Asus Zenfone Zoom ZX551ML vs Energizer Energy E20
Asus Zenfone Zoom ZX551ML
Energizer Energy E20
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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 900, 2100
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4G network-LTE frequency band 1(2100), 3(1800), 7(2600), 8(900), 20(800), 28(700)
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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HSPA speed-HSPA
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LTE speedLTE, Cat4+, 250 Mbps download, 50 Mbps uploadLTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Status2015-102017-11
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Oficially announced2015-92017-11
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Design
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SIMMicro-SIMHybrid Dual SIM (Nano-SIM, dual stand-by)
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Height158.9 mm103.2 mm
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Width78.8 mm51 mm
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Thickness12 mm18.2 mm
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Weight185 g92 g
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ColorsCeramic White, Pure BlackBlack
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Display
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Display typeIPS capacitive touchscreenTFT
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Physical size5.5 inches2.4 inches
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Resolution1080 x 1920 pixels240 x 320 pixels
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Pixel density401 ppi167 ppi
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Display colors16777216262144
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Hardware
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CPUQuad-core
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ChipsetIntel Atom-
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GPUPowerVR G6430-
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Memory RAM4 GB-
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Internal storage32, 64, 128 GB-
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Memory cardmicroSDmicroSD(uses second SIM slot)
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Memory card max128 GB16 GB
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Phonebook-Yes
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Call records-Yes
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OS
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OSAndroid OS, v5.0 (Lollipop)-
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Main camera
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Main camera13 MP, 3x optical zoom
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Primary camera-VGA
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Primary camera resolution4128 x 3096 pixels-
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Primary camera video1080p@30fpsno
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Primary camera flashdual-LED (dual tone) flash-
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Primary camera image stabilizationoptical image stabilization-
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Primary camera laser autofocuslaser autofocus-
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Camera featuresGeo-tagging, HDR, face detection, panorama, touch focusNo
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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; Polyphonic, MP3 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 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi HotspotYes-
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WLAN WiFi DirectYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v2.0
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Bluetooth A2DPYes-
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Bluetooth EDRYes-
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GPSYes, with A-GPSNo
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GLONASSYes-
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GPS NavigatorBeidou-
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Features
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Messaging SMSSMS(threaded view)SMS
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Messaging MMSMMS-
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Messaging EmailEmail-
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Messaging IMIM-
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Messaging Push EmailPush Email-
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JavaNoNo
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SensorsAccelerometer, 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-Ion
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Battery capacity3000 mAh1000 mAh
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Battery removableNon-removable-
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Talk time--
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Standby time--