Product
Samsung Galaxy A8s
Samsung Galaxy A8s
Vivo Y400 Pro
Vivo Y400 Pro
Battery
Charging 18W wired 90W wired, 50% in 19 min 6W reverse wired
Type Li-Ion 3400 mAh, non-removable Li-Ion 5500 mAh
Body
Build Glass front (Gorilla Glass 3), glass back (Gorilla Glass 5), aluminum frame Glass front, plastic back, plastic frame
Dimensions 158.4 x 74.9 x 7.4 mm (6.24 x 2.95 x 0.29 in) 163.8 x 75.0 x 7.5 or 7.7 mm
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 173 g (6.10 oz) 182 g (6.42 oz)
  - IP65 dust tight and water resistant (low pressure water jets)
Comms
Bluetooth 5.0, A2DP, EDR, LE 5.4, A2DP, LE
Infrared port - Yes
NFC Yes No
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS, QZSS
Radio No No
USB USB Type-C 2.0 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 3 -
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) 1080 x 2392 pixels (~388 ppi density)
Size 6.4 inches, 100.5 cm2 (~84.7% screen-to-body ratio) 6.77 inches, 110.9 cm2 (~90.3% screen-to-body ratio)
Type PLS LCD AMOLED, 120Hz, HDR, 1300 nits (HBM), 4500 nits (peak)
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
  ANT+ Samsung Pay Circle to Search
Launch
Announced 2018, December. Released 2018, December 2025, June 20
Status Discontinued 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, panorama, HDR Ring-LED flash, panorama, HDR
Triple 24 MP, f/1.7, 27mm (wide), 1/2.8", 0.9µm, PDAF 10 MP f/2.4, 52mm (telephoto), 1/3.9", 1.0µm, AF, 2x optical zoom 5 MP, f/2.2, (depth) -
Video 4K@30fps, 1080p@30/240fps 4K@30fps, 1080p@30fps, gyro-EIS
Memory
Card slot No No
Internal 128GB 6GB RAM, 128GB 8GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  - UFS 3.1
Misc
Colors Black, Gradient Black, Blue, Pink-Blue, Yellow-Pink Fest Gold, Freestyle White, Nebula Purple
Models SM-G8870, SM-G887F, SM-G887N, SM-A8s -
SAR - 0.90 W/kg (head)    
SAR EU 0.24 W/kg (head)     1.17 W/kg (body)     0.85 W/kg (head)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 4, 5, 7, 8, 12, 17, 34, 38, 39, 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 / CDMA / HSPA / LTE GSM / HSPA / LTE / 5G
  CDMA 800 & TD-SCDMA -
Platform
Chipset Qualcomm SDM710 Snapdragon 710 (10 nm) Mediatek Dimensity 7300 (4 nm)
CPU Octa-core (2x2.2 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver) Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Adreno 616 Mali-G615 MC2
OS Android 9.0 (Pie), One UI Android 15, Funtouch 15
Selfie camera
Features HDR -
Single 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm 32 MP, f/2.5, (wide)
Video 1080p@30fps 4K@30fps, 1080p@30fps
Sound
3.5mm jack No No
Loudspeaker Yes Yes, with stereo speakers
  24-bit/192kHz Hi-Res & Hi-Res wireless audio