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[Review] Teardown and Reassemble Redmi Note 4G (Dual Sim)! Device from 2014!

2019-06-20 06:25:44
6316 77

Hi Xiaomi Fans!
In this article I want to show you the disassembly and assembly of the smartphone Xiaomi Redmi Note 4G Dual Sim. The smartphone is very old, one of the first Redmi Note series.


Manufacturer Xiaomi
Model Redmi Note 4G
Other names Hongmi Note 4G, Red Rice Note 4G
Year 2014 August
Operating system Android 4.4
Accum Capacity (mAh) 3.200

Dimensions (WxHxT, mm) 78.7 x 154 x 9.44
Weight (g) 187

Processor Type Qualcomm Snapdragon 400 MSM8928
Clock Frequency (MHz) 1.200
Video accelerator Adreno 305

RAM (MB) 2048
ROM (GB) 8

Phone (850, 900, 1800, 1900), LTE (1800, 2100, 2600), UMTS (850, 900, 1900, 2100)
Bluetooth 4.0
Wi-Fi 802.11a, b, g, n, ac. 2.4/5Ghz

Screen size 5.5
Screen resolution (px) 720 x 1280
Screen Type IPS

Camera rear (MP) 13
Autofocus, Photo flash +
Camera front (MP) 5

A few photos and descriptions of what you can see:
All device parts)

Logical bord

Power controller Qualcomm PM8916 -The PM8916 device integrates all wireless handset power management, general housekeeping, and user interface support functions into a single mixed-signal IC. Its versatile design is suitable for multimode, multiband phones, and other wireless products such as data cards and PDAs.

High-level PM8916 functional block diagram
Since the PM8916 device includes many diverse functions, its operation can be understood better by studying the major functional blocks individually. Therefore, the PM8916 document set is organized by the device functionality as follows:
  • Input power management
  • Output power management
  • General housekeeping
  • User interfaces
  • IC interfaces
  • Configurable pads – either multipurpose pads (MPPs) or general-purpose input/output (GPIOs) – that can be configured to function within some of the other categories.

PM8916 device features

Wi-Fi, Bluetooth - WiFi 802.11b/g/n, Bluetooth 4.0, HSPA+.

Hynix Chip - RAM memory 2Gb.

Qualcomm Snapdragon 400 MSM8928 - high-performance SoC for smartphones, the maximum frequency of which reaches 1200 MHz. The chip has four ARM Cortex-A7 processor cores, making it much more efficient for multitasking than dual-core solutions. It is based on the architecture of Harvard, the second-level cache is 1 MB for each core. Made according to the standards 28-nm process technology. The chip includes an integrated video card Qualcomm Adreno 305. It is ideally optimized for video acceleration, image creation, works with 1080p video. There is support for OpenCL and OpenGL ES 3.0, a 13.5 megapixel video camera, Bluetooth 4.0 and LPDDR2 or LPDDR3 memory.

Bottom fee

Touch Screen Controller MXT336S-A 336. Provides the ultimate interface for automotive touchscreens withsizes up to 7”.

Key Features
Automotive qualifiedAEC-Q100 qualified Temperature range
of up to -40° to +105°C
High level of analog filtering Support of Single layer shield less sensors
Unlimited, unambiguous touch Multi-touch support up to 16 simultaneous touches
High SNR through high voltage driveEnables gloved hand operation
Smart processing with integrated
Embedded single and dual-touch gestures. Rejection of unintended touches such as a resting hand
Embedded post processingNoise filtering. Improved EMI and ESD behavior
High scan speedUp to 280Hz scan speed to support character recognition for in-host processing

Camera module

Volume and Power Button

Thanks to All SMOD and MOD!
Thanks to Administrator Elaine2046!


Number of participants 7 Experience +91 Pack Reason

View Rating Log

2019-06-20 06:25:44
Favorites36 RateRate

News Reporter

ᎮᏒᎥᏁፈᏋ | from Redmi Note 4X


Great Information
2019-06-20 16:05:11

Advanced Bunny

miXpocoXf2 | from app


Nice nice lovely technical help and excellent tips
2019-06-20 16:11:03
Nice technical write up
2019-06-20 16:38:05

Wizard Bunny

Sampath madurai | from Redmi Note 7


Nice thanks for your information
2019-06-20 16:42:37

Master Bunny

m_mese_mosi | from Redmi Note 7


very nice
it's good explanation
2019-06-20 16:52:42

Pro Bunny

Ajitkulkarni | from MI 8


Old device!!
2019-06-20 17:03:00

Master Bunny

I'm Azman | from Mi MIX 2S


thanks for info
2019-06-20 17:05:52

Wizard Bunny

TomHenson Author |


2019-06-20 17:07:25
Great Information!!!
2019-06-20 17:07:46

Master Bunny

Tin Naing Zaw | from app


Very nice.
2019-06-20 17:07:46
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