Engineering:Xiaomi Redmi 2

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Xiaomi Redmi
Xiaomi logo.svg
Codename2014818
BrandXiaomi
ManufacturerXiaomi
Slogan"Always Believe That Something Wonderful is About to Happen"
SeriesRedmi
First releasedJanuary 2015; 9 years ago (2015-01)[1]
PredecessorRedmi 1S
SuccessorRedmi 2 Prime (Revision), Xiaomi Redmi 3
TypeSmartphone
Form factorSlate
Operating systemMIUI
System on chip1.2 GHz Qualcomm Snapdragon 410 MSM8916
CPUQuad Core ARMv8 1.2 GHz
GPUAdreno 306 GPU
Memory1GB and 2GB(Enhanced)
Storage8GB and 16GB(Enhanced)
Removable storageUp to 32GB
Battery2200 mAh
Data inputsMulti-touch capacitive touchscreen;
Accelerometer;
A-GPS;
Digital compass;
Proximity sensor;
Push buttons;
capacitive touch-sensitive buttons
Display1280 x 720 pixel, 4.7 inch IPS Display (312ppi)
Rear camera8 Megapixel, BSI, f/2.2, Full HD video recording
Front camera2 megapixels, f/2.0, HD video recording
References[2]

Xiaomi Redmi 2 is a Smartphone by Xiaomi released in January 2015.[1] It is the successor to the Xiaomi Redmi 1 family.

Features

The Xiaomi Redmi 2 is powered by Qualcomm Snapdragon 410 Chipset and comes in 2 variants, a normal version which packs 1GB RAM and 8GB of user memory and an enhanced version which packs 2GB RAM and 16GB of user memory.

Software

The Redmi 2 offers Android 4.4 KitKat with proprietary MIUI v6 custom graphical user interface pre-installed by the manufacturer and can be upgraded to MIUI v9 via OTA. The Redmi 2 comes with a factory-unlocked bootloader, allowing users from the outset to further develop the OS and "root" the device, or gain legitimate privileged control in Android's subsystem.

The software-development community has released custom ROMs and Kernels for the phone, even though the lack of any kernel sources provided by the manufacturer. The kernel sources were released a year later.[3][4] The Redmi 2 has achieved unofficial stable builds of CyanogenMod 11 (based on Android 4.4), 12.1 (Android 5.1) and official nightly builds of CyanogenMod 13.0 (Android 6.0.1) and CyanogenMod 14.1 (Android 7.1.1)[5][6][7][8] Development of the latter version is continued in the LineageOS project after CyanogenMod's discontinuation.[9]

Display

The Redmi 2 has a vibrant 11.9 cm (4.7") IPS panel fully laminated display with 1280x720 HD resolution at 123 pixels per cm (PPCM) or 312 PPI. It has also 178° In-plane switching (IPS) technology which delivers stunning color consistency from almost any angle. It is also designed with a fully laminated display which allows pixels to sit close to the glass, so colors pop right off the screen and are less affected by glare.

All of this is protected with a highly shatterproof and scratch-resistant AGC Dragontrail glass that is known for being incredibly strong despite being very thin and light.

Hardware

The Redmi 2 is powered by a 64-bit Snapdragon 410 Quad-Core clocked at 1.2-GHz with Adreno 306 graphics engine which supports OpenGL ES 3.0 and DirectX.

It has a Cortex-A53 processor which has up to 50% faster CPU performance than its predecessor, the Cortex-A7.[10]

Parts Provider

  • Processor: Qualcomm
  • Modem: Qualcomm
  • PMIC: Qualcomm
  • Wifi/Bluetooth: Qualcomm
  • Connectivity: Qualcomm
  • Audio: Qualcomm
  • RAM: Samsung, Micron, Elpida
  • Storage: Samsung, Micron, Toshiba
  • Display panel: Sharp, AUO, BOE, EBBG
  • Touch: Focaltech, Atmel
  • Camera: Samsung, OmniVision
  • Battery: Coslight, Sunwoda

