In all of these devices the main camera is 13 megapixel and the front camera is 5 megapixel

Xiaomi has introduced Redmi 4 after so many rumors. This mid range device comes with different models

Xiaomi Redmi 4A

This is the cheapest phone among other xiaomi phones. It has the following hardware specifications

Display: 5 inch IPS 720 Pixel resolution

Chipset: Snapdragon 425

Processor: Quadcore 1.4 GHz Cortex A53

GPU: Adreno 308

RAM: 2GB

Internal Storage: 16GB

Main Camera: 13 MP

Front camera: 5 MP

Battery: 3120 mAh

OS: Android Marshmallow v8 MIUI

Price: 499 Yuan or $74

Availability: 11 November (In China)

Xiaomi Remdi 4

It has a wonderful back camera with 2.5D glass on its front

It has the following hardware specifications

Display: 5 inch IPS, 720P Resolution

Chipset: Snapdragon 430

Processor: Octacore 1.4 GHz Cortex A53

GPU: Adreno 505

RAM: 2GB

Internal Storage: 16 GB (can be increased)

Main camera: 13 MP (Face detection autofocus, dual LCD flash)

Selfie camera: 5 MP

Sensor:  Finger print reader on the back below the camera

OS: Marshmallow with MIUI 8

Battery: 4100 mAh

Miscellaneous:  Dual sim slot, Bluetooth 4.1 support

Price: 699 Yuan ($104)

Color: Gold, Silver, Dark grey

Availability:  7 November (In China)

Xiaomi Redmi 4 Prime

In this set Xiaomi has doubled the storage and RAM is now 3 GB

It has the following hardware specifications:

Display: 5 inch IPS, 1080 P resolution

Chipset: Snapdragon 625

Processor: 2.0 GHz Cortex A 53

GPU: Adreno 506

RAM: 3GB

Internal Storage: 32 GB

Price: 899 Yuan ($133)

Availability: 7 November (In China)

All hardware and design of this device is just like other models. Therefore it has dual tone, dual LCD and also flash with its camera.