Samsung Galaxy M21 2021 vs Realme C75x
Product
Price
170 USD
170 USD
Status
Discontinued
Available
Brand
Samsung Mobile
Realme Mobiles
Model No
Samsung Galaxy M21 2021
Realme C75x
Launch Date
2021, July 26
2025, March 08
Technology
GSM / HSPA / LTE
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1900 / 2100
HSDPA 850 / 900 / 2100
4G bands
1, 3, 5, 7, 8, 20, 38, 40, 41
1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Speed
HSPA 42.2/5.76 Mbps, LTE-A
HSPA, LTE
Dimensions
159 x 75.1 x 9 mm (6.26 x 2.96 x 0.35 in)
165.7 x 76.2 x 8 mm (6.52 x 3.00 x 0.31 in)
Weight
192 g (6.77 oz)
196 g (6.91 oz)
Build
Glass front, plastic back, plastic frame
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 2m for 60 hours)
Drop resistant up to 1.8m
MIL-STD-810H compliant*
* does not guarantee ruggedness or use in extreme conditions
SIM
Dual SIM (Nano-SIM, dual stand-by)
SIM Nano-SIM + Nano-SIM
Colors
Charcoal Black, Arctic Blue
Coral Pink, Oceanic Blue
Type
Super AMOLED, 420 nits (peak)
IPS LCD, 120Hz, 500 nits (typ), 625 nits (HBM)
Size
6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio)
6.67 inches, 107.2 cm2 (~84.9% screen-to-body ratio)
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
720 x 1604 pixels, 20:9 ratio (~264 ppi density)
OS
Android 11, One UI 3.1 Core
Android 15, Realme UI 6.0
Chipset
Android 11, One UI 3.1 Core
Mediatek Helio G81 Ultra (12 nm)
CPU
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU
Mali-G72 MP3
Mali-G52 MC2
RAM
4GB/6GB
8GB
Storage
64GB/128GB
128GB
Card Slot
microSDXC (dedicated slot)
microSDXC (dedicated slot)
Lens 1
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
50 MP, f/1.8, (wide), 1/2.88", PDAF
Lens 2
8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm
Lens 3
5 MP, f/2.2, (depth)
Features
LED flash, panorama, HDR
LED flash, panorama
Video
4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS
1080p@30fps
Lens 1
20 MP, f/2.2, 26mm (wide)
5 MP, f/2.2, (wide), 1/5"
Features
HDR
Panorama
Video
1080p@30fps
1080p@30fps
Capacity
Li-Po 6000 mAh, non-removable
5600 mAh
Charging
Fast charging 15W
45W wired, 100% in 90 min
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (side-mounted), accelerometer, proximity, compass
Circle to Search
Loudspeaker
Yes
Yes
3.5mm jack
Yes
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
5.0, A2DP, LE
5.0, A2DP, LE
GPS
Yes, with A-GPS, GLONASS, GALILEO, BDS
GPS, GALILEO, GLONASS, QZSS, BDS
NFC
No
Radio
FM radio, RDS, recording
USB
USB Type-C 2.0
USB Type-C 2.0