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realme P3 Ultra 5G vs vivo Y400 5G

Same price. Here is what actually separates them.

realme realme P3 Ultra 5G From ₹31,999
vivo Y400 5G From ₹31,999
The short version

Which one should you buy?

Same price: both start at ₹31,999 in India, so this comes down to what you get for it.

  • The Y400 5G charges faster: 90W against 80W.
  • The screens are a split decision: the realme P3 Ultra 5G is sharper (Full HD+ against Full HD+), the Y400 5G is brighter (1,800 nits against 1,500).
  • Only the realme P3 Ultra 5G has an ultrawide camera; the Y400 5G backs its main camera with a 2MP depth sensor. Only the realme P3 Ultra 5G stabilises its main camera optically (OIS), which helps in low light and on video.
  • The realme P3 Ultra 5G is the lighter phone: 186 g against 197 g.
Which to buy

Get the realme P3 Ultra 5G for the sharper screen, the ultrawide camera and a stabilised main camera. Get the Y400 5G for faster charging and the brighter screen.

Side by side

Every spec, lined up

Better on paper

Spec score

Specrealme P3 Ultra 5GY400 5G
Overall 8 out of 10 Excellent (better) 6.9 out of 10 Good
Performance 8.2 out of 10 (better) 5.8 out of 10
Display 8.5 out of 10 8.5 out of 10
Rear camera 7.1 out of 10 (better) 5 out of 10
Front camera 5.5 out of 10 6.2 out of 10 (better)
Battery 8.3 out of 10 8.3 out of 10
Build 9.7 out of 10 (better) 8.3 out of 10

Display

Specrealme P3 Ultra 5GY400 5G
Size 6.83 inches 6.67 inches
Panel AMOLED AMOLED
Resolution 2800 x 1272 (Full HD+) (better) 2400 x 1080 (Full HD+)
Refresh rate 120Hz 120Hz
Peak brightness 1,500 nits 1,800 nits (better)
Protection Gorilla Glass 7i Not listed

Performance

Specrealme P3 Ultra 5GY400 5G
Chipset MediaTek Dimensity 8350 Ultra Snapdragon 4 Gen 2
CPU Octa-core, up to 3.35GHz Octa-core, up to 2.2GHz
GPU Mali-G615 Not listed
RAM 12GB 8GB
Storage 256GB 128GB
Software realme UI 6, Android 15 Funtouch OS 15, Android 15

Camera

Specrealme P3 Ultra 5GY400 5G
Rear cameras 50MP main (Sony IMX896, OIS) + 8MP ultrawide 50MP main (f/1.8) + 2MP depth (f/2.4)
Front camera 16MP (f/2.4) 32MP (f/2.45)
Video 4K at 60fps (rear), 1080p at 60fps (front) Not listed

Battery

Specrealme P3 Ultra 5GY400 5G
Battery 6,000 mAh 6,000 mAh
Wired charging 80W 90W (better)

Build and connectivity

Specrealme P3 Ultra 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 IP66, IP68, IP69 IP68 and IP69
Weight 186 g (better) 197 g
Thickness 7.47 mm (better) 7.9 mm
Colours Orion Red, Neptune Blue, Glowing Lunar White Glam White, Olive Green

Availability

Specrealme P3 Ultra 5GY400 5G
Launch in India 19 Mar 2025 4 Aug 2025
Status On sale On sale
Price in India

Versions and prices

realme P3 Ultra 5G
  • 12GB + 256GB₹31,999
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 P3 Ultra 5G vs Y400 5G, answered

In India, the realme P3 Ultra 5G starts at ₹31,999 and the vivo Y400 5G starts at ₹31,999.

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Which is cheaper, the realme P3 Ultra 5G or the Y400 5G?

Neither: both start at ₹31,999.

Which has the bigger battery, the realme P3 Ultra 5G or the Y400 5G?

Neither: both have 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 Y400 5G's: it is brighter (1,800 to 1,500 nits). The realme P3 Ultra 5G has a 6.83-inch AMOLED at 120Hz, the Y400 5G a 6.67-inch AMOLED at 120Hz.

Which has the better camera?

On features, only the realme P3 Ultra 5G has an ultrawide camera. The main cameras are 50MP main (Sony IMX896, OIS) on the realme P3 Ultra 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 P3 Ultra 5G runs the MediaTek Dimensity 8350 Ultra, the Y400 5G the Snapdragon 4 Gen 2.

Which is better protected against water?

Neither: both are rated IP66, IP68 and IP69. Still, no phone is fully waterproof, so keep them out of the pool.

Which is lighter?

The realme P3 Ultra 5G, at 186 g to 197 g.