After the appearance of Apple Watch , major domestic mobile phone manufacturers have also begun research and development in the field of smart wear . Vivo Watch is Vivo released a smart wearable device in 2020. So what is special about this round dial smartwatch ?
The watch has a buckle that is easy to remove and can be taken off directly.
The disassembly of the whole machine starts from the back cover, which is fixed by four screws and buckles. After opening, you can see the side buckles and the black waterproof rubber ring between the back cover and the case. A waterproof label is affixed on the left, and the battery interface on the right is fixed by metal sheets and screws.
Both the microphone and the air pressure sensor are equipped with metal protective covers, and the air pressure sensor has white adhesive.
The microphone on the back cover and the metal protective cover of the air pressure sensor are fixed by buckles, the heart rate sensor soft board is fixed with double-sided tape, and the charging contacts are connected to the heart rate sensor soft board through solder joints, and are reinforced by plastic hot melt. There are magnets for absorbing the charging base on the top and bottom of the heart rate blood oxygen sensor and the charging position, and the sensor position also has a transparent filter.
There is a black rubber ring at the LED position of the heart rate sensor soft board. There is also a circle of black stickers on the back of the FPC.
One of the four screws on the middle frame has a tamper-evident label. Remove the screws and disconnect each interface to separate the screen and the motherboard.
Copper foil and foam are pasted on the main board shielding cover, and conductive cloth is pasted on the inside of the metal sheet. There are transparent silicone protective covers on the buttons.
After disconnecting the connector, remove the soft key board fixed with double-sided tape. Conductive cloth is also attached to the back of the soft board.
The battery is fixed on the main board with double-sided adhesive, and white adhesive is used to fix the surroundings. After removing, you can continue to separate the main board and the inner support. The vibrator is welded on the main board, and conductive foam is attached to the surface.
There is an NFC coil and a light sensor on the back of the display.
The screen is a 1.39-inch AMOLED screen with a resolution of 454×454, 326PPI.
Motherboard ic information
The main IC on the front of the motherboard (pictured below):
1: Toshiba-4GB flash memory
2: Cypress-dual mode, Bluetooth 5.0, wireless, MCU
3: Ambiq Micro-Apollo3 Bluetooth MCU
4: STMicroelectronics-Ultra Low Power MCU
5: NXP-NFC control chip
6: STMicroelectronics-Gyroscope + Acceleration Sensor
8: TI-Battery Charge Management IC
As a smart watch, Vivo Watch has 451 components in total. Among them, there are 73 domestic devices, which account for 37.9% of the cost, mainly in non-electronic devices, connectors, screens, and battery parts; there are 33 devices in the United States, accounting for 38.4% of the cost, and they are mainly used for chips.
The whole machine is fixed with 8 screws. One side of the motherboard is the device, and the other side is directly attached to the battery and fixed. There are two LED lights on the heart rate sensor soft board, and five PD sensors (four large and one small). Because the watch is waterproof, it has waterproof measures at each interface.
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