Successor

Redmi 2 has been updated with two models, namely Redmi 2 Prime (Global) and Redmi 2 Pro (China only). The Redmi 2 Prime has a model number of 2014811 (code name HM2XWCPro / wt88047), and it supports the usual LTE/WCDMA/GSM modes. The Redmi 2 Pro has a model number of 2014813 (code name HM2XTDPro / wt86047), and most notably it supports more bands of TDD-LTE and also TD-SCDMA.[11][12]

The Redmi 2 Prime with model number 2014811 has two minor variants, which can use the same ROM as 2014811. One is 2014817, which is used in South Africa, Indonesia, Philippines and Singapore.[13] The other one is 2014819, which is found in Brazil and Indonesia.[14]

A variant of 2014811, called the 2014812 supports CDMA networks.[15]

Some regions get the model number / variant 2014815.[16]

Xiaomi Redmi 3 is an Android smartphone developed and produced by Xiaomi. The Xiaomi Redmi 3 was announced in January 2016.[17]

References

  1. 1.0 1.1 "Xiaomi Redmi 2". gsmarena.com. https://www.gsmarena.com/xiaomi_redmi_2-6884.php. Retrieved 2017-11-22. 
  2. "Redmi 2 Features". mi.com. http://www.mi.com/en/redmi2/specs/. Retrieved 2015-07-11. 
  3. "Official Redmi 2 kernel source.". https://github.com/MiCode/Xiaomi_Kernel_OpenSource/tree/thomas-kk-oss. 
  4. "MiCode/Xiaomi_Kernel_OpenSource". https://github.com/MiCode/Xiaomi_Kernel_OpenSource. 
  5. "[ROM[Redmi 2][29/08] CyanogenMod 11.0"]. http://forum.xda-developers.com/android/development/hm201481x-cyanogenmod-11-0-t3159419. 
  6. "[ROM[WT88047][L][5.1.1] CyanogenMod unofficial builds"]. http://forum.xda-developers.com/android/development/rom-cyanogenmod-unofficial-builds-t3200883. 
  7. "[ROM[WT88047][M][6.0.x] CyanogenMod unofficial builds"]. http://forum.xda-developers.com/android/development/rom-cyanogenmod-unofficial-builds-t3267958. 
  8. "CyanogenMod Downloads Redmi 2- Wingtech WT88047". http://get.cm/?device=wt88047. 
  9. "LineageOS Downloads: Builds for wt88047". https://download.lineageos.org/wt88047. 
  10. "ARM Cortex-A53 Processor". https://developer.arm.com/products/processors/cortex-a/cortex-a53. Retrieved 29 March 2017. 
  11. "The model 2014811 and 2014813 ? they is different?". http://en.miui.com/thread-89904-1-1.html. 
  12. "Xiaomi Redmi 2 Pro - PROHARDVER! Összefoglaló". https://prohardver.hu/tema/xiaomi_redmi_2_pro/index.html. 
  13. "FASTBOOT ROM FOR REDMI 2 (2014817) (INDONESIA)". http://en.miui.com/thread-130220-1-1.html. 
  14. "Flashing Redmi 2 (HM2014819)". http://en.miui.com/thread-144175-2-1.html. 
  15. "[redmi2prime[2014812] 4G support in Indonesia (telkomsel)"]. http://en.miui.com/thread-479162-1-1.html. 
  16. "Redmi 2 - 2014813 z 1 Gb RAM?... - Dyskusja ogólna". https://miuipolska.pl/forum/topic/5341-redmi-2-2014813-z-1-gb-ram/. 
  17. "Redmi 3 @ ¥699! 4100 mAh battery, Hybrid Dual Sim,13 MP Camera, Snapdragon 616 - Redmi 3 - Xiaomi MIUI Official Forum". http://en.miui.com/thread-205468-1-1.html. 

Xiaomi Redmi 2