Teardown

Yota YotaPhone 3 Teardown

As a product that first adopts dual-screen design, the Yota YotaPhone 3 receives much popularity from the public with its portability, appearance design, and feature function. Today, we will start the teardown on the Yota YotaPhone 3 to see its internal structure.

First of all, utilize a clip to remove the SIM card tray.
remove the SIM card tray
Then, use a screwdriver to take out two screws at the bottom. Next, we will start the teardown on the front of the smartphone.
take out two screws
After disconnect most snap joints from the back cover, we can easily take out the back cover. But separate the back cover from the phone body gently to avoid breaking the wire which connects the secondary screen and phone body.
remove the back cover
To remove the back cover, we need to disconnect the cable which connects back cover and phone body. Before that, we need to remove screws that securing the metal plate.
remove the back cover
Remove the back cover. The sponge mat can be seen. Besides, we can see the vice board at the bottom, battery connector, screen connector on the front and secondary screen connector (front the left to right at the bottom).
remove the back cover
Two chips are found on the secondary screen on the phone’s back cover. One is Synaptics S32028, which is a touch chip of the secondary screen. This chip also is applied to the HTC One and other phones as the main touch chip.
two chips on secondary screen
The other chip on the secondary screen is the MX25. We infer that the MX25 is a driver chip from E-ink Carta’s second generation e-ink display.
MX25
Now, we will continue the teardown. Disconnect the connector below the motherboard. We need to first disconnect the battery connector before removing other connectors.
Disconnect the connector
The YotaPhone 3 comes with a 13MP front camera which has the F/2.2 aperture. The front camera doesn’t support automatic focus.
front camera
The front surface of the motherboard is covered by a large area of the heat dissipating copper. The motherboard has high space utilization, and it has a compact design on components. The motherboard is in small size.
motherboard
Chip list: PM8953, SKYWORKS 77645-11, SKYWORKS 77928-21.
Chip
Although the chip core area on the back of the motherboard adopts bare design, it doesn’t mean that the chip core area fails to have good electromagnetic shielding. In fact, the roll cage of the phone body is designed with frame shielding barrier.
chip core area
Chip list: Qualcomm Snapdragon 625 2.0GHz Adreno 506, Samsung KMRV50014M 128GB flash eMMC 5.0 (4GB LPDDR3), Qualcomm PMI8952 power management chip, 358762G 518227.
Chip
Use tweezers to take out the 12MP main camera which supports Dual Pixel AF technology.
take out the 12MP main camera
Then, disassemble the module at the bottom. Remove all the visible screws which are divided into black and silver colors.
Remove all the visible screws
The loudspeaker module is connected to the vice board at the bottom via metal contacts. The module has no integration of other units.
loudspeaker module
The vice board
vice board
The smartphone sports a 3,280mAh battery instead of 3000mAh battery announced by official party. The battery has the capacity of 12.47Wh. The cell is provided by ATL.
battery
Summary

The phone’s small motherboard gives the battery big space area. But the internal process that the Yota YotaPhone 3 uses needs to be further improved. For example, its vibrator’s connecting line is fixed by welding. But in general, the phone is a much competitive product if you prefer portable e-book reading.

Source
ZOL

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