HMD 102 4G vs Karbonn K21 comparison

Show Only Differences Highlight Differences	HMD 102 4G	Karbonn K21
key specs
Display	2.00-inch	2.20-inch
Front Camera	No	No
Rear Camera	Unspecified	1.3-megapixel
Battery Capacity	1000mAh	1000mAh
OS	Series 30+	Proprietary
Processor	-	one-core
Resolution	-	176x220 pixels
general
Brand	HMD	Karbonn
Model	102 4G	K21
Release date	September 11, 2025	December 1, 2011
Launched in India	Yes	-
Form factor	Bar	Bar
Dimensions (mm)	118.20 x 50.20 x 14.30	111.50 x 47.30 x 14.30
Weight (g)	83.50	80.00
IP rating	IP52	-
Battery capacity (mAh)	1000	1000
Removable battery	Yes	Yes
Colours	Blue, Purple, Red	Coffee, Grey
Alternate names	-	K21 Radio jockey
display
Screen size (inches)	2.00	2.20
Touchscreen	No	No
Resolution	-	176x220 pixels
camera
Rear camera	Unspecified	1.3-megapixel
No. of Rear Cameras	1	-
Rear flash	LED	No
Front camera	No	No
software
Operating system	Series 30+	Proprietary
connectivity
Bluetooth	Yes	Yes
USB Type-C	Yes	-
Headphones	3.5mm	-
Active 4G on both SIM cards	Yes	-
Wi-Fi	-	No
GPS	-	No
NFC	-	No
Infrared	-	No
USB OTG	-	No
FM	-	Yes
Number of SIMs	-	2
Wi-Fi Direct	-	No
Mobile High-Definition Link (MHL)	-	No
hardware
Processor	-	one-core
Expandable storage	-	Yes
Expandable storage type	-	microSD
Expandable storage up to (GB)	-	8
sim 1
SIM Type	-	Regular
GSM/CDMA	-	GSM
3G	-	No
4G/ LTE	-	No
sim 2
SIM Type	-	Regular
GSM/CDMA	-	GSM
3G	-	No
4G/ LTE	-	No
sensors
Compass/ Magnetometer	-	No
Proximity sensor	-	No
Accelerometer	-	No
Ambient light sensor	-	No
Gyroscope	-	No
Barometer	-	No
Temperature sensor	-	No

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