Phone Comparison - Lenovo S939 vs Lenovo A680 vs Xiaomi Redmi Note

general General Info

Manufacturer Lenovo Lenovo Xiaomi
Announced February 2014 March 2014 March 2014
Status Available - February 2014 Available - March 2014 Available - March 2014
Colors Black, White Black, White Various
Form Factor Candybar Candybar Candybar
Dimension 170 x 86.5 x 8.65 mm
(6.69 x 3.41 x 0.34 in)
145 x 73.5 x 10.8 mm
(5.71 x 2.89 x 0.43 in)
154 x 78.7 x 9.45 mm
(6.06 x 3.1 x 0.37 in)
Weight 180 g (6.35 oz) 165 g (5.82 oz) 199 g (7.02 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 2100 HSDPA 2100 HSDPA 1900 / 2100
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Android OS, v4.2.2 (Jelly Bean) Android OS, v4.2.2 (Jelly Bean) Android OS, v4.2 (Jelly Bean)
Processor Octa-core 1.7 GHz, Mediatek MT6592 Quad-core 1.3 GHz, Mediatek MT6582M Octa-core 1.4 GHz Cortex-A7 / Octa-core 1.7 GHz Cortex-A7, Mediatek MT6592
GPU Mali-450MP4 Mali-400MP2 Mali-450MP4
RAM 1 GB 1 GB 1/2 GB
Internal Memory 8 GB ROM 4 GB ROM 8 GB
External Memory microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 GB

display Display

Type IPS LCD Capacitive Touchscreen, OGS Capacitive Touchscreen, OnCell technology IPS LCD capacitive touchscreen
Colors 16M colors 16.7M colors 16M colors
Size 6.0 inches 5 inches 5.5 inches
Resolution 720 x 1280 pixels (245 ppi) 480 x 854 pixels (196 ppi) 720 x 1280 pixels (267 ppi)
Screen-to-Body Ratio 67.36% 64.60% 68.82%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 8 MP, 3264x2448 pixels 5 MP, 2592 x 1944 pixels 13 MP, 4128 x 3096 pixels
Flash LED flash LED flash LED flash
Features Auto focus, Geo-tagging, Touch Focus, Face Detection, 360 degree Panorama, HDR, Image Stabilization Fixed focus, Geo-tagging, Touch Focus, Face Detection, HDR Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, HDR
Video Yes, 1080p@30fps Yes, 1080p@30fps 1080p@30fps
Front Camera Yes, 1.6 MP [Similar] Yes, VGA [Similar] 5 MP [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSDPA, 42.2 Mbps, HSUPA, 11.5 Mbps HSDPA, 21 Mbps; HSUPA, 5.76 Mbps HSPA+
Bluetooth Yes, v4.0 Yes, v4.0 with A2DP v4.0, A2DP, LE
Wi-Fi Wi-Fi 802.11 b/g/n, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot
USB Yes, microUSB v2.0 Yes, microUSB v2.0, USB On-the-go microUSB v2.0, USB On-the-go
GPS Yes, with A-GPS support Yes, with A-GPS support Yes, with A-GPS
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 8 GB ROM, 1 GB RAM 4 GB ROM, 1 GB RAM 8 GB, 1/2 GB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 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 not supported NFC not supported NFC not supported

battery Battery

Type Li-Ion Battery Li-Po Battery Li-Po Battery
Capacity 3000 mAh 2000 mAh 3100 mAh
Stand by - Up to 312 h (2G)
Up to 348 h (3G)
-
Talk Time - Up to 13 h (2G)
Up to 24 h (3G)
-