Phone Comparison - Microsoft Lumia 640 XL vs Xiaomi Redmi 2 Prime vs Samsung Galaxy On7

general General Info

Manufacturer Microsoft Xiaomi Samsung
Announced March 2015 August 2015 October 2015
Status Available - April 2015 Available - August 2015 Available - November 2015
Price Rs. 12,999 ($191.16) [Similarly Priced] Rs. 6,999 ($102.93) [Similarly Priced] Rs. 8,990 ($132.21) [Similarly Priced]
Colors Matte cyan, Orange, Black, Matte white, Glossy white Black, White White, Black
Form Factor Candybar Candybar Candybar
Dimension 157.9 x 81.5 x 9 mm
(6.22 x 3.21 x 0.35 in)
134 x 67.2 x 9.4 mm
(5.28 x 2.65 x 0.37 in)
151.8 x 77.5 x 8.2 mm
(5.98 x 3.05 x 0.32 in)
Weight 171 g (6.03 oz) 133 g (4.69 oz) 172 g (6.07 oz)
2G Network GSM 850 / 900 / 1800 / 1900 GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 900 / 2100 HSDPA
4G Network - LTE LTE
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Microsoft Windows Phone 8.1 with Lumia Denim Android OS, v4.4.4 (KitKat) Android OS, v5.1 (Lollipop)
Processor Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 Quad-core 1.2 GHz, Qualcomm MSM8916 Snapdragon 410
GPU Adreno 305 Adreno 306 Adreno 306
RAM 1 GB 2 GB 1.5 GB
Internal Memory 8 GB 16 GB (13.78 GB for Apps and Phone Storage) 8 GB
External Memory microSD, up to 128 GB microSD, up to 32 GB microSD, up to 128 GB

display Display

Type IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display IPS LCD capacitive touchscreen TFT capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.7 inches 4.7 inches 5.5 inches
Resolution 720 x 1280 pixels (259 ppi) 720 x 1280 pixels (312 ppi) 720 x 1280 pixels (267 ppi)
Screen-to-Body Ratio 68.88% 67.83% 70.89%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 13 MP, 4128 x 3096 pixels 8 MP, 3264 x 2448 pixels 13 MP, 4128 x 3096 pixels
Flash LED flash LED flash LED flash
Features Auto focus, Carl Zeiss Optics, 1/3'' Sensor Size Auto focus, 1.4 µm Pixel Size, BSI Sensor, Geo-tagging, Touch Focus, Face/smile Detection, HDR Auto focus, Geo-tagging, Touch Focus, Face Detection
Video 1080p@30fps 1080p@30fps 1080p@30fps
Front Camera 5 MP, 1080p [Similar] 2 MP, 720p [Similar] 5 MP [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps HSPA, LTE Cat4 150/50 Mbps HSPA, LTE
Bluetooth v4.0, A2DP v4.0, A2DP, LE v4.1, A2DP
Wi-Fi Wi-Fi 802.11 b/g/n, DLNA, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, hotspot
USB microUSB v2.0 microUSB v2.0, USB Host microUSB v2.0
GPS Yes, with A-GPS, GLONASS, Beidou Yes, with A-GPS, GLONASS, Beidou Yes, with A-GPS, GLONASS
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 8 GB, 1 GB RAM 16 GB (13.78 GB for Apps and Phone Storage), 2 GB RAM 8 GB, 1.5 GB RAM
Expandable Storage microSD, up to 128 GB microSD, up to 32 GB microSD, up to 128 GB
USB OTG - 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 not supported

battery Battery

Type Li-Ion Battery Li-Po Battery Li-Ion Battery
Capacity 3000 mAh 2200 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)
- Up to 11 h (3G)