E dismantling: Xiaomi Mi Band 5 standard version is less than 40 yuan, do you think there is no NFC?

Ewisetech has always been concerned about Xiaomi’s smart wear, and almost every generation of products has also been analyzed. In addition to smart watches, the Band is not missed in almost every generation. Suddenly found unconsciously, millet Band also out to the fifth generation. Naturally, this Xiaomi Mi Band 5 will be analyzed by ewisetech.

PS: the analysis data are based on the purchased dismantling equipment. This collection is the standard version of millet Band 5, without NFC.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

Disassembly procedure

The Band and strap can be separated directly, and the strap is made of TPU.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

Because the Band has the water-proof property of 5atm, there is a waterproof glue fixed between the screen and the back cover. It is necessary to heat the gap between the screen and the back cover, and cooperate with the pry to separate the screen from the back cover.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

The motherboard is fixed with the back cover by two cross screws. The battery is connected with the main board through solder joints, and the rotor motor is also directly welded on the main board.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

The 125mah lithium polymer battery of Huizhou Yiwei lithium energy is selected.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

One side of the Bluetooth antenna is connected with the motherboard through solder joints, and the other side is fixed on the top of the rear shell by glue.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

The soft board of heart rate sensor is fixed on the back cover by foam glue. The magnet is fixed beside the charging interface and is used to adsorb the charger.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

Generally speaking, it is easy to disassemble the Band. This Xiaomi Mi Band 5 is no exception, but we also found some small details.

This time, Xiaomi Mi Band 5 selected a 1.1-inch AMOLED screen with a resolution of 294 x 126.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

On the soft board on the back of the screen, the engineer found two unused solder joints, which may be reserved for the NFC coil?

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

After removing the shield from the motherboard, we found two empty pads. A microphone that looks obviously reserved. There is also a wide range of empty pads, ewisetech engineers predict, perhaps the NFC and the matching device location.

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

Main board ic information

Main IC of main board:

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?

1: Dialog – Low Power Bluetooth SOC

2: Winbond-16mb flash memory chip

3: STMicroelectronics gyroscope + accelerometer

3: Sgmicro-oled driver chip

Summary information

There are only two screws to fix the motherboard with less parts. But because the screen and the back cover are fixed by waterproof glue, it is relatively complicated to open the Band. The devices on the motherboard are not protected by dispensing glue. It is expected to share a set of modules with Xiaomi Mi Band 5 NFC version, which only removes the components of NFC function module. (Editor: Judy)

E拆解:小米手环5标准版少了的40元,你以为就少了NFC么?