Xiaomi Redmi Note 4 Help: Learn How to Fix It Yourself.

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The Redmi Note 4 is a smartphone by the Chinese electronics company Xiaomi Inc. The first version was developed in 2016 and called the Redmi Note 4. It had a launch exclusively in China and this was followed by an upgraded phone in 2017 and a global launch in 2017. That year the Redmi Note 4 sold over 20 million units globally and 10 million units in India alone.

The Redmi Note 4 features Qualcomm's Octa-core 2.0 GHz, Snapdragon 625 CPU, and Adreno 506 GPU. It has a 5.5 inch display. The body of the phone is made of anodized aluminum. One notable feature is a fingerprint sensor on the back of the phone which can take pictures with both the front and rear cameras. It runs the MIUI 11.0 based on the Android 7.1 operating system.

The Redmi Note 3 preceded the Redmi Note 4 and in 2018 the Redmi Note 5 followed.

Operating System: MIUI 8 based on Android 6.0.1 Marshmallow

Display: 5.5-inch 1080p (1920x1080) IPS LCD panel
2.5D curved glass
401ppi pixel density

SoC: Octa-core Qualcomm Snapdragon 625
Eight Cortex A53 cores at 2.0GHz
14nm

GPU: Adreno 506 with Vulkan API, OpenCL 2.0, and OpenGL ES 3.1
650MHz

RAM: 2GB/3GB/4GB

Storage: 32GB/32GB/64GB
microSD slot up to 128GB

Rear camera: 13MP with f/2.0 lens
PDAF, LED flash
1080p video recording

Front shooter: 5MP with f/2.0 lens
1080p video recording

Connectivity: LTE with VoLTE
Wi-Fi 802.11 a/b/g/n, Bluetooth 4.1, GPS, GLONASS
Micro-USB, 3.5mm audio jack, IR blaster

Battery: 4100mAh battery
Fast charging (5V/2A)

Fingerprint: Rear fingerprint sensor