Screen size
C83Winner: 6.8"+7.4%
U16.3"
Quick verdict
C83 leads the measured specs 13-5.
Measured wins
C83
13
spec wins
Overall winner
Ties
5
equal specs
U1
5
spec wins
Screen size
Technology
C83
GSM / HSPA / LTE / 5G
U1
GSM / HSPA / LTE
2G bands
C83
GSM 850 / 900 / 1800 / 1900
U1
GSM 850 / 900 / 1800 / 1900
3G bands
C83
HSDPA 850 / 900 / 2100
U1
HSDPA 850 / 900 / 2100
4G bands
C83
1, 3, 5, 8, 28, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
U1
1, 3, 5, 8, 38, 40, 41
5G bands
C83
1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA
U1
-
Speed
C83
HSPA, LTE, 5G
U1
HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps
Announced
C83
2026, March 06
U1
2018, November. Released 2018, December
Status
C83
Available. Released 2026, March 07
U1
Discontinued
Dimensions
C83
166.3 x 78.1 x 8.4 mm (6.55 x 3.07 x 0.33 in)
U1
157 x 74 x 8 mm (6.18 x 2.91 x 0.31 in)
Weight
C83
212 g (7.48 oz)
U1
168 g (5.93 oz)
Build
C83
Glass front, plastic frame, plastic back
U1
Glass front (Gorilla Glass 3), plastic back, plastic frame
SIM
C83
Nano-SIM + Nano-SIM
U1
Nano-SIM + Nano-SIM
Other
C83
IP64 dust tight and water resistant (water splashes) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
U1
-
Type
C83
IPS LCD, 144Hz, 900 nits (peak)
U1
IPS LCD
Size
C83
6.8 inches, 113.0 cm2 (~87.0% screen-to-body ratio)
U1
6.3 inches, 97.4 cm2 (~83.9% screen-to-body ratio)
Resolution
C83
720 x 1570 pixels, 19.5:9 ratio (~254 ppi density)
U1
1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
Protection
C83
-
U1
Corning Gorilla Glass 3
OS
C83
Android 16, Realme UI 7.0
U1
Android 8.1 (Oreo), upgradable to Android 9.0 (Pie), ColorOS 6
Chipset
C83
Mediatek Dimensity 6300 (6 nm)
U1
Mediatek MT6771 Helio P70 (12 nm)
CPU
C83
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
U1
Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
GPU
C83
Mali-G57 MC2
U1
Mali-G72 MP3
Card slot
C83
microSDXC (uses shared SIM slot)
U1
microSDXC (dedicated slot)
Internal
C83
64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
U1
32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM
Other
C83
eMMC 5.1
U1
eMMC 5.1
Single
C83
13 MP, f/2.2, (wide)
U1
-
Features
C83
LED flash, HDR, panorama
U1
LED flash, HDR, panorama
Video
C83
1080p@30fps
U1
1080p@30fps, 720p@90fps
Dual
C83
-
U1
13 MP, f/2.2, AF Auxiliary lens
Single
C83
5 MP, f/2.2, (wide)
U1
25 MP, f/2.0, 1/2.8", 0.9µm
Video
C83
1080p@30fps
U1
1080p@30fps
Features
C83
-
U1
HDR
Loudspeaker
C83
Yes, with stereo speakers
U1
Yes
3.5mm jack
C83
Yes
U1
Yes
Other
C83
24-bit/192kHz Hi-Res audio
U1
-
WLAN
C83
Wi-Fi 802.11 a/b/g/n/ac, dual-band
U1
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
C83
5.3, A2DP, LE
U1
4.2, A2DP, LE
Positioning
C83
GPS, GALILEO, GLONASS, QZSS, BDS
U1
GPS, GLONASS
NFC
C83
No
U1
No
Radio
C83
No
U1
FM radio
USB
C83
USB Type-C 2.0, OTG
U1
microUSB 2.0, OTG
Sensors
C83
Accelerometer, gyro, proximity, compass
U1
Fingerprint (rear-mounted), accelerometer, proximity, compass
Type
C83
Si/C Li-Ion 7000 mAh
U1
Li-Ion 3500 mAh, non-removable
Charging
C83
15W wired Reverse wired Bypass charging
U1
10W wired
Colors
C83
Blooming Purple, Sprouting Green
U1
Ambitious Black, Brave Blue, Fiery Gold
Price
C83
About 130 EUR
U1
About 130 EUR
Models
C83
-
U1
RMX1831, RMX1833