Acer Iconia B1-721 vs Lenovo Vibe K4 Note
Acer Iconia B1-721
Lenovo Vibe K4 Note
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPAHSDPA 850, 900, 1900, 2100
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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LTE speed-LTE, 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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Status2014-12016-1
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Oficially announced2014-12016-1
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Design
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SIMYesDual SIM (Micro-SIM, dual stand-by)
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Height199 mm153.6 mm
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Width122.3 mm76.5 mm
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Thickness11.4 mm9.2 mm
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Weight323 g158 g
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ColorsBlack/RedBlack
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Display
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Display typeTFT capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size7.0 inches5.5 inches
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Resolution600 x 1024 pixels1080 x 1920 pixels
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Pixel density170 ppi401 ppi
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Display colors-16777216
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Hardware
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CPUDual-core 1.3 GHzOcta-core 1.3 GHz ARM Cortex-A53
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ChipsetMediatek MT8312Mediatek MT6753
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GPUMali-400Mali-T720MP3
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Memory RAM1 GB2, 3 GB
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Internal storage16 GB16, 32 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB128 GB
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OS
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OSAndroid OS, v4.2 (Jelly Bean)Android OS, v5.1 (Lollipop)
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Main camera
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Main camera13 MP, f/2.2
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Primary camera resolution640 x 480 pixels-
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Primary camera videovideo1080p@30fps
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Primary camera Autofocus-phase detection autofocus
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Primary camera flash-dual-LED (dual tone) flash
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Camera features-Geo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Secondary cameraNo-
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Selfie camera5 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes, with stereo speakers
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NotificationsN/AVibration; MP3, WAV ringtones
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Multimedia
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RadioNo-
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Radio FM-FM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi Hotspot-Yes
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WLAN WiFi Direct-Yes
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USBmicroUSB 2.0microUSB 2.0
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BluetoothYesv4.0
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Bluetooth A2DP-Yes
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bluetooth LE-Yes
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GPSYesYes, with A-GPS
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Features
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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush Email-
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Messaging Push Mail-Push Mail
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JavaYes, via Java MIDP emulatorNo
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Sensors-Fingerprint, accelerometer, compass, gyro, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Po
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Battery capacity2955 mAh3300 mAh
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Battery removable-Non-removable
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Talk time--
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Talk time 2G-23 h
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Talk time 3G-22 h
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Standby time--
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Standby time 3G-265 h
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