Phone Comparison - Lenovo K900 vs Lenovo Vibe X vs Lenovo A680

general General Info

Manufacturer Lenovo Lenovo Lenovo
Announced January 2013 September 2013 March 2014
Status Available - April 2013 Available - December 2013 Available - March 2014
Colors Black Black/Silver Black, White
Form Factor Candybar Candybar Candybar
Dimension 157 x 78 x 6.9 mm
(6.18 x 3.07 x 0.27 in)
6.9 mm thickness
(0.27 in thickness)
145 x 73.5 x 10.8 mm
(5.71 x 2.89 x 0.43 in)
Weight 162 g (5.71 oz) 120 g (4.23 oz) 165 g (5.82 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 2100 HSDPA HSDPA 2100
Messaging SMS, MMS, EMail, IM SMS, MMS, EMail, IM SMS, MMS, Push Mail, EMail, IM

hardware Hardware and OS

OS Android OS, v4.2 (Jelly Bean) Android OS, v4.2 (Jelly Bean) Android OS, v4.2.2 (Jelly Bean)
Processor Dual-core 2.0 GHz, Intel Atom Z2580 Quad-core 1.5 GHz, MTK MT6589T Quad-core 1.3 GHz, Mediatek MT6582M
GPU PowerVR SGX544 PowerVR SGX544 Mali-400MP2
RAM 2 GB 2 GB 1 GB
Internal Memory 16 GB 16 GB 4 GB ROM
External Memory microSD, up to 32 GB No microSD, up to 32 GB

display Display

Type IPS LCD capacitive touchscreen IPS LCD capacitive touchscreen Capacitive Touchscreen, OnCell technology
Colors 16M colors 16M colors 16.7M colors
Size 5.5 inches 5.0 inches 5 inches
Resolution 1080 x 1920 pixels (401 ppi) 1080 x 1920 pixels (441 ppi) 480 x 854 pixels (196 ppi)
Screen-to-Body Ratio 67.94% - 64.60%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio Stereo FM radio - FM Radio with Recording
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 5 MP, 2592 x 1944 pixels
Flash dual-LED flash LED flash LED flash
Features Geo-tagging, Touch Focus, Face Detection Auto focus, Geo-tagging, Touch Focus, Face Detection Fixed focus, Geo-tagging, Touch Focus, Face Detection, HDR
Video Yes, 1080p@30fps Yes, 1080p@30fps Yes, 1080p@30fps
Front Camera Yes, 2 MP [Similar] Yes, 5 MP [Similar] Yes, VGA [Similar]

connectivity Connectivity and Data Rate

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

memory User Memory

Internal 16 GB, 2 GB RAM 16 GB, 2 GB RAM 4 GB ROM, 1 GB RAM
Expandable Storage microSD, up to 32 GB No 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-Ion Battery Li-Po Battery
Capacity 2500 mAh 2000 mAh 2000 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)