Screen size
C21Y6.5"
C83Winner: 6.8"+4.4%
Quick verdict
C83 leads the measured specs 13-3.
Measured wins
C21Y
3
spec wins
Ties
7
equal specs
C83
13
spec wins
Overall winner
Screen size
Technology
C21Y
GSM / HSPA / LTE
C83
GSM / HSPA / LTE / 5G
2G bands
C21Y
GSM 850 / 900 / 1800 / 1900
C83
GSM 850 / 900 / 1800 / 1900
3G bands
C21Y
HSDPA 850 / 900 / 2100
C83
HSDPA 850 / 900 / 2100
4G bands
C21Y
1, 3, 5, 8, 38, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
C83
1, 3, 5, 8, 28, 40, 41
Speed
C21Y
HSPA, LTE
C83
HSPA, LTE, 5G
5G bands
C21Y
-
C83
1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA
Announced
C21Y
2021, June 21
C83
2026, March 06
Status
C21Y
Available. Released 2021, July 02
C83
Available. Released 2026, March 07
Dimensions
C21Y
164.5 x 76 x 9.1 mm (6.48 x 2.99 x 0.36 in)
C83
166.3 x 78.1 x 8.4 mm (6.55 x 3.07 x 0.33 in)
Weight
C21Y
200 g (7.05 oz)
C83
212 g (7.48 oz)
Build
C21Y
Glass front, plastic back, plastic frame
C83
Glass front, plastic frame, plastic back
SIM
C21Y
Nano-SIM + Nano-SIM
C83
Nano-SIM + Nano-SIM
Other
C21Y
-
C83
IP64 dust tight and water resistant (water splashes) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
Type
C21Y
IPS LCD, 400 nits (typ)
C83
IPS LCD, 144Hz, 900 nits (peak)
Size
C21Y
6.5 inches, 102.0 cm2 (~81.6% screen-to-body ratio)
C83
6.8 inches, 113.0 cm2 (~87.0% screen-to-body ratio)
Resolution
C21Y
720 x 1600 pixels, 20:9 ratio (~270 ppi density)
C83
720 x 1570 pixels, 19.5:9 ratio (~254 ppi density)
OS
C21Y
Android 10/ Android 11
C83
Android 16, Realme UI 7.0
Chipset
C21Y
Unisoc T610 (12 nm)
C83
Mediatek Dimensity 6300 (6 nm)
CPU
C21Y
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
C83
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
C21Y
Mali-G52 MP2
C83
Mali-G57 MC2
Card slot
C21Y
microSDXC (dedicated slot)
C83
microSDXC (uses shared SIM slot)
Internal
C21Y
32GB 3GB RAM, 64GB 4GB RAM
C83
64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
Other
C21Y
eMMC 5.1
C83
eMMC 5.1
Dual
C21Y
13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF 2 MP (macro) Auxiliary lens
C83
-
Features
C21Y
LED flash, HDR, panorama
C83
LED flash, HDR, panorama
Video
C21Y
1080p@30fps
C83
1080p@30fps
Single
C21Y
-
C83
13 MP, f/2.2, (wide)
Single
C21Y
5 MP, f/2.2, (wide), 1/5.0", 1.12µm
C83
5 MP, f/2.2, (wide)
Features
C21Y
HDR, panorama
C83
-
Video
C21Y
1080p@30fps
C83
1080p@30fps
Loudspeaker
C21Y
Yes
C83
Yes, with stereo speakers
3.5mm jack
C21Y
Yes
C83
Yes
Other
C21Y
-
C83
24-bit/192kHz Hi-Res audio
WLAN
C21Y
Wi-Fi 802.11 b/g/n
C83
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
C21Y
5.0, A2DP, LE
C83
5.3, A2DP, LE
Positioning
C21Y
GPS, GLONASS, BDS
C83
GPS, GALILEO, GLONASS, QZSS, BDS
NFC
C21Y
No
C83
No
Radio
C21Y
Unspecified
C83
No
USB
C21Y
microUSB 2.0, OTG
C83
USB Type-C 2.0, OTG
Sensors
C21Y
Fingerprint (rear-mounted), accelerometer, proximity, compass
C83
Accelerometer, gyro, proximity, compass
Type
C21Y
5000 mAh
C83
Si/C Li-Ion 7000 mAh
Charging
C21Y
Reverse wired
C83
15W wired Reverse wired Bypass charging
Colors
C21Y
Cross Black, Cross Blue
C83
Blooming Purple, Sprouting Green
Models
C21Y
RMX3261, RMX3263
C83
-
Price
C21Y
About 130 EUR
C83
About 130 EUR