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  3. P4 vs Y400

Realme P4 vs Vivo Y400

What P4 does better (10) and where Y400 wins (4) — every spec side by side.

Realme P4
Realme · 2025P4
8.6Score
10 advantages≈ $370
Higher score
vs
Vivo Y400
Vivo · 2025Y400
8.4Score
4 advantages≈ $380
9.4Display8.4
6.8Camera5.9
9.2Battery9.0
5.8Features6.7
Dimensions

Size comparison

P4Y400
75.9 × 163.37.675.3 × 162.37.9
P4Y400Difference
Height163.3 mm162.3 mm+1 mm
Width75.9 mm75.3 mm+0.6 mm
Thickness7.6 mm7.9 mm−0.3 mm
Weight185 g197 g−12 g

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

Why is P4 better than Y400?

  1. Peak brightness4,500 nits vs 1,800 nits2.5×
  2. Battery capacity7,000 mAh vs 6,000 mAh+17%
  3. Refresh rate144 Hz vs 120 Hz+20%
  4. Rear cameras2 vs 12×
  5. Ultra-wide cameraYes · Y400: No
  6. Max video4K vs 1080p
  7. CPU frequency2.6 GHz vs 2.2 GHz+18%
  8. Weight185 g vs 197 g+6%
  9. Bluetooth5.4 vs 5+8%
  10. Thickness7.6 mm vs 7.9 mm+4%

Why is Y400 better than P4?

  1. Wired charging80 W vs 90 W+12%
  2. Water resistance (IPx)IPx6 vs IPx8+33%
  3. Memory card slotNo · P4: Yes
  4. Selfie camera16 MP vs 32 MP2×
Specifications

Side by side

Realme P4Realme P4≈ $3708.6
Vivo Y400Vivo Y400≈ $3808.4
Design
Weight185 g197 g
Thickness7.6 mm7.9 mm
Height163.3 mm162.3 mm
Width75.9 mm75.3 mm
FramePlasticPlastic
BackPlasticPlastic
Ingress protectionIP66IP68
Water resistance (IPx)IPx6IPx8
ColoursSteel Gray, Engine Blue, Forge RedGlam White, Olive Green
Display
Screen size6.8″6.7″
PanelAMOLEDAMOLED
OLED panelYesYes
Resolution (width)1,080 px1,080 px
Resolution (height)2,392 px2,400 px
Pixel density388 ppi395 ppi
Refresh rate144 Hz120 Hz
Peak brightness4,500 nits1,800 nits
Screen-to-body ratio89.5%87.9%
HDRYes—
Performance
ChipsetMediatek Dimensity 7400Qualcomm SM4450 Snapdragon 4 Gen 2
Chip makerMediaTekQualcomm
Process4 nm4 nm
CPU cores88
CPU frequency2.6 GHz2.2 GHz
GPUMali-G615 MC2Adreno 613
AnTuTu score945,377—
Geekbench 6 (multi-core)2,955—
Memory
RAM8 GB8 GB
Storage (max)256 GB256 GB
Storage (base)128 GB128 GB
Storage typeUFS 3.1UFS 3.1
Memory card slotNoYes
Camera
Main camera50 MP50 MP
Main camera aperturef/1.8f/1.8
Main sensor size—1/2.96"
Rear cameras21
Optical stabilisationNoNo
Ultra-wide cameraYesNo
Telephoto cameraNoNo
Max video4K1080p
4K video frame rate30 fps—
Selfie camera16 MP32 MP
4K selfie videoNoNo
Battery
Battery capacity7,000 mAh6,000 mAh
Battery typeSi/CLi-Ion
Wired charging80 W90 W
Charged in 30 min—75%
Wireless chargingNoNo
Connectivity
5GYesYes
eSIMNoNo
Dual SIMYesYes
Wi-Fi standardWi-Fi 5Wi-Fi 5
Bluetooth5.45
NFCNoNo
USBUSB Type-C 2.0USB Type-C 2.0
USB version22
Infrared portYes—
Satellite navigationGLONASS, GALILEO, BDSGLONASS, GALILEO, BDS, QZSS
Features
Stereo speakersYesYes
3.5 mm headphone jackNoNo
Fingerprint sensorUnder displayUnder display
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
SAR (head)—0.99 W/kg
Software
OS at launchAndroid 15Android 15
PlatformAndroidAndroid
InterfaceRealme UI 6.0Funtouch 15
To compare: 0up to 4 models
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