Realme C100i vs Xiaomi Redmi 15a

Verdict

The Realme C100i scores higher in 2 of 6 sections (design & durability and display), while the Xiaomi Redmi 15a leads in connectivity & features, performance and camera; they are even on battery.

The biggest difference is connectivity & features: 21 vs 44 points.

Choose the Realme C100i for design & durability and display; choose the Xiaomi Redmi 15a for connectivity & features and performance.

C100i leads in 4 fields
Redmi 15a leads in 6 fields
24 ties

34 scored fields compared

Score by section

Section scores	C100i	Redmi 15a
Overall
Performance	28	36
Camera	4	9
Battery	56	55
Display	51	48
Design & durability	50	33
Connectivity & features	21	44

Full specifications

Only differences

Performance

Chipset performance index: C100i: 15/100; Redmi 15a: 30/100(Better)
Chipset: C100i: Unisoc T7250; Redmi 15a: Unisoc T8300
RAM (max): C100i: 6 GB; Redmi 15a: 6 GB
Storage (max): C100i: 256 GB(Better); Redmi 15a: 128 GB
Process node: C100i: 12 nm; Redmi 15a: 6 nm

Camera

Main camera resolution: C100i: 8 MP; Redmi 15a: 32 MP(Better)
Optical stabilization (OIS): C100i: No; Redmi 15a: No
Ultra-wide camera: C100i: No; Redmi 15a: No
Telephoto camera: C100i: No; Redmi 15a: No
Periscope lens: C100i: No; Redmi 15a: No
Optical zoom: C100i: No; Redmi 15a: No
Video recording: C100i: 1080p; Redmi 15a: 1080p
Front camera: C100i: 5 MP; Redmi 15a: 8 MP(Better)
Front camera 4K video: C100i: No; Redmi 15a: No

Battery

Battery capacity: C100i: 7000 mAh(Better); Redmi 15a: 6300 mAh
Wired charging: C100i: 15 W; Redmi 15a: 15 W
Wireless charging: C100i: No; Redmi 15a: No
Reverse charging: C100i: Yes; Redmi 15a: Yes
Reverse charging type: C100i: Wired; Redmi 15a: Wired

Display

Screen size: C100i: 6.8″; Redmi 15a: 6.9″
Panel type: C100i: LCD; Redmi 15a: LCD
Refresh rate: C100i: 120 Hz; Redmi 15a: 120 Hz
Pixel density: C100i: 254 ppi; Redmi 15a: 254 ppi
Peak brightness: C100i: Unknown; Redmi 15a: 800 nits
Resolution: C100i: 720x1570; Redmi 15a: 720x1600
Screen protection: C100i: Panda MN228 or Corning Gorilla Glass; Redmi 15a: Unknown

Design & durability

Weight: C100i: 208 g(Better); Redmi 15a: 210 g
Thickness: C100i: 8.4 mm; Redmi 15a: 8.2 mm(Better)
Dust & water resistance: C100i: IP5x (splash resistant)(Better); Redmi 15a: None
Back material: C100i: Plastic; Redmi 15a: Unknown
Frame material: C100i: Plastic; Redmi 15a: Unknown

Connectivity & features

5G: C100i: No; Redmi 15a: Yes(Better)
Wi-Fi: C100i: Wi-Fi 5; Redmi 15a: Wi-Fi 5
Bluetooth: C100i: 5.2; Redmi 15a: 5.4(Better)
USB speed: C100i: USB 2.0; Redmi 15a: USB 2.0
USB port: C100i: USB-C 2.0; Redmi 15a: USB-C 2.0
DisplayPort output: C100i: No; Redmi 15a: No
NFC: C100i: No; Redmi 15a: No
eSIM: C100i: No; Redmi 15a: No
Ultra-wideband (UWB): C100i: No; Redmi 15a: No
Satellite connectivity: C100i: No; Redmi 15a: No
Stereo speakers: C100i: No; Redmi 15a: No
3.5 mm headphone jack: C100i: Yes; Redmi 15a: Yes
Fingerprint reader: C100i: Side-mounted; Redmi 15a: Side-mounted
3D face unlock: C100i: No; Redmi 15a: No
Infrared blaster: C100i: No; Redmi 15a: No
FM radio: C100i: Unknown; Redmi 15a: Yes
microSD slot: C100i: Yes; Redmi 15a: Yes
Card slot: C100i: microSD; Redmi 15a: microSD

