Realme 8 5G vs Vivo X21 UD comparison

Show Only Differences Highlight Differences	Realme 8 5G	Vivo X21 UD
key specs
Display	6.50-inch	6.28-inch
Processor	MediaTek Dimensity 700	Qualcomm Snapdragon 660
Front Camera	16-megapixel	12-megapixel
Rear Camera	48-megapixel + 2-megapixel + 2-megapixel	12-megapixel
RAM	4GB, 6GB, 8GB	6GB
Storage	64GB, 128GB	128GB
Battery Capacity	5000mAh	3200mAh
OS	Android 11	Android 8.1
Resolution	1080x2400 pixels	1080x2280 pixels
general
Brand	Realme	Vivo
Model	8 5G	X21 UD
Release date	April 21, 2021	March 1, 2018
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	162.50 x 74.80 x 8.50	154.50 x 74.80 x 7.40
Weight (g)	185.00	156.20
Battery capacity (mAh)	5000	3200
Fast charging	Proprietary	-
Colours	Supersonic Black, Supersonic Blue	Ruby Red, Aurora White, Black
display
Screen size (inches)	6.50	6.28
Touchscreen	Yes	Yes
Resolution	1080x2400 pixels	1080x2280 pixels
Aspect ratio	20:9	-
Pixels per inch (PPI)	405	-
hardware
Processor	octa-core	octa-core
Processor make	MediaTek Dimensity 700	Qualcomm Snapdragon 660
RAM	4GB, 6GB, 8GB	6GB
Internal storage	64GB, 128GB	128GB
Expandable storage	Yes	-
Expandable storage type	microSD	-
Expandable storage up to (GB)	1000	-
Dedicated microSD slot	Yes	-
camera
Rear camera	48-megapixel (f/1.8) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)	12-megapixel
No. of Rear Cameras	3	-
Rear autofocus	Yes	-
Rear flash	Yes	LED
Front camera	16-megapixel (f/2.1)	12-megapixel
No. of Front Cameras	1	-
Pop-Up Camera	No	-
software
Operating system	Android 11	Android 8.1
Skin	Realme UI 2.0	FunTouch 4.0
connectivity
Wi-Fi	Yes	Yes
Wi-Fi standards supported	802.11 a/b/g/n/ac	802.11 a/b/g/n/ac
GPS	Yes	Yes
Bluetooth	Yes, v 5.10	Yes, v 5.00
USB Type-C	Yes	-
FM	Yes	-
Number of SIMs	2	2
Active 4G on both SIM cards	Yes	-
USB OTG	-	Yes
Headphones	-	3.5mm
sim 1
SIM Type	Nano-SIM	Micro-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
5G	Yes	-
sim 2
SIM Type	Nano-SIM	Micro-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
sensors
Face unlock	Yes	-
Fingerprint sensor	Yes	-
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	-
Ambient light sensor	Yes	Yes
Gyroscope	Yes	Yes