Home
›
Phones
›
Comparison

Karbonn K451M vs Lemon Mobiles B639

Rivals

Karbonn K451M

Posted: 04 Sep 2011
Market Status: Released

Lemon Mobiles B639

Posted: 07 Feb 2012
Market Status: Released

Add phone to compare

Design
Device type	Feature phone	Feature phone
Form factor	Candybar	Candybar
Dimensions	4.02 x 1.77 x 0.57 inches (102 x 45 x 14.5 mm)	4.33 x 1.85 x 0.54 inches (110 x 47 x 13.75 mm)
Weight	2.82 oz (80 g) the average is 4.4 oz (125 g)	3.35 oz (95 g) the average is 4.4 oz (125 g)
Design features	Numeric keypad, Soft keys, D-Pad (2)	Numeric keypad, Soft keys, D-Pad

Display
Physical size	2.0 inches	2.6 inches
Resolution	176 x 220 pixels
Pixel density Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is.	141 ppi
Colors	262 144

Battery
Talk time	4.00 hours the average is 10 h (623 min)	20.00 hours the average is 10 h (623 min)
Stand-by time	12.5 days (300 hours) the average is 18 days (434 h)	45.0 days (1080 hours) the average is 18 days (434 h)
Capacity	1100 mAh	3000 mAh
Type		Li - Polymer

Hardware
Storage expansion	microSD, microSDHC	microSD, microSDHC up to 16 GB

Camera
Camera	0.1 megapixels CIF (288x352)	1.3 megapixels
Camcorder	Yes

specifications continue after the ad

Multimedia
Music player
Supported formats	MP3, WAV, AMR, MIDI	MP3, WAV, AMR, MIDI
Video playback
Supported formats	AVI, 3GP	MPEG4, 3GP
Radio	FM, Internal antenna	FM

Internet browsing
Browser	supports: supports: WAP	supports: supports: WAP
Built-in online services support		Facebook, Twitter

Technology
GSM	900, 1800 MHz	900, 1800 MHz
Data	GPRS	GPRS
Multiple SIM cards	2 slots	2 slots

Phone features
Phonebook	1000 entries	500 entries
Organizer	Calendar, Alarm, To-Do, Flashlight, Calculator, Currency converter, World clock, Stopwatch, Health management	Calendar, Alarm, Flashlight, Calculator, World clock, Stopwatch
Messaging	SMS (500 messages), MMS, Predictive text input	SMS (200 messages), MMS
Instant Messaging		Yes
Games	Yes

Connectivity
Bluetooth	Yes	Yes
USB		Yes
Features		Mass storage device
Headphones connector		3.5mm
Other		Tethering, Computer sync

Other features
Notifications	Music ringtones (MP3), Polyphonic ringtones (64 voices), Vibration, Speakerphone	Music ringtones (MP3, WAV, AMR, MIDI), Polyphonic ringtones, Vibration, Silent mode
Sensors	Accelerometer
Other		Voice recording

Nokia Lumia 925
- Announced: 14 May 2013
- OS: Windows Phone 8
- Hardware: Dual core, 1500 MHz, Krait, 1024 MB RAM
- Display: 4.5 inches, 768 x 1280 pixels, Capacitive Touchscreen
- Camera 8.7 megapixels, 1920x1080 (1080p HD) video
- Battery: 18.3 hours of Talk Time, 432 hours of Stand-by
- Technology: GSM (850 900 1800 1900)
- Data: LTE Cat3 Downlink 100 Mbit/s LTE Cat3/4 Uplink 50 Mbit/s HSDPA+ (4G) 42.2 Mbit/s HSUPA 5.76 Mbit/s
BlackBerry Q5
- Announced: 4 days ago
- OS: BlackBerry
Sony Xperia ZR
- Announced: 4 days ago
- OS: Android 4.1
- Hardware: Quad core, 1500 MHz, 2048 MB RAM
- Display: 4.5 inches, 720 x 1280 pixels, Capacitive Touchscreen
- Camera 13 megapixels, 1920x1080 (1080p HD) video
- Technology: GSM (850 900 1800 1900)
- Data: HSPA (unspecified) UMTS EDGE GPRS
Nokia Lumia 928
- Announced: 10 May 2013
- OS: Windows Phone 8
- Hardware: Dual core, 1500 MHz, Krait, 1024 MB RAM
- Display: 4.5 inches, 768 x 1280 pixels, Capacitive Touchscreen
- Camera 8.7 megapixels, 1920x1080 (1080p HD) video
- Battery: 16.2 hours of Talk Time, 606 hours of Stand-by
- Technology: GSM (850 900 1800 1900), CDMA (800 1900)
- Data: LTE Cat3 Downlink 100 Mbit/s LTE Cat3/4 Uplink 50 Mbit/s HSDPA+ (4G) 42.2 Mbit/s HSUPA 5.76 Mbit/s UMTS EDGE GPRS EV-DO Rev.A
Vertu Ti
- Posted: 09 May 2013
- OS: Android 4.0
- Hardware: Dual core, 1700 MHz, 1024 MB RAM
- Display: 3.7 inches, 480 x 800 pixels, Capacitive Touchscreen
- Camera 8 megapixels, 1920x1080 (1080p HD) video
- Battery: 7.3 hours of Talk Time, 200 hours of Stand-by
- Technology: GSM (850 900 1800 1900)
- Data: HSDPA+ (4G) 42.2 Mbit/s HSUPA 5.76 Mbit/s EDGE GPRS
Nokia Asha 501
- Announced: 09 May 2013
- Hardware: 64 MB RAM
- Display: 3.0 inches, 240 x 320 pixels, Capacitive Touchscreen
- Camera 3.2 megapixels, 320x240 (QVGA) video
- Battery: 17 hours of Talk Time, 1152 hours of Stand-by
- Technology: GSM (900 1800)
- Data: EDGE GPRS
Samsung Galaxy Core
- Announced: 06 May 2013
- OS: Android 4.1
- Hardware: Dual core, 1200 MHz, 1024 MB RAM
- Display: 4.3 inches, 480 x 800 pixels, Capacitive Touchscreen
- Camera 5 megapixels, 720x480 (DVD) video
- Technology: GSM (850 900 1800 1900)
- Data: HSPA (unspecified) HSUPA 5.76 Mbit/s UMTS EDGE GPRS
Samsung Galaxy Tab 3
- Announced: 29 Apr 2013
- OS: Android 4.1
- Hardware: Dual core, 1200 MHz, 1024 MB RAM
- Display: 1024 x 600 pixels, Capacitive Touchscreen
- Camera 3 megapixels
- Technology: GSM (850 900 1800 1900)
- Data: HSDPA+ (4G) 21.1 Mbit/s HSUPA 5.76 Mbit/s UMTS EDGE GPRS