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Realme C75 5G vs Vivo Y31

What C75 5G does better (8) and where Y31 wins (3) — every spec side by side.

Realme C75 5G
Realme · 2025C75 5G
7.4Score
8 advantages
vs
Vivo Y31
Vivo · 2025Y31
7.4Score
3 advantages≈ $160
Higher score
6.4Display6.2
4.6Camera4.6
8.1Battery8.4
6.7Features6.7
Dimensions

Size comparison

C75 5GY31
76.2 × 165.7877 × 166.18.4
C75 5GY31Difference
Height165.7 mm166.1 mm−0.4 mm
Width76.2 mm77 mm−0.8 mm
Thickness8 mm8.4 mm−0.4 mm
Weight196 g209 g−13 g

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

Why is C75 5G better than Y31?

  1. Pixel density392 ppi vs 264 ppi+48%
  2. Wired charging45 W vs 44 W+2%
  3. Storage (base)256 GB vs 128 GB2×
  4. CPU frequency2.4 GHz vs 2.2 GHz+9%
  5. Weight196 g vs 209 g+7%
  6. Resolution (width)1,080 px vs 720 px+50%
  7. Bluetooth5 vs 4.2+19%
  8. Thickness8 mm vs 8.4 mm+5%

Why is Y31 better than C75 5G?

  1. Storage (max)256 GB vs 512 GB2×
  2. Battery capacity5,828 mAh vs 6,500 mAh+12%
  3. Peak brightness690 nits vs 1,000 nits+45%
Specifications

Side by side

Vivo Y31Vivo Y31≈ $1607.4
Design
Weight196 g209 g
Thickness8 mm8.4 mm
Height165.7 mm166.1 mm
Width76.2 mm77 mm
Ingress protectionIP68IP68
Water resistance (IPx)IPx8IPx8
Glass protection—Guardian Glass (ion-strengthened)
Colours—Rose Red, Diamond Green
Display
Screen size6.7″6.7″
PanelLCDIPS LCD
OLED panelNoNo
Resolution (width)1,080 px720 px
Resolution (height)2,400 px1,608 px
Pixel density392 ppi264 ppi
Refresh rate120 Hz120 Hz
Peak brightness690 nits1,000 nits
Screen-to-body ratio—84%
Performance
ChipsetMediatek Dimensity 6300Qualcomm SM4450 Snapdragon 4 Gen 2
Chip makerMediatekQualcomm
Process—4 nm
CPU cores88
CPU frequency2.4 GHz2.2 GHz
GPUMali G57 MC2Adreno 613
Memory
RAM8 GB8 GB
Storage (max)256 GB512 GB
Storage (base)256 GB128 GB
Storage type—eMMC 5.1
Memory card slotYesYes
Camera
Main camera50 MP50 MP
Main camera aperturef/1.8f/1.8
Rear cameras11
Optical stabilisationNoNo
Ultra-wide cameraNoNo
Telephoto cameraNoNo
Max video1080p1080p
Selfie camera8 MP8 MP
4K selfie videoNoNo
Battery
Battery capacity5,828 mAh6,500 mAh
Battery type—Li-Ion
Wired charging45 W44 W
Charged in 30 min—39%
Wireless chargingNoNo
Connectivity
5GYesYes
eSIMNoNo
Dual SIMYesYes
Wi-Fi standardWi-Fi 5Wi-Fi 5
Bluetooth54.2
NFCNoNo
USBUSB Type-CUSB Type-C 2.0
USB version22
Satellite navigationGPS, GLONASS, GALILEO, BDS, QZSSGLONASS, GALILEO, BDS, QZSS
Features
Stereo speakersYesYes
3.5 mm headphone jackNoNo
Fingerprint sensorSideSide
Sensorsproximity, accelerometer, gyro, compass, fingerprintFingerprint (side-mounted), accelerometer, proximity, compass
SAR (head)—1.13 W/kg
Software
OS at launchAndroid 14Android 15
PlatformAndroidAndroid
Interface—Funtouch 15
EU label
Energy classA—

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