Lenovo Phab 2 Pro Teardown

AR (augmented reality) is like an invisible hand, make the Internet and real life combined, with the development of this technology, the market has mobile phone begun to support the AR technology. In September last year, Lenovo released the first mobile phone equipped with TangoAR technology – Lenovo PHAB 2.

Lenovo PHAB2 Pro is the world’s first consumer grade devices use of Google Tango technology, Lenovo, Google and Qualcomm work together to design it. The hardware is equipped with a sensor array and three rear cameras. The real scene can be turned into a virtual space, allowing users to interact with virtual elements in the real world.

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The first step is removing two screws beside the USB Type-C port with screwdriver.
Due to PHAB 2 Pro body size is relatively large, so the size of the screw is much thicker than the general phone.

After opened the back cover, you can see a fingerprint module connected to the motherboard.

After the back cover removed, you can see a huge battery and motherboard. PHAB 2 Pro’s fuselage also uses the classic three-stage design, the upper is the motherboard, the middle is the battery, and the bottom is the sub board and speaker module.

The PHAB 2 Pro has three rear cameras, including a 16 megapixel camera for camera / video recording, and two depth-aware cameras and motion-tracking cameras for AR-aware motion.

The back cover has four holes, because in addition to the three cameras. There is a hole for the flash.

Remove three screws securing the plastic bracket.

The bottom motion tracking camera is fixed with a plastic bracket, and is used to secure the battery cable and the main FPC.

The depth sensing camera surface is covered with a rubber ring to fill the space between the camera and the back cover.

Remove three screws securing the camera bracket.

We can see the depth sensing camera and the flash using the metal bracket fixed together.

After removing the motherboard, we can see PHAB 2 Pro’s metal frame built-in a copper tube, covered with a layer of greaseS. It can transfer the heat of the chip to the entire metal frame.

There is a groove on the metal frame, used to fix the position of the camera. The groove + screw design is quite strong.

Light distance sensor, noise reduction microphone module integrated into a module. The right side is 16 million pixel camera, then the right is the handset.

Remove the loudspeaker module. Under the loudspeaker is sub board.

Sub-board integrated micro-USB port, vibration motor and microphone.

PHAB 2 Pro is equipped with Qualcomm snapdragon 652 processor, 4GB RAM+64GB ROM, between the chip and the metal shield is also filled with thermal grease.

PHAB 2 Pro’s four cameras

Built-in 4050mAh battery, support fast charge

In general, the Lenovo PHAB2 Pro dismantling is not difficult, may be the reason for the larger size of the machine itself, the layout of the internal components are more relaxed, so that the future maintenance more convenient.

PHAB2 Pro’s three rear camera modules are using a certain structure to be fixed on the motherboard. and in order to ensure the processor’s long-term high-frequency operation, PHAB2 Pro’s internal designed a heat pipe, the heat of the chip to spread to a larger area of the metal frame.

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