Oppo A55 vs Samsung Galaxy A21 comparison

Show Only Differences Highlight Differences	Oppo A55	Samsung Galaxy A21
key specs
Display	6.51-inch	6.50-inch
Processor	MediaTek Helio G35	-
Front Camera	16-megapixel	13-megapixel
Rear Camera	50-megapixel + 2-megapixel + 2-megapixel	16-megapixel + 8-megapixel + 2-megapixel + 2-megapixel
RAM	4GB, 6GB	3GB
Storage	64GB, 128GB	32GB
Battery Capacity	5000mAh	4000mAh
OS	Android 11	Android 10
Resolution	720x1600 pixels	-
general
Brand	Oppo	Samsung
Model	A55	Galaxy A21
Release date	October 1, 2021	April 8, 2020
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	163.60 x 75.70 x 8.40	-
Weight (g)	193.00	-
Battery capacity (mAh)	5000	4000
Fast charging	Proprietary	Proprietary
Colours	Rainbow Blue, Starry Black	Black
Removable battery	-	No
Wireless charging	-	No
display
Refresh Rate	60 Hz	-
Screen size (inches)	6.51	6.50
Touchscreen	Yes	Yes
Resolution	720x1600 pixels	-
Aspect ratio	20:9	-
hardware
Processor	dual-core	-
Processor make	MediaTek Helio G35	MediaTek Helio P35 (MT6765)
RAM	4GB, 6GB	3GB
Internal storage	64GB, 128GB	32GB
Expandable storage	Yes	Yes
Expandable storage type	microSD	microSD
Expandable storage up to (GB)	256	512
Dedicated microSD slot	Yes	-
camera
Rear camera	50-megapixel (f/1.8) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)	16-megapixel + 8-megapixel + 2-megapixel + 2-megapixel
No. of Rear Cameras	3	-
Rear autofocus	Yes	Yes
Rear flash	Yes	Yes
Front camera	16-megapixel	13-megapixel
No. of Front Cameras	1	-
Pop-Up Camera	-	No
software
Operating system	Android 11	Android 10
Skin	ColorOS 11.1	-
connectivity
Wi-Fi	Yes	Yes
Wi-Fi standards supported	802.11 a/b/g/n/ac	-
GPS	Yes	Yes
Bluetooth	Yes, v 5.00	Yes
USB OTG	Yes	-
USB Type-C	Yes	-
Headphones	3.5mm	-
Number of SIMs	2	-
sim 1
SIM Type	Nano-SIM	-
GSM/CDMA	GSM	-
3G	Yes	-
4G/ LTE	Yes	-
sim 2
SIM Type	Nano-SIM	-
GSM/CDMA	GSM	-
3G	Yes	-
4G/ LTE	Yes	-
sensors
Fingerprint sensor	Yes	Yes
Compass/ Magnetometer	Yes	-
Proximity sensor	Yes	-
Accelerometer	Yes	-
Ambient light sensor	Yes	-