Screen size
C100iWinner: 6.8"+4.4%
C316.5"
Quick verdict
C100i leads the measured specs 8-5.
Measured wins
C100i
8
spec wins
Overall winner
Ties
9
equal specs
C31
5
spec wins
Screen size
Technology
C100i
GSM / HSPA / LTE
C31
GSM / HSPA / LTE
2G bands
C100i
GSM 850 / 900 / 1800 / 1900
C31
GSM 850 / 900 / 1800 / 1900
3G bands
C100i
HSDPA 850 / 900 / 2100
C31
HSDPA 850 / 900 / 2100
4G bands
C100i
1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
Main camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
C31
1, 3, 5, 8, 38, 40, 41
Speed
C100i
HSPA, LTE
C31
HSPA, LTE
Announced
C100i
2026, April 30
C31
2022, March 25
Status
C100i
Released May 7, 2026
C31
Available. Released 2022, March 31
Dimensions
C100i
166.5 x 78.2 x 8.4 mm (6.56 x 3.08 x 0.33 in)
C31
164.7 x 76.1 x 8.4 mm (6.48 x 3.00 x 0.33 in)
Weight
C100i
208 g (7.34 oz)
C31
197 g (6.95 oz)
Build
C100i
Glass front, plastic frame, plastic back
C31
Glass front, plastic frame, plastic back
SIM
C100i
Nano-SIM + Nano-SIM
C31
Nano-SIM + Nano-SIM
Other
C100i
IP64 dust tight and water resistant (water splashes) Drop resistant up to 2m MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
C31
-
Type
C100i
IPS LCD, 120Hz
C31
IPS LCD, 400 nits
Size
C100i
6.8 inches, 113.0 cm2 (~86.8% screen-to-body ratio)
C31
6.5 inches, 102.0 cm2 (~81.4% screen-to-body ratio)
Resolution
C100i
720 x 1570 pixels, 19.5:9 ratio (~254 ppi density)
C31
720 x 1600 pixels, 20:9 ratio (~270 ppi density)
Protection
C100i
Panda MN228 or Corning Gorilla Glass
C31
Panda Glass
OS
C100i
Android 16
C31
Android 11, Realme UI 2.0
Chipset
C100i
Unisoc T7250 (12 nm)
C31
Unisoc Tiger T612 (12 nm)
CPU
C100i
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
C31
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU
C100i
Mali-G57 MP1
C31
Mali-G57
Card slot
C100i
microSDXC
C31
microSDXC (dedicated slot)
Internal
C100i
64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
C31
32GB 3GB RAM, 64GB 4GB RAM
Other
C100i
eMMC 5.1
C31
UFS 2.2
Single
C100i
8 MP, f/2.0, (wide), AF
C31
-
Features
C100i
LED flash, HDR, panorama
C31
LED flash, HDR, panorama
Video
C100i
1080p@30fps
C31
1080p@30fps
Triple
C100i
-
C31
13 MP, f/2.2, 25mm (wide), 1/3.06", 1.12µm, AF 2 MP (macro) Auxiliary lens
Single
C100i
5 MP, f/2.2, (wide)
C31
5 MP, f/2.2, 27mm (wide), 1/5.0", 1.12µm
Video
C100i
720p@30fps
C31
720p@30fps
Features
C100i
-
C31
HDR
Loudspeaker
C100i
Yes
C31
Yes
3.5mm jack
C100i
Yes
C31
Yes
WLAN
C100i
Wi-Fi 802.11 a/b/g/n/ac, dual-band
C31
Wi-Fi 802.11 b/g/n
Bluetooth
C100i
5.2, A2DP, LE
C31
5.0, A2DP, LE
Positioning
C100i
GPS, GALILEO, GLONASS, BDS
C31
GPS, GLONASS, GALILEO, BDS
NFC
C100i
No
C31
No
Radio
C100i
Unspecified
C31
No
USB
C100i
USB Type-C 2.0, OTG
C31
microUSB 2.0
Sensors
C100i
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
C31
Fingerprint (side-mounted), accelerometer, gyro, proximity
Type
C100i
Si/C Li-Ion 7000 mAh
C31
5000 mAh
Charging
C100i
15W wired, PD, QC Reverse wired
C31
10W wired
Colors
C100i
Dawn Purple, Dusk Gray
C31
Light Silver, Dark Green
Models
C100i
RMX5377
C31
RMX3501
Price
C100i
About 110 EUR
C31
About 150 EUR