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Karbonn A21
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Phone Insight
Full Specifications October 20, 2026
Karbonn A21 Android 4.0
Karbonn · 2012

Karbonn A21

Karbonn A21 Android smartphone. Announced 2012. Features 4.5″ display, 5 MP primary camera, 1.3 MP front camera, 1800 mAh battery, 4 GB storage, 512 MB RAM.

Display 4.5"
RAM 512 GB
Storage 4GB 512MB RAM storage, microSDHC slot
Camera 5 MP
Battery 1800 mAh
OS Android 4.0

Launch

Announced 2012
Status Discontinued

Platform

OS Android 4.0 (Ice Cream Sandwich)
CPU Dual-core 1.2 GHz

Display

Type TFT, 256K colors
Size 4.5 inches, 57.6 cm 2
Resolution 480 x 800 pixels, 5:3 ratio (~207 ppi density)

Memory

Card slot microSDHC (dedicated slot)
Internal 4GB 512MB RAM

Main Camera

Single 5 MP, AF
Features LED flash
Video Yes

Selfie camera

Single 1.3 MP

Body

Dimensions -
Weight -
SIM Dual SIM (Mini-SIM)

Battery

Type Li-Ion 1800 mAh, removable
Stand-by Up to 200 h
Talk time Up to 5 h

Sound

Loudspeaker Yes
3.5mm jack Yes

Comms

WLAN Wi-Fi 802.11 b/g/n
Bluetooth 2.1, A2DP
Positioning GPS
NFC No
Radio No
USB microUSB 2.0

Network

Technology GSM / HSPA
2G bands GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 2100
Speed HSPA 7.2/0.384 Mbps

Features

Sensors Accelerometer, proximity

Misc

Colors Pearl White
SAR EU 0.44 W/kg (head)
Phone Insight phoneinsight.org/ Printed October 20, 2026

For live pricing, photos, and comparisons, visit phoneinsight.org/phones/karbonn-a21/

In depth

Full specifications

Announced 2012
Status Discontinued
OS Android 4.0 (Ice Cream Sandwich)
CPU Dual-core 1.2 GHz
Type TFT, 256K colors
Size 4.5 inches, 57.6 cm 2
Resolution 480 x 800 pixels, 5:3 ratio (~207 ppi density)
Card slot microSDHC (dedicated slot)
Internal 4GB 512MB RAM
Single 5 MP, AF
Features LED flash
Video Yes
Single 1.3 MP
Dimensions -
Weight -
SIM Dual SIM (Mini-SIM)
Type Li-Ion 1800 mAh, removable
Stand-by Up to 200 h
Talk time Up to 5 h
Loudspeaker Yes
3.5mm jack Yes
WLAN Wi-Fi 802.11 b/g/n
Bluetooth 2.1, A2DP
Positioning GPS
NFC No
Radio No
USB microUSB 2.0
Technology GSM / HSPA
2G bands GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 2100
Speed HSPA 7.2/0.384 Mbps
Sensors Accelerometer, proximity
Colors Pearl White
SAR EU 0.44 W/kg (head)
Price About 130 EUR
PhoneInsight Benchmark
38.3/100
Entry-level

A specs-derived composite score, not a lab benchmark -- useful for ranking and comparison.

Processor 37.5
Display 51.5
Camera 33.2
Battery 35.6
1,511,209 hitsTotal views
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