Compare Karbonn A21 vs Micromax A100 vs Asus Zenfone Zoom ZX551ML

Summary
50
/100
49
/100
82
/100
Performance

Dual core

1.2 GHz, 512 MB RAM

Dual core

1 GHz, 512 MB RAM

Quad core

2.5 GHz, 4 GB RAM

Display

4.5" (Compact)

480x800, Avg sharpness

5" (Large)

480x854, Low sharpness

5.5" (Large)

Full HD, Very Sharp

Camera

5 MP (Main)

1.3 MP (Front)

5 MP (Main)

0.3 MP (Front)

13 MP (Main)

5 MP (Front)

Battery

1800 mAh

5 h talktime (2G)

2000 mAh

5 h talktime (2G)

3000 mAh

Storage

4 GB

32 GB (Expandable)

4 GB

32 GB (Expandable)

128 GB

128 GB (Expandable)

General
Operating System

Android v4 (Ice Cream Sandwich)

Android v4 (Ice Cream Sandwich)

Android v5.0 (Lollipop)

SIM Slot(s)

Dual SIM, GSM+GSM

Dual SIM, GSM+GSM

Single SIM, GSM

SIM Size

Micro

Performance
Basic Basic
Poor Poor
Very Good Very Good
Processor

Dual core, 1.2 GHz, Cortex A5, Chipset: Qualcomm MSM8225 Snapdragon S4 Play

Dual core, 1 GHz

Quad core, 2.5 GHz, Chipset: Intel Atom Z3590

Graphics Card

Adreno 203

Adreno 200

PowerVR G6430

RAM

512 MB

512 MB

4 GB

Storage
Very Good Very Good
Very Good Very Good
Best in Class Best in Class
Internal Memory

4 GB

4 GB

128 GB

Expandable Memory

Up to 32 GB

Up to 32 GB

Up to 128 GB

Display
Below Average Below Average
Good Good
Very Good Very Good
Screen Size

4.5 inches

5 inches

5.5 inches

Screen Resolution

480 x 800 pixels

480 x 854 pixels

Full HD (1080 x 1920 pixels)

Pixel Density

207 ppi

196 ppi

401 ppi

Display Type

TFT

LCD

IPS LCD

Camera
Good Good
Good Good
Outstanding Outstanding
Main Camera

5 MP, Auto focus

5 MP, Auto focus

13 MP, Auto focus, Optical image stabilization

Front Camera

1.3 MP

0.3 MP

5 MP

Flash

LED

LED

Dual-color LED

Video Recording

720x480 fps

1920x1080 @ 30 FPS

Zoom

Digital Zoom

Digital Zoom

Digital Zoom

Camera Features

Auto Flash, Continuos Shooting, Exposure compensation, Face detection, Geo tagging, High Dynamic Range mode (HDR), ISO control, Laser AF, Scenes, Touch to focus, White balance presets

Battery
Average Average
Good Good
Excellent Excellent
Capacity

1800 mAH, Li-ion

2000 mAH, Li-ion

3000 mAH, Li-Po, Non-removable

Talk Time

Up to 5 Hours(2G)

Up to 5 Hours(2G)

Stand By Time

Up to 200 Hours(2G)

Up to 180 Hours(2G)

Connectivity
Operating Frequency

GSM 1800 / 1900 / 900 MHz
UMTS 2100 MHz
SIM 2: GSM 1800 / 1900 / 900 MHz

GSM 1800 / 1900 / 900 MHz
UMTS 2100 / 900 MHz
SIM 2: GSM 1800 / 1900 / 900 MHz

GSM 1800 / 1900 / 850 / 900 MHz
UMTS 1900 / 2100 / 850 / 900 MHz
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 1800(band 9) / 850(band 18) / 850(band 19)

GPRS

Edge

3G

HSDPA 7.2 Mbit/s

HSDPA 42.2 Mbit/s, HSUPA 5.76 Mbit/s

4G

(supports Indian bands), LTE cat4 50 Mbit/s ↑ 150 Mbit/s ↓

Wi-Fi

Wi-Fi 802.11, b/g/n

Wi-Fi 802.11, b/g/n

Wi-Fi 802.11, a/ac/b/g/n, Mobile Hotspot, Wi-Fi Direct

Bluetooth

v2.1, A2DP

v3.0, A2DP

v4.0, EDR, A2DP

GPS

with A-GPS, Glonass

USB Connectivity

USB Port, USB 2.0, microUSB 2.0

USB Port, USB 2.0, microUSB

USB Port, Mass storage device, USB charging, microUSB 2.0

More Connectivity

Computer sync, NFC, OTA sync, Tethering,

Design
Compare Size
Compare Size
Compare Size
Touch Screen

Capacitive Touchscreen, Multi-touch

Capacitive Touchscreen, Multi-touch

Capacitive Touchscreen, Multi-touch

Weight

104 grams

168 grams

185 grams

Dimensions

112 x 60.5 x 11.5 mm

142.2 x 72.6 x 11.90 mm

158.9 x 78.8 x 11.9 mm

Colours

Multimedia
FM Radio

Loudspeaker

Audio Jack

3.5 mm

3.5 mm

3.5 mm

Price list

snapdeal.com

Rs. 4,444
   

flipkart.com

   
Rs. 37,999
expert reviews
customer reviews
Overall User Rating
★★★★★
★★★★★

4/5 based on 76 ratings

Sanjay Delhi
★★★★★
★★★★★
★★★★★
★★★★★
★★★★★
★★★★★

worth for the money.recommendable....

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★★★★★
★★★★★

3.4/5 based on 9 ratings

Sanjay Delhi
★★★★★
★★★★★
★★★★★
★★★★★
★★★★★
★★★★★

Indian brand is just growing and getting populerd so fast and soon... Great to see such kind phones from INDIAN brands in such a low price... Good Job MICROMAX Team.......

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