touch. The two-layer cable stack used instead of side-by-side expansion is very streamlined. Here, there is a component responsible for vibration - the Taptic Engine, also known as the electromagnetic oscillation linear actuator. Thinner than before. Because of the thinner and longer Taptic Engine, iFixit says it still takes up a lot of internal space, otherwise the battery capacity can be further increased. Next, look at the speaker section, now the microphone has moved around the digital crown, and the speaker can use that space to get a larger volume. This is the new speaker of the Apple Watch Series 4, which is said to increase the volume by 50%. Finally, take a look at the chip part. The new Apple S4 chip is only screwed. In the previous Apple Watch, the processor was firmly glued. Heart rate sensor at the bottom of the Apple Watch Series 4. When the heart rate sensor array is disassembled, the entire bottom pops up. The above chips include: Red: A88 AY10 Orange: 18206 00D5This golden circle is a streamlined antenna. Following the iPhone XS and iPhone XS Max, iFixit completed the disassembly of Apple Watch Series 4, providing us with more information on the internal components of the 44mm LTE version. The internal gold cylinder has tiny scratches that allow the optical encoder (small black box on the ribbon cable) to track its rotation. The elastic bracket behind the cylinder may transmit the electrical signal of the finger to the watch to complete the ECG circuit. The small switch behind the spring acts as a mechanical button for the crown. In addition, there is a good washer on the outer crown to prevent liquid from entering. iFixit says the repairability of the Apple Watch Series 4 is close to the iPhone, and only the highly glued screen is the main obstacle. In addition, they say the battery can be replaced directly. In short, the Apple Watch Series 4 has a fixable score of 6 (out of a 10 points). This is also the fixable score for iPhone XS and iPhone XS Max.
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