Karbonn K 4 vs Lemon Mobiles B639

Display

Display size

2.4 inches
2.6 inches

Resolution

240 x 320 pixels
 

Pixel density

167 ppi
 

Screen-to-body

30.58 %
 

Hardware & Performance

Storage expansion

microSDHC up to 8 GB
microSDHC up to 16 GB

Battery

Capacity

2200 mAh
3000 mAh

Type

User replaceable
Li - Polymer, User replaceable

Camera

Rear

Single camera
Single camera

Main camera

1.3 megapixels
1.3 megapixels

Design

Dimensions

4.59 x 1.97 x 0.58 inches (116.5 x 50 x 14.8 mm)
4.33 x 1.85 x 0.54 inches (110 x 47 x 13.75 mm)

Weight

4.09 oz (116 g)
the average is 6.1 oz (173 g)
3.35 oz (95 g)
the average is 6.1 oz (173 g)

Features

Numeric keypad, Soft keys, D-Pad
Numeric keypad, Soft keys, D-Pad

Cellular

Dual SIM

Yes
Yes

Multimedia

Headphones

 
3.5mm jack

Connectivity & Features

Bluetooth

Yes
Yes

USB

Yes
Yes

Features

 
Mass storage device

Other

Tethering
Tethering, Computer sync

Phone features

Notifications

Music ringtones (MP3, MIDI), Polyphonic ringtones (64 voices), Vibration, Silent mode
Music ringtones (MP3, WAV, AMR, MIDI), Polyphonic ringtones, Vibration, Silent mode

Other features

Voice recording
Voice recording
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