Product
Xiaomi Redmi K50i
Xiaomi Redmi K50i
Vivo Y400 Pro
Vivo Y400 Pro
Battery
Charging 67W wired, 50% in 15 min, 100% in 46 min 90W wired, 50% in 19 min 6W reverse wired
Type Li-Po 5080 mAh Li-Ion 5500 mAh
Body
Build - Glass front, plastic back, plastic frame
Dimensions 163.6 x 74.3 x 8.9 mm (6.44 x 2.93 x 0.35 in) 163.8 x 75.0 x 7.5 or 7.7 mm
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 200 g (7.05 oz) 182 g (6.42 oz)
  - IP65 dust tight and water resistant (low pressure water jets)
Comms
Bluetooth 5.3, A2DP, LE 5.4, A2DP, LE
Infrared port Yes Yes
NFC No No
Positioning GPS (L1), GLONASS (L1), BDS (B1I+B1c), GALILEO (E1), QZSS (L1) GPS, GLONASS, GALILEO, 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/6, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band
Display
Protection Corning Gorilla Glass 5 -
Resolution 1080 x 2460 pixels (~407 ppi density) 1080 x 2392 pixels (~388 ppi density)
Size 6.6 inches, 103.4 cm2 (~85.1% screen-to-body ratio) 6.77 inches, 110.9 cm2 (~90.3% screen-to-body ratio)
Type FFS LCD, 144Hz, HDR10, Dolby Vision, 500 nits (typ), 650 nits (HBM) AMOLED, 120Hz, HDR, 1300 nits (HBM), 4500 nits (peak)
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, gyro, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
  - Circle to Search
Launch
Announced 2022, July 20 2025, June 20
Status Available. Released 2022, July 23 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 Color spectrum sensor, LED flash, HDR, panorama Ring-LED flash, panorama, HDR
Triple 64 MP, f/1.9, (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.2, 120˚, (ultrawide) 2 MP, f/2.4, (macro) -
Video 4K@30fps, 1080p@30/60fps 4K@30fps, 1080p@30fps, gyro-EIS
Memory
Card slot No No
Internal 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  UFS 3.1 UFS 3.1
Misc
Colors Phantom Blue, Stealth Black, Quick Silver Fest Gold, Freestyle White, Nebula Purple
Models 22041216I -
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, 20, 28, 38, 40, 41 1, 3, 5, 8, 28, 38, 40, 41
5G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Speed HSPA, LTE (CA), 5G HSPA, LTE, 5G
Technology GSM / HSPA / LTE / 5G GSM / HSPA / LTE / 5G
Platform
Chipset Mediatek Dimensity 8100 (5 nm) Mediatek Dimensity 7300 (4 nm)
CPU Octa-core (4x2.85 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55) Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Mali-G610 MC6 Mali-G615 MC2
OS Android 12, upgradable to Android 13, MIUI 14 Android 15, Funtouch 15
Selfie camera
Single 16 MP, f/2.5, (wide) 32 MP, f/2.5, (wide)
Video 1080p@30fps 4K@30fps, 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes, with stereo speakers Yes, with stereo speakers
  24-bit/192kHz Hi-Res audio 24-bit/192kHz Hi-Res & Hi-Res wireless audio