Phone Comparison - Lenovo K900 vs Asus Zenfone 4 vs Xiaomi Redmi 1S

general General Info

Manufacturer Lenovo Asus Xiaomi
Announced January 2013 January 2014 May 2014
Status Available - April 2013 Available - June 2014 Available - May 2014
Colors Black Black, White, Red, Blue, Yellow Black, Chinese Red, Metallic Gray/ blue, green, yellow panels
Form Factor Candybar Candybar Candybar
Dimension 157 x 78 x 6.9 mm
(6.18 x 3.07 x 0.27 in)
124.4 x 61.4 x 6.3-11.2
(4.9 x 2.42 x 0.25-0.44)
137 x 69 x 9.9 mm
(5.39 x 2.72 x 0.39 in)
Weight 162 g (5.71 oz) 115 g (4.06 oz) 158 g (5.57 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 GSM 900 / 1800 / 1900
3G Network HSDPA 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 1900 / 2100
Messaging SMS, MMS, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Android OS, v4.2 (Jelly Bean) Android OS, v4.3 (Jelly Bean), upgradable to v4.4.2 (KitKat) Android OS, v4.3 (Jelly Bean)
Processor Dual-core 2.0 GHz, Intel Atom Z2580 Dual-core 1.2 GHz, Intel Atom Z2520 Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8228 Snapdragon
GPU PowerVR SGX544 PowerVR SGX544MP2 Adreno 305
RAM 2 GB 1 GB 1 GB
Internal Memory 16 GB 8 GB 8 GB
External Memory microSD, up to 32 GB microSD, up to 64 GB microSD, up to 32 GB

display Display

Type IPS LCD capacitive touchscreen LCD Capacitive Touchscreen, Corning Gorilla Glass 3 IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2
Colors 16M colors 16M colors 16M colors
Size 5.5 inches 4.0 inches 4.7 inches
Resolution 1080 x 1920 pixels (401 ppi) 480 x 800 pixels (233 ppi) 720 x 1280 pixels (312 ppi)
Screen-to-Body Ratio 67.94% 59.74% 64.61%
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 5 MP, 2592 x 1944 pixels 8 MP, 3264 x 2448 pixels
Flash dual-LED flash No LED flash
Features Geo-tagging, Touch Focus, Face Detection Auto focus, Geo-tagging, Panorama Auto focus, 1.4 µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR
Video Yes, 1080p@30fps Yes, 1080p@30fps 1080p@30fps
Front Camera Yes, 2 MP [Similar] Yes, VGA [Similar] 1.3 MP, 720p@30fps [Similar]

connectivity Connectivity and Data Rate

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

memory User Memory

Internal 16 GB, 2 GB RAM 8 GB, 1 GB RAM 8 GB, 1 GB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 64 GB microSD, up to 32 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 not supported NFC not supported NFC not supported

battery Battery

Type Li-Ion battery Li-Po Battery Li-Po Battery
Capacity 2500 mAh 1200/1600 mAh 2000 mAh
Stand by - Up to 192 h -
Talk Time - Up to 10 h -