Lenovo Vibe Z K910 vs Samsung DoubleTime I857
Lenovo Vibe Z K910
Samsung DoubleTime I857
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 850, 900, 1900, 2100HSDPA 850, 1900, 2100
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4G networkLTE 850, 1800, 2100-
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HSDPA speed42 MbpsHSDPA, 7.2 Mbps
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HSUPA speedHSUPAHSUPA, 2 Mbps
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LTE speedLTE, Cat4, 150 Mbps download, 50 Mbps upload-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-112011-10
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Status2013-112011-11
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Design
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SIMMicro-SIMMini-SIM
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Height149.1 mm113 mm
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Width77 mm62 mm
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Thickness7.9 mm15 mm
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Weight145.2 g148 g
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Keyboard-QWERTY
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ColorsSilver, TitaniumBlack/white
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Display
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Display typeIPS LCD capacitive touchscreenTFT capacitive touchscreen
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Physical size5.5 inches3.2 inches
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Resolution1080 x 1920 pixels320 x 480 pixels
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Pixel density401 ppi180 ppi
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Display colors16777216262144
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Hardware
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CPUQuad-core 2.2 GHz Krait 400800 MHz Scorpion
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ChipsetQualcomm Snapdragon 800Qualcomm MSM7230
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GPUAdreno 330Adreno 205
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Memory RAM2 GB256 MB
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Internal storage16 GB260 MB
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Memory cardmicroSD
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Memory card max-32 GB
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OS
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OSAndroid OS, v4.3 (Jelly Bean)Android OS, v2.2 (Froyo)
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Main camera
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Main camera13 MP3.15 MP
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Primary camera resolution4128 x 3096 pixels2048 x 1536 pixels
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Primary camera video1080p@30fps320p
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flash-
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Selfie camera
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Secondary camera-No
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Selfie camera5 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtonesVibration; MP3, WAV ringtones
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Multimedia
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Radio-No
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Radio FMFM radio-
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi HotspotYes-
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WLAN WiFi Dual BandYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v3.0
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSYes, with A-GPS
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush Mail-
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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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Browser
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HTMLHTML5Yes
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Adobe Flash-Yes
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity3000 mAh1200 mAh
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Battery removableNon-removable-
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Talk time33 h6 h
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Standby time648 h250 h