Product
Vivo Y400 Pro
Vivo Y400 Pro
₹31,999
Samsung Galaxy M55s
Samsung Galaxy M55s
₹28,999
Battery
Charging 90W wired, 50% in 19 min 6W reverse wired 45W wired
Type Li-Ion 5500 mAh 5000 mAh
Body
Build Glass front, plastic back, plastic frame -
Dimensions 163.8 x 75.0 x 7.5 or 7.7 mm 163.9 x 76.5 x 7.8 mm (6.45 x 3.01 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 182 g (6.42 oz) 180 g (6.35 oz)
  IP65 dust tight and water resistant (low pressure water jets) -
Comms
Bluetooth 5.4, A2DP, LE 5.2, A2DP, LE
Infrared port Yes -
NFC No Yes
Positioning GPS, GLONASS, GALILEO, BDS, QZSS GPS, GALILEO, GLONASS, BDS, QZSS
Radio No No
USB USB Type-C 2.0, OTG USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Display
Resolution 1080 x 2392 pixels (~388 ppi density) 1080 x 2400 pixels, 20:9 ratio (~393 ppi density)
Size 6.77 inches, 110.9 cm2 (~90.3% screen-to-body ratio) 6.7 inches, 108.4 cm2 (~86.4% screen-to-body ratio)
Type AMOLED, 120Hz, HDR, 1300 nits (HBM), 4500 nits (peak) Super AMOLED+, 120Hz, 1000 nits (HBM)
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
  Circle to Search -
Launch
Announced 2025, June 20 2024, September 24
Status Available. Released 2025, June 27 Available. Released 2024, September 26
Main Camera
Dual 50 MP, f/1.8, (wide), 1/1.95", 0.8µm, PDAF 2 MP, f/2.4, (depth) -
Features Ring-LED flash, panorama, HDR LED flash, panorama, HDR
Triple - 50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 123˚ (ultrawide) 2 MP, f/2.4, (macro)
Video 4K@30fps, 1080p@30fps, gyro-EIS 4K@30fps, 1080p@30/60fps, gyro-EIS, OIS
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 128GB 8GB RAM, 256GB 8GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  UFS 3.1 -
Misc
Colors Fest Gold, Freestyle White, Nebula Purple Thunder Black, Coral Green
Models - SM-M558B, SM-M558B/DS
SAR 0.90 W/kg (head)     0.93 W/kg (head)    
SAR EU 0.85 W/kg (head)     -
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 3, 5, 8, 28, 38, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 38, 40, 41, 66
5G bands 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6
Speed HSPA, LTE, 5G HSPA, LTE, 5G
Technology GSM / HSPA / LTE / 5G GSM / HSPA / LTE / 5G
Platform
Chipset Mediatek Dimensity 7300 (4 nm) Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)
CPU Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55) Octa-core (1x2.4 GHz Cortex-A710 & 3x2.36 GHz Cortex-A710 & 4x1.8 GHz Cortex-A510)
GPU Mali-G615 MC2 Adreno 644
OS Android 15, Funtouch 15 Android 14, up to 4 major Android upgrades, One UI 6.1
Selfie camera
Single 32 MP, f/2.5, (wide) 50 MP, f/2.4, (wide)
Video 4K@30fps, 1080p@30fps 4K@30fps, 1080p@30/60fps
Sound
3.5mm jack No No
Loudspeaker Yes, with stereo speakers Yes, with stereo speakers
  24-bit/192kHz Hi-Res & Hi-Res wireless audio -
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