Acer Iconia B1-721 vs Amazon Kindle Fire HDX 8.9
Acer Iconia B1-721
Amazon Kindle Fire HDX 8.9
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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
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4G network-LTE
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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HSPA+ speed-HSPA+
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LTE speed-LTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-12013-9
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Status2014-12013-11
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Design
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SIMYesMicro-SIM
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Height199 mm231 mm
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Width122.3 mm158 mm
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Thickness11.4 mm7.8 mm
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Weight323 g374 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 inches8.9 inches
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Resolution600 x 1024 pixels2560 x 1600 pixels
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Pixel density170 ppi339 ppi
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Display colors-16777216
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Hardware
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CPUDual-core 1.3 GHzQuad-core 2.2 GHz Krait 400
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ChipsetMediatek MT8312Qualcomm Snapdragon 800
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GPUMali-400Adreno 330
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Internal storage16 GB16, 32, 64 GB
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Memory RAM1 GB2 GB
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Memory cardmicroSD
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Memory card max32 GB-
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OS
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OSAndroid OS, v4.2 (Jelly Bean)Android OS, v4.x (Jelly Bean)
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Main camera
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Main camera8 MP
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Primary camera resolution640 x 480 pixels3264 x 2448 pixels
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Primary camera videovideovideo
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Selfie camera
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Secondary cameraNo-
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Selfie camera video-720p
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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, Polyphonic, MP3 ringtones
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Multimedia
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RadioNoNo
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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
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0microUSB 2.0
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BluetoothYesYes
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GPSYesYes, with A-GPS
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Features
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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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Browser
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HTMLHTML5HTML5 (Amazon Silk)
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity2955 mAh-
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Battery removable-Non-removable
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Talk time-12 h
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Standby time--
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