Phone Comparison - Karbonn A21 vs Acer Iconia Tab B1-A71

Karbonn A21
karbonn a21
Acer Iconia Tab B1-A71
acer iconia tab b1-a71
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general General Info

Manufacturer Karbonn Acer
Announced 2012 January 2013
Status Available Available - January 2013
Colors Pearl White Black
Form Factor Candybar Candybar
Dimension - 197.4 x 128.5 x 11.3 mm
(7.77 x 5.06 x 0.44 in)
Weight - 320 g (11.29 oz)
2G Network GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 N/A
3G Network HSDPA 2100 -
4G Network - -
Messaging SMS, MMS, Push Mail, EMail, IM , Push Mail, EMail, IM

hardware Hardware and OS

OS Android OS, v4.0 (Ice Cream Sandwich) Android OS, v4.1 (Jelly Bean)
Processor Dual-core 1.2 GHz [Similar] Dual-core 1.2 GHz, Mediatek MT8317 [Similar]
GPU - PowerVR SGX531u [Similar]
RAM 512 MB [Browse Similar] 512 MB [Browse Similar]
Internal Memory 4 GB 8/16 GB
External Memory microSD, up to 32 GB microSD, up to 32 GB

display Display

Type TFT capacitive touchscreen TFT capacitive touchscreen
Colors 256K colors 256K colors
Size 4.5 inches [Similar] 7.0 inches [Similar]
Resolution 480 x 800 pixels (207 ppi) [Similar] 600 x 1024 pixels (170 ppi)
Screen-to-Body Ratio - 54.07%
Multi-Touch yes yes

multimedia Multimedia

3.5mm Jack yes yes
Radio No No
Games Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes

camera Camera

Rear Camera 5 MP, 2592х1944 pixels [Similar] VGA, 640x480 pixels [Similar]
Flash LED flash No
Features Auto focus, Geo-tagging, Face Detection -
Video Yes Yes
Front Camera Yes, 1.3 MP [Similar] No [Similar]

connectivity Connectivity and Data Rate

GPRS Yes No
Edge Yes No
3G HSDPA, 7.2 Mbps -
Bluetooth Yes, v2.1 with A2DP Yes, v4.0
Wi-Fi Wi-Fi 802.11 b/g/n Wi-Fi 802.11 b/g/n
USB Yes, microUSB v2.0 Yes, microUSB v2.0
GPS Yes, with A-GPS support Yes
Browser HTML HTML5

memory User Memory

Internal 4 GB, 512 MB RAM 8/16 GB, 512 MB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 32 GB

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor present proximity sensor not present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present
NFC NFC not supported NFC not supported

battery Battery

Type Li-Ion Battery Non-removable, Li-Po Battery
Capacity 1800 mAh 2710 mAh
Stand by Up to 200 h -
Talk Time Up to 5 h -