Acer Iconia Tab A1-811 vs Microsoft Lumia 640 XL LTE Dual SIM
Acer Iconia Tab A1-811
Microsoft Lumia 640 XL LTE Dual SIM
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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, 1700, 1900, 2100
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HSDPA speedHSDPA42.2 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 announced20132015-3
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Status20132015-3
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Design
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SIMYesDual SIM (Micro-SIM, dual stand-by)
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Height208.7 mm157.9 mm
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Width145.7 mm81.5 mm
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Thickness11.1 mm9 mm
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Weight430 g171 g
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ColorsWhiteBlack, Glossy white, Matte cyan, Matte white, Orange
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Display
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Display typeTFT capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size7.9 inches5.7 inches
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Resolution768 x 1024 pixels720 x 1280 pixels
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Pixel density162 ppi259 ppi
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Display colors1677721616777216
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Hardware
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CPUQuad-core 1.2 GHzQuad-core 1.2 GHz ARM Cortex-A7
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ChipsetMediatek MT8389WQualcomm Snapdragon 400
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GPU-Adreno 305
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Memory RAM1 GB1 GB
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Internal storage8 GB8 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)Microsoft Windows Phone 8.1 with Lumia Denim
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Main camera
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Main camera5 MP13 MP
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Primary camera resolution2592 x 1944 pixels4128 x 3096 pixels
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Primary camera videovideo1080p@30fps
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Primary camera optics-Carl Zeiss optics
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Primary camera Autofocusautofocusautofocus
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Primary camera flash-LED flash
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Camera features-1/3'' sensor size
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Selfie camera
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Secondary cameraVGA camera-
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Selfie camera5 MP
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Selfie camera video-1080p
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic, MP3 ringtonesVibration; 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 HotspotYesYes
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WLAN DLNA-Yes
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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GPS Navigator-Beidou
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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 EmailPush Email
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, compass, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity4960 mAh3000 mAh
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Battery removableNon-removable-
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Talk time7 h-
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Talk time 2G-31 h 20 min
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Talk time 3G-23 h 40 min
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Standby time--
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Standby time 2G-936 h
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Standby time 3G-936 h
