• Xiaomi Mi 4 vs Xiaomi Redmi Note 2 vs Microsoft Lumia 640 XL LTE Dual SIM

Phone Comparison - Xiaomi Mi 4 vs Xiaomi Redmi Note 2 vs Microsoft Lumia 640 XL LTE Dual SIM

general General Info

Manufacturer Xiaomi Xiaomi Microsoft
Announced July 2014 August 2015 March 2015
Status Available - Q3 2014 Available - August 2015 Available - April 2015
Price - Rs. 9,700 ($141.99) [Similarly Priced] Rs. 14,999 ($220.57) [Similarly Priced]
Colors Black, White Black, White, Yellow, Mint Green, Blue Matte cyan, Orange, Black, Matte white, Glossy white
Form Factor Candybar Candybar Candybar
Dimension 139.2 x 68.5 x 8.9 mm
(5.48 x 2.7 x 0.35 in)
152 x 76 x 8.3 mm
(5.98 x 2.99 x 0.33 in)
157.9 x 81.5 x 9 mm
(6.22 x 3.21 x 0.35 in)
Weight 149 g (5.26 oz) 160 g (5.64 oz) 171 g (6.03 oz)
2G Network GSM 850 / 900 / 1800 / 1900 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100, TD-SCDMA HSDPA 850 / 900 / 1900 / 2100
4G Network LTE LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) LTE
Messaging SMS, MMS, EMail, IM SMS, MMS, EMail, IM SMS, MMS, Push Mail, EMail, IM

hardware Hardware and OS

OS Android OS, v4.4.3 (KitKat) Android OS, v5.0 (Lollipop) based MIUI 7 Microsoft Windows Phone 8.1 with Lumia Denim
Processor Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 Octa-core 2.0 GHz Cortex-A53, Mediatek MT6795 Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400
GPU Adreno 330 PowerVR G6200 Adreno 305
RAM 3 GB 2 GB 1 GB
Internal Memory 16/64 GB 16 GB 8 GB
External Memory No Yes microSD, up to 128 GB

display Display

Type IPS LCD capacitive touchscreen IPS LCD capacitive touchscreen IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display
Colors 16M colors 16M colors 16M colors
Size 5.0 inches 5.5 inches 5.7 inches
Resolution 1080 x 1920 pixels (441 ppi) 1080 x 1920 pixels (401 ppi) 720 x 1280 pixels (259 ppi)
Screen-to-Body Ratio 72.14% 72.02% 68.88%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio FM radio FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 13 MP, 4128 x 3096 pixels 13 MP, 4128 x 3096 pixels 13 MP, 4128 x 3096 pixels
Flash Dual-LED Flash LED flash LED Flash
Features Auto focus, 1/3' Sensor Size, 1.12┬Ám Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR Phase Detection Auto focus (PDAF), Geo-tagging, Touch Focus, Face/smile Detection, HDR Carl Zeiss Optics, 1/3'' sensor size
Video 2160p, 1080p@30fps, HDR 1080p@30fps 1080p@30fps
Front Camera 8 MP, 1080p@30fps [Similar] 5 MP [Similar] 5 MP, 1080p [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE TD-SCDMA HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Bluetooth v4.0, A2DP v4.0, A2DP, LE v4.0, A2DP
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, DLNA, hotspot
USB microUSB v2.0 (MHL), USB On-the-go microUSB v2.0, USB Host microUSB v2.0
GPS Yes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS, Beidou
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 16/64 GB, 3 GB RAM 16 GB, 2 GB RAM 8 GB, 1 GB RAM
Expandable Storage No Yes microSD, up to 128 GB
USB OTG Supported Supported -

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC supported NFC not supported NFC supported

battery Battery

Type Non-removable Li-Ion Battery Li-Po Battery Li-Ion Battery
Capacity 3080 mAh 3060 mAh 3000 mAh
Stand by - - Up to 936 h (2G)
Up to 936 h (3G)
Talk Time - - Up to 31 h 20 min (2G)
Up to 23 h 40 min (3G)