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realme P4 Pro 5G vs vivo Y400 5G

₹1,000 apart. Here is what actually separates them.

realme realme P4 Pro 5G From ₹30,999
vivo Y400 5G From ₹31,999
The short version

Which one should you buy?

The realme P4 Pro 5G starts ₹1,000 lower: ₹30,999 against ₹31,999 for the Y400 5G.

  • The realme P4 Pro 5G has the bigger battery: 7,000 mAh against 6,000 mAh. The Y400 5G charges faster, though: 90W against 80W.
  • The realme P4 Pro 5G has the better screen on paper: smoother (144Hz against 120Hz), brighter (6,500 nits against 1,800) and sharper (2800 x 1280 against Full HD+).
  • Only the realme P4 Pro 5G has an ultrawide camera; the Y400 5G backs its main camera with a 2MP depth sensor. Only the realme P4 Pro 5G stabilises its main camera optically (OIS), which helps in low light and on video.
  • The Y400 5G is better sealed against dust and water: IP68 and IP69 against IP65 and IP66. Only it is rated to survive a dunk in water.
Which to buy

Get the realme P4 Pro 5G for the lower price, the bigger battery and the better screen. Get the Y400 5G for faster charging and better water protection.

Side by side

Every spec, lined up

Better on paper

Spec score

Specrealme P4 Pro 5GY400 5G
Overall 8.2 out of 10 Excellent (better) 6.9 out of 10 Good
Performance 7.6 out of 10 (better) 5.8 out of 10
Display 9.4 out of 10 (better) 8.5 out of 10
Rear camera 7.1 out of 10 (better) 5 out of 10
Front camera 7.9 out of 10 (better) 6.2 out of 10
Battery 8.8 out of 10 (better) 8.3 out of 10
Build 8.2 out of 10 8.3 out of 10 (better)

Display

Specrealme P4 Pro 5GY400 5G
Size 6.8 inches 6.67 inches
Panel AMOLED AMOLED
Resolution 2800 x 1280 (better) 2400 x 1080 (Full HD+)
Refresh rate 144Hz (better) 120Hz
Peak brightness 6,500 nits (better) 1,800 nits
Protection Corning Gorilla Glass Not listed

Performance

Specrealme P4 Pro 5GY400 5G
Chipset Snapdragon 7 Gen 4 Snapdragon 4 Gen 2
CPU Octa-core, up to 2.8GHz Octa-core, up to 2.2GHz
GPU Adreno Not listed
RAM 8GB 8GB
Storage 256GB 128GB
Software realme UI 6, Android 15 Funtouch OS 15, Android 15

Camera

Specrealme P4 Pro 5GY400 5G
Rear cameras 50MP main (Sony IMX896, OIS) + 8MP ultrawide 50MP main (f/1.8) + 2MP depth (f/2.4)
Front camera 50MP (f/2.4) 32MP (f/2.45)
Video 4K at 60fps (rear), 4K at 60fps (front) Not listed

Battery

Specrealme P4 Pro 5GY400 5G
Battery 7,000 mAh (better) 6,000 mAh
Wired charging 80W 90W (better)

Build and connectivity

Specrealme P4 Pro 5GY400 5G
Network 5G, 4G LTE 5G, 4G
SIM Dual nano SIM Dual nano SIM
Wi-Fi and Bluetooth Wi-Fi 6, Bluetooth 5.4 Wi-Fi (2.4GHz, 5GHz), Bluetooth
NFC No No
Dust and water IP65, IP66 IP68 and IP69 (better)
Weight 189 g (better) 197 g
Thickness 7.68 mm (better) 7.9 mm
Colours Birch Wood, Midnight Ivy, Dark Oak Wood Glam White, Olive Green

Availability

Specrealme P4 Pro 5GY400 5G
Launch in India 20 Aug 2025 4 Aug 2025
Status On sale On sale
Price in India

Versions and prices

realme P4 Pro 5G
  • 8GB + 256GB₹30,999
Y400 5G
  • 8GB + 128GB₹31,999

Prices in India as we last checked them. Sales and bank offers change them often, so check before you buy.

Quick answers

realme P4 Pro 5G vs Y400 5G, answered

In India, the realme P4 Pro 5G starts at ₹30,999 and the vivo Y400 5G starts at ₹31,999.

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Which is cheaper, the realme P4 Pro 5G or the Y400 5G?

The realme P4 Pro 5G, by ₹1,000. Starting prices: ₹30,999 for the realme P4 Pro 5G, ₹31,999 for the Y400 5G.

Which has the bigger battery, the realme P4 Pro 5G or the Y400 5G?

The realme P4 Pro 5G, with 7,000 mAh to 6,000 mAh. For charging, the Y400 5G is quicker: 90W to 80W. Battery life also depends on the chip and the software, so treat these as a starting point.

Which has the better display?

On paper, the realme P4 Pro 5G's: it is smoother (144Hz to 120Hz) and brighter (6,500 to 1,800 nits). The realme P4 Pro 5G has a 6.8-inch AMOLED at 144Hz, the Y400 5G a 6.67-inch AMOLED at 120Hz.

Which has the better camera?

On features, only the realme P4 Pro 5G has an ultrawide camera. The main cameras are 50MP main (Sony IMX896, OIS) on the realme P4 Pro 5G and 50MP main (f/1.8) on the Y400 5G. A spec sheet can't show how the photos look, so read a review before you decide on the camera alone.

Which processors do they use?

The realme P4 Pro 5G runs the Snapdragon 7 Gen 4, the Y400 5G the Snapdragon 4 Gen 2.

Which is better protected against water?

The Y400 5G, rated IP68 and IP69 to the realme P4 Pro 5G's IP65 and IP66. Only the Y400 5G is rated to survive a dunk. Still, no phone is fully waterproof, so keep them out of the pool.

Which is lighter?

They weigh about the same: 189 g and 197 g.