General

Operating system: C100i: Android 16; Redmi 15a: Android 16
OS updates (major versions): C100i: Unknown; Redmi 15a: 4
Launch price: C100i: About 110 EUR; Redmi 15a: About 120 EUR
Year: C100i: 2026; Redmi 15a: 2026

Show raw spec text

Original text from the source spec sheet, for reference.

—	C100i	Redmi 15a
Network
Technology	GSM / HSPA / LTE	GSM / HSPA / LTE / 5G
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 2100	HSDPA 850 / 900 / 2100
4G bands	1, 3, 5, 7, 8, 20, 28, 38, 40, 41	1, 3, 5, 8, 28, 40, 41
Speed	HSPA, LTE	HSPA, LTE, 5G
5G bands	–	1, 3, 5, 8, 28, 40, 41, 78 SA/NSA
Launch
Announced	2026, April 30	2026, March 27
Status	Available. Released 2026, May 07	Available. Released 2026, April 03
Body
Dimensions	166.5 x 78.2 x 8.4 mm (6.56 x 3.08 x 0.33 in)	171.6 x 79.5 x 8.2 mm (6.76 x 3.13 x 0.32 in)
Weight	208 g (7.34 oz)	210 g (7.41 oz)
Build	Glass front, plastic frame, plastic back	–
SIM	Nano-SIM + Nano-SIM 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	Nano-SIM + Nano-SIM Dust and splash resistant
Display
Type	IPS LCD, 120Hz	IPS LCD, 120Hz, 800 nits (peak)
Size	6.8 inches, 113.0 cm2 (~86.8% screen-to-body ratio)	6.9 inches, 114.9 cm2 (~84.3% screen-to-body ratio)
Resolution	720 x 1570 pixels, 19.5:9 ratio (~254 ppi density)	720 x 1600 pixels, 20:9 ratio (~254 ppi density)
Protection	Panda MN228 or Corning Gorilla Glass	–
Platform
OS	Android 16	Android 16, HyperOS 3, up to 4 major OS updates
Chipset	Unisoc T7250 (12 nm)	Unisoc T8300 (6 nm)
CPU	Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)	Octa-core (2x2.2 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU	Mali-G57 MP1	Mali-G57 MC2
Memory
Card slot	microSDXC	microSDXC (dedicated slot)
Internal	64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 256GB 4GB RAM eMMC 5.1	64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM UFS 2.2
Main Camera
Single	8 MP, f/2.0, (wide), AF	–
Features	LED flash, HDR, panorama	LED flash, HDR
Video	1080p@30fps	1080p@30fps
Dual	–	32 MP, f/2.0, (wide), 1.12µm, AF Auxiliary lens
Selfie camera
Single	5 MP, f/2.2, (wide)	8 MP, f/2.0, (wide), 1/4.0", 1.12µm
Video	720p@30fps	1080p@30fps
Features	–	HDR
Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	Yes
Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band	Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth	5.2, A2DP, LE	5.4, A2DP, LE
Positioning	GPS, GALILEO, GLONASS, BDS	GPS, GLONASS, GALILEO, BDS
NFC	No	No
Radio	Unspecified	FM radio, recording
USB	USB Type-C 2.0, OTG	USB Type-C 2.0, OTG
Features
Sensors	Fingerprint (side-mounted), accelerometer, gyro, proximity, compass	Fingerprint (side-mounted), accelerometer, compass Virtual proximity sensing
Battery
Type	Si/C Li-Ion 7000 mAh	6300 mAh
Charging	15W wired, PD, QC Reverse wired	15W wired 7.5W reverse wired
Misc
Colors	Dawn Purple, Dusk Gray	Black, Blue, Purple
Models	RMX5377	–
Price	About 110 EUR	About 120 EUR