Product
Vivo Y55 5G
Vivo Y55 5G
Vivo Y400 Pro
Vivo Y400 Pro
Battery
Charging 18W wired 90W wired, 50% in 19 min 6W reverse wired
Type 5000 mAh Li-Ion 5500 mAh
Body
Build Glass front, plastic frame, plastic back Glass front, plastic back, plastic frame
Dimensions 164 x 75.9 x 8.3 mm (6.46 x 2.99 x 0.33 in) 163.8 x 75.0 x 7.5 or 7.7 mm
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 187 g (6.60 oz) 182 g (6.42 oz)
  - IP65 dust tight and water resistant (low pressure water jets)
Comms
Bluetooth 5.1, A2DP, LE 5.4, A2DP, LE
Infrared port - Yes
NFC Yes No
Positioning GPS, GLONASS, GALILEO, BDS, QZSS GPS, GLONASS, GALILEO, BDS, QZSS
Radio FM radio No
USB USB Type-C, OTG USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band
Display
Resolution 1080 x 2408 pixels, 20:9 ratio (~401 ppi density) 1080 x 2392 pixels (~388 ppi density)
Size 6.58 inches, 104.3 cm2 (~83.8% screen-to-body ratio) 6.77 inches, 110.9 cm2 (~90.3% screen-to-body ratio)
Type IPS LCD AMOLED, 120Hz, HDR, 1300 nits (HBM), 4500 nits (peak)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
  - Circle to Search
Launch
Announced 2022, January 17 2025, June 20
Status Available. Released 2022, January 17 Available. Released 2025, June 27
Main Camera
Dual - 50 MP, f/1.8, (wide), 1/1.95", 0.8µm, PDAF 2 MP, f/2.4, (depth)
Features Dual-LED flash, HDR, panorama Ring-LED flash, panorama, HDR
Triple 50 MP, f/1.8, 26mm (wide), PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Video 1080p@30fps, gyro-EIS 4K@30fps, 1080p@30fps, gyro-EIS
Memory
Card slot microSDXC No
Internal 128GB 4GB RAM, 128GB 6GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  - UFS 3.1
Misc
Colors Black, Blue Fest Gold, Freestyle White, Nebula Purple
Models V2127, V2154 -
SAR - 0.90 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 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 32, 38, 39, 40, 41 1, 3, 5, 8, 28, 38, 40, 41
5G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 78 SA/NSA 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Speed HSPA, LTE, 5G HSPA, LTE, 5G
Technology GSM / HSPA / LTE / 5G GSM / HSPA / LTE / 5G
Platform
Chipset Mediatek Dimensity 700 (7 nm) Mediatek Dimensity 7300 (4 nm)
CPU Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Mali-G57 MC2 Mali-G615 MC2
OS Android 11, Funtouch 12 Android 15, Funtouch 15
Selfie camera
Single 8 MP, f/1.8, (wide) 32 MP, f/2.5, (wide)
Video 1080p@30fps 4K@30fps, 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes, with stereo speakers
  - 24-bit/192kHz Hi-Res & Hi-Res wireless audio