Screen size
C100xWinner: 6.8"+4.4%
C256.5"
Quick verdict
C100x leads the measured specs 11-5.
Measured wins
C100x
11
spec wins
Overall winner
Ties
6
equal specs
C25
5
spec wins
Screen size
Technology
C100x
GSM / HSPA / LTE
C25
GSM / HSPA / LTE
2G bands
C100x
GSM 850 / 900 / 1800 / 1900
C25
GSM 850 / 900 / 1800 / 1900
3G bands
C100x
HSDPA 900 / 2100
C25
HSDPA 850 / 900 / 2100
4G bands
C100x
1, 3, 5, 8, 40
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
C25
1, 3, 5, 8, 38, 40, 41
Speed
C100x
HSPA, LTE
C25
HSPA, LTE
Announced
C100x
2026, May 07
C25
2021, March 23
Status
C100x
Released May 15, 2026
C25
Available. Released 2021, March 27
Dimensions
C100x
166.5 x 78.2 x 8.6 mm (6.56 x 3.08 x 0.34 in)
C25
164.5 x 75.9 x 9.6 mm (6.48 x 2.99 x 0.38 in)
Weight
C100x
219 g (7.72 oz)
C25
209 g (7.37 oz)
Build
C100x
Glass front, plastic frame, plastic back
C25
Glass front, plastic back, plastic frame
SIM
C100x
Nano-SIM + Nano-SIM
C25
Nano-SIM + Nano-SIM
Other
C100x
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 RGB light on the back (notifications, etc.)
C25
-
Type
C100x
IPS LCD, 120Hz, 900 nits (HBM)
C25
IPS LCD, 480 nits (typ)
Size
C100x
6.8 inches, 113.0 cm2 (~86.8% screen-to-body ratio)
C25
6.5 inches, 102.0 cm2 (~81.7% screen-to-body ratio)
Resolution
C100x
720 x 1570 pixels, 19.5:9 ratio (~254 ppi density)
C25
720 x 1600 pixels, 20:9 ratio (~270 ppi density)
Protection
C100x
ArmorShell glass, Mohs level 5
C25
-
OS
C100x
Android 16
C25
Android 11, Realme UI 2.0
Chipset
C100x
Unisoc T7250 (12 nm)
C25
Mediatek MT6769V/CB Helio G70 (12 nm)
CPU
C100x
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
C25
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)
GPU
C100x
Mali-G57 MP1
C25
Mali-G52 2EEMC2
Card slot
C100x
microSDXC
C25
microSDXC (dedicated slot)
Internal
C100x
128GB 4GB RAM, 128GB 6GB RAM, 256GB 4GB RAM, 256GB 6GB RAM
C25
64GB 4GB RAM, 128GB 4GB RAM
Other
C100x
eMMC 5.1
C25
eMMC 5.1
Dual
C100x
50 MP, f/1.8, (wide), PDAF Auxiliary lens
C25
-
Features
C100x
LED flash, HDR, panorama
C25
LED flash, HDR, panorama
Video
C100x
1080p@30fps
C25
1080p@30fps
Triple
C100x
-
C25
48 MP, f/1.8, 26mm (wide), PDAF (International model) or 13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF (India model) 2 MP (macro) Auxiliary lens
Single
C100x
5 MP, f/2.2, (wide)
C25
8 MP, f/2.0, 26mm (wide), 1/4.0", 1.12µm
Video
C100x
720p@30fps
C25
1080p@30fps
Features
C100x
-
C25
HDR, panorama
Loudspeaker
C100x
Yes
C25
Yes
3.5mm jack
C100x
Yes
C25
Yes
WLAN
C100x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
C25
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
C100x
5.2, A2DP, LE
C25
5.0, A2DP, LE
Positioning
C100x
GPS, GALILEO, GLONASS, BDS
C25
GPS, GLONASS, BDS
NFC
C100x
Yes (market/region dependent)
C25
No
Radio
C100x
Unspecified
C25
Unspecified
USB
C100x
USB Type-C 2.0, OTG
C25
USB Type-C 2.0, OTG
Sensors
C100x
Fingerprint (side-mounted), accelerometer, proximity, compass
C25
Fingerprint (rear-mounted), accelerometer, proximity, compass
Type
C100x
Si/C Li-Ion 8000 mAh
C25
6000 mAh
Charging
C100x
45W wired, 45W PPS, 13.5W PD Reverse wired
C25
18W wired 5W reverse wired
Colors
C100x
Golden Coast, Deepblue Tides
C25
Water Blue, Water Gray
Models
C100x
RMX5366
C25
RMX3193, RMX3191
Price
C100x
About 160 EUR
C25
About 140 EUR
SAR
C100x
-
C25
0.82 W/kg (head) 0.81 W/kg (body)