Phone Comparison - Lenovo K900 vs Xiaomi Redmi 1S vs Xiaomi Mi 4

general General Info

Manufacturer Lenovo Xiaomi Xiaomi
Announced January 2013 May 2014 July 2014
Status Available - April 2013 Available - May 2014 Available - Q3 2014
Colors Black Black, Chinese Red, Metallic Gray/ blue, green, yellow panels Black, White
Form Factor Candybar Candybar Candybar
Dimension 157 x 78 x 6.9 mm
(6.18 x 3.07 x 0.27 in)
137 x 69 x 9.9 mm
(5.39 x 2.72 x 0.39 in)
139.2 x 68.5 x 8.9 mm
(5.48 x 2.7 x 0.35 in)
Weight 162 g (5.71 oz) 158 g (5.57 oz) 149 g (5.26 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 2100 HSDPA 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network - - LTE
Messaging SMS, MMS, EMail, IM SMS, MMS, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Android OS, v4.2 (Jelly Bean) Android OS, v4.3 (Jelly Bean) Android OS, v4.4.3 (KitKat)
Processor Dual-core 2.0 GHz, Intel Atom Z2580 Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8228 Snapdragon Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801
GPU PowerVR SGX544 Adreno 305 Adreno 330
RAM 2 GB 1 GB 3 GB
Internal Memory 16 GB 8 GB 16/64 GB
External Memory microSD, up to 32 GB microSD, up to 32 GB No

display Display

Type IPS LCD capacitive touchscreen IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2 IPS LCD capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.5 inches 4.7 inches 5.0 inches
Resolution 1080 x 1920 pixels (401 ppi) 720 x 1280 pixels (312 ppi) 1080 x 1920 pixels (441 ppi)
Screen-to-Body Ratio 67.94% 64.61% 72.14%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 13 MP, autofocus 8 MP, 3264 x 2448 pixels 13 MP, 4128 x 3096 pixels
Flash dual-LED flash LED flash Dual-LED Flash
Features Geo-tagging, Touch Focus, Face Detection Auto focus, 1.4 µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR
Video Yes, 1080p@30fps 1080p@30fps 2160p, 1080p@30fps, HDR
Front Camera Yes, 2 MP [Similar] 1.3 MP, 720p@30fps [Similar] 8 MP, 1080p@30fps [Similar]

connectivity Connectivity and Data Rate

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

memory User Memory

Internal 16 GB, 2 GB RAM 8 GB, 1 GB RAM 16/64 GB, 3 GB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 32 GB No
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 supported

battery Battery

Type Li-Ion battery Li-Po Battery Non-removable Li-Ion Battery
Capacity 2500 mAh 2000 mAh 3080 mAh
Stand by - - -
Talk Time - - -