Acer Iconia B1-721 vs Asus Zenfone Go ZB551KL
Acer Iconia B1-721
Asus Zenfone Go ZB551KL
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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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4G network-LTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800)
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HSDPA speedHSDPA21.1 Mbps
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HSUPA speedHSUPA5.76 Mbps
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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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Oficially announced2014-12016-4
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Status2014-12016-5
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Design
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SIMYesDual SIM (Micro-SIM, dual stand-by)
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Height199 mm151 mm
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Width122.3 mm76.9 mm
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Thickness11.4 mm10.7 mm
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Weight323 g160 g
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ColorsBlack/RedCharcoal Black, Floral Pink, Glacier Gray, Glamour Red, Lake Blue, Pearl White, Sheer Gold, Silver Blue
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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 pixels720 x 1280 pixels
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Pixel density170 ppi267 ppi
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Display colors-16777216
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Protection-Corning Gorilla Glass 3
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Multitouch-Yes
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Hardware
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CPUDual-core 1.3 GHzQuad-core 1.6 GHz ARM Cortex-A7
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ChipsetMediatek MT8312Qualcomm MSM8928 Snapdragon 400
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GPUMali-400Adreno 305
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Memory RAM1 GB2 GB
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Internal storage16 GB16, 32 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB64 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/2.0
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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-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, f/2.0
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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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 802.11b, 802.11g, 802.11n
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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 EDR-Yes
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GPSYesYes, with A-GPS
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GLONASS-Yes
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BDS-Yes
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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 EmailPush Email
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, proximity
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Browser
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HTMLHTML5Yes
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity2955 mAh3010 mAh
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Battery removable-Removable
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Talk time--
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Talk time 3G-16 h
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Standby time--
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Standby time 3G-335 h
