Compare vivo Y31 vs vivo Y400 4G

vivo Y31
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vivo Y400 4G
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  vivo Y31 vivo Y400 4G
Launch
Version September 2025 July 2025
Network
Technology 5G 4G
Body
Dimensions 166.1 x 77 x 8.4 mm (6.54 x 3.03 x 0.33 in) 162.3 x 75.3 x 7.9 mm (6.39 x 2.96 x 0.31 in)
Weight 209 g (7.37 oz) 196 g or 198 g
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Design Glass front, plastic back, plastic frame
Others IP68/IP69 dust tight and water resistant IP68/IP69 dust tight and water resistant
Display
Type IPS LCD, 120Hz AMOLED, 120Hz
Size 6.68 inches 6.67 inches
Resolution 720 x 1608 pixels 1080 x 2400 pixels
Protection Guardian Glass
Various
Platform
Operating System Android 15, Funtouch 15 Android 15, Funtouch 15
Chipset Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm) Qualcomm SM6225 Snapdragon 685 (6 nm)
CPU Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55) Octa-core (4x2.8 GHz Cortex-A73 & 4x1.9 GHz Cortex-A53)
GPU Adreno 613 Adreno 610
Memory
Card Slot microSDXC No
Internal 128GB 4GB RAM, 128GB 6GB RAM 128GB 8GB RAM, 256GB 8GB RAM
Camera
Primary 50 MP, f/1.8, (wide) + Auxiliary lens 50 MP, f/1.8, (wide) + 2 MP, f/2.4, (depth)
Features Ring-LED flash, panorama Ring-LED flash, panorama, HDR
Video 1080p@30fps 1080p@30fps
Selfie 8 MP 1080p@30fps 8 MP 1080p@30fps
Sound
Loudspeaker Yes, with stereo speakers Yes, with stereo speakers
3.5mm Jack No No
Extra 24-bit/192kHz Hi-Res audio 24-bit/192kHz Hi-Res audio
Comms
Wifi a/b/g/n/ac, dual-band a/b/g/n/ac, dual-band
Bluetooth 4.2 5.0
GPS Yes Yes
NFC No Yes
Infrared
Radio No No
USB USB Type-C 2.0 USB Type-C 2.0
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Miscellaneous
Battery
Battery type 6500 mAh 6000 mAh
Charging 44W wired, Reverse wired 44W wired, Reverse wired
Misc
Colors Rose Red, Diamond Green Purple Twilight, Tropical Green, Pearl White
Models
Inside the box
Price 160 USD 220 USD
vivo Y31:
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vivo Y400 4G:
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  vivo Y31 vivo Y400 4G