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  3. C100i vs Redmi 15a

Realme C100i vs Xiaomi Redmi 15a

What C100i does better (5) and where Redmi 15a wins (7) — every spec side by side.

Realme C100i
Realme · 2026C100i
5.8Score
5 advantages≈ $120
vs
Xiaomi Redmi 15a
Xiaomi · 2026Redmi 15a
6.2Score
7 advantages≈ $130
Higher score
6.3Display6.3
2.3Camera3.8
7.2Battery6.9
3.2Features4.6
Dimensions

Size comparison

C100iRedmi 15a
78.2 × 166.58.479.5 × 171.68.2
C100iRedmi 15aDifference
Height166.5 mm171.6 mm−5.1 mm
Width78.2 mm79.5 mm−1.3 mm
Thickness8.4 mm8.2 mm+0.2 mm
Weight208 g210 g−2 g

Drawn to the same scale from the official dimensions (front and side).

Why is C100i better than Redmi 15a?

  1. Water resistance (IPx)IPx4 vs IPx22×
  2. Storage (max)256 GB vs 128 GB2×
  3. Battery capacity7,000 mAh vs 6,300 mAh+11%
  4. Peak brightness900 nits vs 800 nits+12%
  5. Screen-to-body ratio86.8% vs 84.3%+3%

Why is Redmi 15a better than C100i?

  1. Main camera8 MP vs 32 MP4×
  2. 5GNo · C100i: Yes
  3. CPU frequency1.8 GHz vs 2.2 GHz+22%
  4. Process12 nm vs 6 nm2×
  5. Selfie camera5 MP vs 8 MP+60%
  6. Bluetooth5.2 vs 5.4+4%
  7. Thickness8.4 mm vs 8.2 mm+2%
Specifications

Side by side

Realme C100iRealme C100i≈ $1205.8
Xiaomi Redmi 15aXiaomi Redmi 15a≈ $1306.2
Design
Weight208 g210 g
Thickness8.4 mm8.2 mm
Height166.5 mm171.6 mm
Width78.2 mm79.5 mm
FramePlasticPlastic
BackPlasticPlastic
Ingress protectionIP64IP52
Water resistance (IPx)IPx4IPx2
Glass protectionPanda MN228 or Corning Gorilla Glass—
ColoursDawn Purple, Dusk GrayBlack, Blue, Purple
Display
Screen size6.8″6.9″
PanelIPS LCDIPS LCD
OLED panelNoNo
Resolution (width)720 px720 px
Resolution (height)1,570 px1,600 px
Pixel density254 ppi254 ppi
Refresh rate120 Hz120 Hz
Peak brightness900 nits800 nits
Screen-to-body ratio86.8%84.3%
Performance
ChipsetUnisoc T7250Unisoc T8300
Chip makerUnisocUnisoc
Process12 nm6 nm
CPU cores88
CPU frequency1.8 GHz2.2 GHz
GPUMali-G57 MP1Mali-G57 MC2
Geekbench 6 (multi-core)—2,074
Memory
RAM6 GB6 GB
Storage (max)256 GB128 GB
Storage (base)64 GB64 GB
Storage typeeMMC 5.1UFS 2.2
Memory card slotYesYes
Camera
Main camera8 MP32 MP
Main camera aperturef/2f/2
Rear cameras11
Optical stabilisationNoNo
Ultra-wide cameraNoNo
Telephoto cameraNoNo
Max video1080p1080p
Selfie camera5 MP8 MP
4K selfie videoNoNo
Battery
Battery capacity7,000 mAh6,300 mAh
Battery typeSi/CLi-Po
Wired charging15 W15 W
Wireless chargingNoNo
Connectivity
5GNoYes
eSIMNoNo
Dual SIMYesYes
Wi-Fi standardWi-Fi 5Wi-Fi 5
Bluetooth5.25.4
NFCNoNo
USBUSB Type-C 2.0USB Type-C 2.0
USB version22
Satellite navigationGLONASS, GALILEO, BDSGLONASS, GALILEO, BDS
Features
Stereo speakersNoNo
3.5 mm headphone jackYesYes
Fingerprint sensorSideSide
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, compass
Software
OS at launchAndroid 16Android 16
PlatformAndroidAndroid
Interfacerealme UI 5.0HyperOS 3
Major OS updates promised—4
To compare: 0up to 4 models
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