Product
Oppo F21 Pro
Oppo F21 Pro
Vivo Y400 Pro
Vivo Y400 Pro
Battery
Charging 33W wired, 100% in 60 min Reverse wired 90W wired, 50% in 19 min 6W reverse wired
Type Li-Po 4500 mAh Li-Ion 5500 mAh
Body
Build - Glass front, plastic back, plastic frame
Dimensions 159.9 x 73.2 x 7.5 mm (6.30 x 2.88 x 0.30 in) 163.8 x 75.0 x 7.5 or 7.7 mm
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 175 g (6.17 oz) 182 g (6.42 oz)
  IPX4 water resistant RGB ring light around the camera (notifications, charging progress) IP65 dust tight and water resistant (low pressure water jets)
Comms
Bluetooth 5.1, A2DP, LE, aptX HD 5.4, A2DP, LE
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS, BDS, GALILEO, QZSS 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, 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 2400 pixels, 20:9 ratio (~409 ppi density) 1080 x 2392 pixels (~388 ppi density)
Size 6.43 inches, 99.8 cm2 (~85.3% screen-to-body ratio) 6.77 inches, 110.9 cm2 (~90.3% screen-to-body ratio)
Type AMOLED, 90Hz, 430 nits (typ), 600 nits (HBM), 800 nits (peak) AMOLED, 120Hz, HDR, 1300 nits (HBM), 4500 nits (peak)
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
  - Circle to Search
Launch
Announced 2022, April 12 2025, June 20
Status Available. Released 2022, April 15 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 LED flash, HDR, panorama Ring-LED flash, panorama, HDR
Triple 64 MP, f/1.7, 26mm (wide), 1/2.0", 0.7µm, PDAF 2 MP, f/3.3, (microscope) 2 MP, f/2.4, (depth) -
Video 1080p@30fps, gyro-EIS 4K@30fps, 1080p@30fps, gyro-EIS
Memory
Card slot microSDXC No
Internal 128GB 8GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  UFS 2.2 UFS 3.1
Misc
Colors Cosmic Black, Sunset Orange, Dawnlight Gold, Starlight Black Fest Gold, Freestyle White, Nebula Purple
Models CPH2363, CPH2461 -
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 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 5, 8, 38, 40, 41 1, 3, 5, 8, 28, 38, 40, 41
5G bands - 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Speed HSPA, LTE HSPA, LTE, 5G
Technology GSM / HSPA / LTE GSM / HSPA / LTE / 5G
Our Tests
Battery (old) Endurance rating 127h -
Display Contrast ratio: Infinite (nominal) -
Loudspeaker -29.7 LUFS (Average) -
Performance AnTuTu: 289250 (v9) GeekBench: 1653 (v5.1) GFXBench: 7.2fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm SM6225 Snapdragon 680 4G (6 nm) Mediatek Dimensity 7300 (4 nm)
CPU Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver) Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Adreno 610 Mali-G615 MC2
OS Android 12, upgradable to Android 14, ColorOS 14 Android 15, Funtouch 15
Selfie camera
Features Panorama, HDR -
Single 32 MP, f/2.4, 24mm (wide), 1/2.74", 0.8µm 32 MP, f/2.5, (wide)
Video 1080p@30fps, gyro-EIS 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