TeardownXiaomi Mi 4Xiaomi Mobile Phone

Xiaomi Mi 4 Disassembly

In this guide, I’ll explain how to disassemble Xiaomi Mi 4 to remove the back cover, battery, camera, Speaker, Power button, screen and motherboard. Refer to this guide. You can repair your Xiaomi Mi 4.

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Specifications
Dimensions: 139.2 x 68.5 x 8.9mm
Weight 150 g
Display: 5.0 inch 1080 x 1920 pixels IPS LCD capacitive touchscreen
Internal: 16/64 GB, 3 GB RAM
Rear camera: 13 MP, 4128 x 3096 pixels
Front camera: 8 MP, 1080p@30fps
OS: Android OS, v4.4.3 (KitKat)
Chipset: Qualcomm MSM8974AC Snapdragon 801
CPU: Quad-core 2.5 GHz Krait 400
GPU: Adreno 330

Tools needed.

In order to install a bigger capacity battery, the Mi4 with a curved back cover.

Xiaomi Mi 4’s back cover

Antenna signal outlet and SIM card tray.
The frame is made of stainless steel.

Remove all screws securing the middle frame.

The middle frame has been removed.

Currently, we only have GSM/WCDMA version.

The flash bulb is screwed on the phone’s plastic outer shell.

Xiaomi Mi 4 using a 3080mah Li-ion battery, battery cells from Sony.

Power button and volume control button

Rear camera

The PCB board integrated an antenna, a micro USB port and a LED light.

Micro USB slot uses 6pin, Mi4 support 9V/1.2A fast charge.

ATMEL MXT641T chip allows you to use it with gloves and also wet fingers.
It also supports for suspend touch up to 2cm.

Most of the chips are covered by the metal shield.

Toshiba 16GB eMMC ROM

Qualcomm WCD9320 audio chip

Qualcomm WCN3680 Wi-Fi, Bluetooth, FM radio chip, support for 802.11ac 5Ghz Wi-Fi and Bluetooth 4.0.

Qualcomm WTR1625 chip does not support LTE, but it’s integrated GPS function.

Samsung 3GB RAM + Qualcomm MSM8X74AC 2.5ghz Quad Core processor
And remember this chipset does not support LTE as what we mentioned earlier.

AVAGO ACPM-7600 dual-band Power Amplifier Module, designed for code division multiple access cellular

Qualcomm PM8941 power management IC

Qualcomm PM8941 power management IC, support Quick Charge 2.0 standard

Infrared transmitter receiver

For more guides, check out the Xiaomi Mi4 device page.

Via it168.com

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3 Comments

  1. hey i was wondering if you could go even further and show me how to replace the screen and digitizer. I’ve looked all over with no luck. you’d be a lifesaver

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