Before start the teardown process, let’s take a look the specification of OnePlus 3T
5.5-inch (1920×1080 pixels) Full HD Optic AMOLED display with 2.5D curved Corning Gorilla Glass 4 protection
2.35GHz Quad-Core Snapdragon 821(MSM8996-AC) 64-bit processor with Adreno 530 GPU
6GB LPDDR4 RAM with 64GB/128GB (UFS 2.0) storage
Oxygen OS 2.5 base on Android 6.0 (Marshmallow)
Dual nano SIM slots
16-megapixel rear camera with LED flash, Sony IMX298 sensor, 1.12 micron pixel size, f/2.0 aperture, PDAF, OIS, 4K video recording at 30 fps, 720p slow motion at 120fps
16 MP, f/2.0, 1.0 µm pixel size, 1080p
Dimensions: 152.7×74.7×7.4mm; Weight: 158g
4G LTE with VoLTE, WiFi 802.11ac dual-band (MIMO), Bluetooth 4.2, GPS + GLONASS + BDS, NFC, USB Type-C
3400mAh battery with Dash Charge (Fast battery charging: 60% in 30 min)
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Tools needed: Screw driver, tweezers, crowbar, suction cup, guitar pick
Remove the SIM card tray with an E-ject pin.
Remove two screws beside USB Type-C port with a screwdriver.
Use the suction cup to suck the front panel of the phone and open it a little bit. And then, insert a plastic tool between the back cover and the phone body to separate the back cover from the phone.
The back cover has the laser drilled holes for the speaker, microphone and USb Type-C port.
Oneplus 3T’s NFC module located in rear camera area. The mute button module is also integrated in the back cover.
When the back cover was removed, you’ll be able to access the internal components.
The main chips are covered with metal shields. And part of the metal shield is covered with a layer of thermal grease.
Remove the cable is covering the battery, it is used to connect the motherboard to the bottom board.
Uncover all black adhesive tape from the battery.
Disconnect the battery connector from the motherboard and remove the battery.
Oneplus 3T comes with a 3.85V, 3400mAh Li-polymer battery.
Disconnect all cable connected to the motherboard and remove all screws.
Take out the motherboard from the phone.
Here’s Oneplus 3T motherboard.
Rear camera: 16-megapixel rear camera with LED flash, Sony IMX298 sensor, 1.12 micron pixel size, f/2.0 aperture, PDAF, OIS.
Front camera: 16 MP, f/2.0, 1.0 µm pixel size, 1080p.
On the bottom of the phone body, you can access the 3.5mm headphone jack, USB Type-C data port, microphone and sound chamber.
Here’s the bottom board, the 3.5mm headphone jack fixed on the board.
USB Type-C data port and microphone and sound chamber module, One plus 3T support DASH fast charge.
When the bottom board was removed, you can access the fingerprint sensor module.
Like his predecessor, One plus 3T using a FPC1245 fingerprint sensor, assembled by the O-film.
Remove the metal shield from the motherboard.
All metal shields are covering with thermal grease.
Qualcomm WTR3925 RF chip
Samsung 64GB UFS2.0 ROM
Qualcomm PM8996 power management chip
Qualcomm Snapdragon 821 + 6GB RAM