Samsung Galaxy A51 vs Vivo Y21d 6GB

Key Specs
Display 6.5""
Battery 4000 mAh
Camera 48 MP + 12 MP + 5 MP + 5 MP
Storage 128GB Built-in

Network
TechnologyGSM / HSPA / LTE
2G bandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bandsHSDPA 850 / 900 / 1900 / 2100
 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66
SpeedHSPA 42.2/5.76 Mbps, LTE-A
Launch
Announced2019, December 12
StatusAvailable. Released 2019, December 16
Body
Dimensions158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)
Weight172 g (6.07 oz)
BuildGlass front (Gorilla Glass 3), plastic back, plastic frame
SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Display for Samsung Galaxy A51
TypeSuper AMOLED
Size6.5 inches, 102.0 cm2 (~87.4% screen-to-body ratio)
Resolution1080 x 2400 pixels, 20:9 ratio (~405 ppi density)
ProtectionCorning Gorilla Glass 3
Platform
OSAndroid 10, One UI 2.1
ChipsetExynos 9611 (10nm)
CPUOcta-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPUMali-G72 MP3
Memory
Card slotmicroSDXC (dedicated slot)
Internal 128GB 6GB RAM
 UFS 2.0
Main Camera
Quad48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
12 MP, f/2.2, 123Ëš (ultrawide)
5 MP, f/2.4, (macro)
5 MP, f/2.2, (depth)
FeaturesLED flash, panorama, HDR
Video4K@30fps, 1080p@30/120fps; gyro-EIS
Selfie camera
Single32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm
FeaturesHDR
Video1080p@30fps
Sound
Loudspeaker Yes
3.5mm jack Yes
Comms
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth5.0, A2DP, LE
GPSYes, with A-GPS, GLONASS, GALILEO, BDS
NFCYes
RadioFM radio
USBUSB Type-C 2.0, USB On-The-Go
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compass
 ANT+
Battery
TypeLi-Po 4000 mAh, non-removable
ChargingFast charging 15W
Tests
PerformanceAnTuTu: 113051 (v7), 175363 (v8)
GeekBench: 5401 (v4.4), 1294 (v5.1)
GFXBench: 5.6fps (ES 3.1 onscreen)
DisplayContrast ratio: Infinite (nominal)
CameraPhoto / Video
Loudspeaker-28.6 LUFS (Average)
Audio qualityNoise -93.1dB / Crosstalk -87.3dB
Battery life
Endurance rating 86h
space

VIVO Y21D 6GB

Rs. 49,999

Vivo Y21d 6GB
Key Specs
Display 6.68""
Battery 6500 mAh
Camera 50 MP + 0.08 MP
Storage 128GB Built-in
Network
Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100
4G bands 1, 3, 5, 8, 38, 40, 41
Speed HSPA, LTE
Launch
Announced 2025, September
Status Available. Released 2025, October 7
Body
Dimensions -
Weight -
Build Glass front, plastic frame, plastic back
SIM Nano-SIM + Nano-SIM
Display for Vivo Y21d 6GB
Type IPS LCD
Size 6.68 inches, 102.3 cm2 (~81.8% screen-to-body ratio)
Resolution 1608 × 720 pixels, 20:9 ratio (~270 ppi density)
Platform
OS Android 11, Funtouch 11.1
Chipset Mediatek MT6769 Helio G70 (12 nm)
CPU Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)
GPU Mali-G52 2EEMC2
Memory
Card slot microSDXC (dedicated slot)
Internal 128GB 6GB RAM
Main Camera
Dual 50 MP, f/2.2, (wide), PDAF
0.08 MP, f/2.4, (macro)
Features LED flash
Video 1080p@30fps
Selfie camera
Single 5 MP, f/2.0, (wide)
Video 1080p@30fps
Sound
Loudspeaker Yes
3.5mm jack Yes
Comms
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth 5.0, A2DP, LE
Positioning GPS, GLONASS, GALILEO, BDS
NFC No
Radio FM radio
USB USB Type-C 2.0, OTG
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass
Battery
Type 6500 mAh
Charging 18W wired