Phone Comparison - Lenovo K900 vs Asus Zenfone 6 vs Xiaomi Mi 4

general General Info

Manufacturer Lenovo Asus Xiaomi
Announced January 2013 January 2014 July 2014
Status Available - April 2013 Available - June 2014 Available - Q3 2014
Colors Black Black, White, Red, Gold Black, White
Form Factor Candybar Candybar Candybar
Dimension 157 x 78 x 6.9 mm
(6.18 x 3.07 x 0.27 in)
166.9 x 84.3 x 5.5-9.9 mm
(6.57 x 3.32 x 0.22-0.39 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) 196 g (6.91 oz) 149 g (5.26 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network - - LTE
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, v4.4.3 (KitKat)
Processor Dual-core 2.0 GHz, Intel Atom Z2580 Dual-core 2 GHz, Intel Atom Z2580 Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801
GPU PowerVR SGX544 PowerVR SGX544MP2 Adreno 330
RAM 2 GB 1/2 GB 3 GB
Internal Memory 16 GB 8/16/32 GB 16/64 GB
External Memory microSD, up to 32 GB microSD, up to 64 GB No

display Display

Type IPS LCD capacitive touchscreen IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 IPS LCD capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.5 inches 6.0 inches 5.0 inches
Resolution 1080 x 1920 pixels (401 ppi) 720 x 1280 pixels (245 ppi) 1080 x 1920 pixels (441 ppi)
Screen-to-Body Ratio 67.94% 70.40% 72.14%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 13 MP, autofocus 13 MP, 4128 x 3096 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, Geo-tagging, Touch Focus, Face Detection Auto focus, 1/3' Sensor Size, 1.12┬Ám Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR
Video Yes, 1080p@30fps Yes 2160p, 1080p@30fps, HDR
Front Camera Yes, 2 MP [Similar] Yes, 2 MP [Similar] 8 MP, 1080p@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 DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE
Bluetooth Yes, with A2DP Yes, v4.0 with A2DP, EDR 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 Yes, microUSB v2.0 microUSB v2.0 (MHL), USB On-the-go
GPS Yes, with A-GPS support Yes, with A-GPS support Yes, with A-GPS, GLONASS
Browser HTML5 HTML HTML5

memory User Memory

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

battery Battery

Type Li-Ion battery Non-removable Li-Po Battery Non-removable Li-Ion Battery
Capacity 2500 mAh 3300 mAh 3080 mAh
Stand by - Up to 398 h (3G) -
Talk Time - Up to 28 h (3G) -