Phone Comparison - Microsoft Lumia 640 XL vs Samsung Galaxy S6 Edge (CDMA) vs Xiaomi Mi 4i

general General Info

Manufacturer Microsoft Samsung Xiaomi
Announced March 2015 March 2015 April 2015
Status Available - April 2015 Available - April 2015 Available - April 2015
Price Rs. 12,999 ($191.16) [Similarly Priced] Rs. 34,900 ($513.24) [Similarly Priced] Rs. 8,999 ($132.34) [Similarly Priced]
Colors Matte cyan, Orange, Black, Matte white, Glossy white White Pearl, Black Sapphire, Gold Platinum Black, White, Blue, Yellow, Pink
Form Factor Candybar Candybar Candybar
Dimension 157.9 x 81.5 x 9 mm
(6.22 x 3.21 x 0.35 in)
142 x 70.1 x 7.1 mm
(5.59 x 2.76 x 0.28 in)
138.1 x 69.6 x 7.8 mm
(5.44 x 2.74 x 0.31 in)
Weight 171 g (6.03 oz) 132 g (4.66 oz) 130 g (4.59 oz)
2G Network GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - G925V
CDMA2000 1xEV-DO - G925V, G925P, G925R
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 - G925V HSDPA 850 / 900 / 1900 / 2100
4G Network - LTE band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 13(700) - G925V LTE
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, EMail, IM SMS, MMS, EMail, IM
Build Features - - Corning Gorilla Glass 4 back panel
- Fingerprint sensor (PayPal certified)
- Samsung Pay (Visa, MasterCard certified)
-

hardware Hardware and OS

OS Microsoft Windows Phone 8.1 with Lumia Denim Android OS, v5.0.2 (Lollipop) Android OS, v5.0 (Lollipop)
Processor Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 Quad-core 1.5 GHz Cortex-A53 & Quad-core 2.1 GHz Cortex-A57, Exynos 7420 Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615
GPU Adreno 305 Mali-T760MP8 Adreno 405
RAM 1 GB 3 GB 2 GB
Internal Memory 8 GB 32/64/128 GB 16/32 GB
External Memory microSD, up to 128 GB No No

display Display

Type IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 4, Curved Edge Screen IPS LCD capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.7 inches 5.1 inches 5.0 inches
Resolution 720 x 1280 pixels (259 ppi) 1440 x 2560 pixels (576 ppi) 1080 x 1920 pixels (441 ppi)
Screen-to-Body Ratio 68.88% 72.01% 71.57%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio No FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 13 MP, 4128 x 3096 pixels 16 MP, 2988 x 5312 pixels 13 MP, 4128 x 3096 pixels
Flash LED flash LED Flash LED flash
Features Auto focus, Carl Zeiss Optics, 1/3'' Sensor Size OIS, Auto-focus, Geo-tagging, Touch Focus, Face Detection, Auto HDR, Panorama Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR
Video 1080p@30fps 2160p@30fps, 1080p@60fps, 720p@120fps, HDR, dual-video rec. 1080p@30fps
Front Camera 5 MP, 1080p [Similar] 5 MP, 1440p@30fps, dual video call, Auto [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 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps, EV-DO Rev.A 3.1 Mbps HSPA, LTE
Bluetooth v4.0, A2DP v4.1, A2DP, LE, apt-X v4.0, A2DP
Wi-Fi Wi-Fi 802.11 b/g/n, DLNA, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n, dual-band, 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 Yes, with A-GPS, GLONASS
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 8 GB, 1 GB RAM 32/64/128 GB, 3 GB RAM 16/32 GB, 2 GB RAM
Expandable Storage microSD, up to 128 GB No No
USB OTG - Supported -

Apps Sensors

Fingerprint fingerprint not supported fingerprint 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 supported NFC not supported

battery Battery

Type Li-Ion Battery Non-removable Li-Ion Battery Li-Po Battery
Capacity 3000 mAh 2600 mAh 3120 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 26 h (3G) -