Samsung Galaxy Note 20 Ultra vs Samsung Galaxy A51

Key Specs
Display6.9"
Battery4500 mAh
Camera108 MP + 12 MP + 12 MP
Storage512GB Built-in
Network
TechnologyGSM / CDMA / HSPA / EVDO / LTE
2G bandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
CDMA 800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
CDMA2000 1xEV-DO
4G bandsLTE
SpeedHSPA 42.2/5.76 Mbps, LTE-A (7CA) Cat20 2000/200 Mbps
Launch
Announced2020, August 05
StatusRelease on, August 28
Body
Dimensions164.8 x 77.2 x 8.1 mm (6.49 x 3.04 x 0.32 in)
Weight208 g (7.34 oz)
BuildGlass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), stainless steel frame
SIMSingle SIM (Nano-SIM and/or eSIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
Samsung Pay (Visa, MasterCard certified)
IP68 dust/water resistant (up to 1.5m for 30 mins)
Stylus, 9ms latency (Bluetooth integration, accelerometer, gyro)
Display for Samsung Galaxy Note 20 Ultra
TypeDynamic AMOLED 2X capacitive touchscreen, 16M colors
Size6.9 inches, 117.7 cm2 (~92.5% screen-to-body ratio)
Resolution1440 x 3088 pixels (~494 ppi density)
ProtectionCorning Gorilla Glass Victus
HDR10+
Always-on display
120Hz@FHD/60Hz@QHD refresh rate
Platform
OSAndroid 10, One UI 2.1
ChipsetExynos 990 (7 nm+) - Global
Qualcomm SM8250 Snapdragon 865+ (7 nm+) - USA
CPUOcta-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) - Global
Octa-core (1x3.00 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585) - USA
GPUMali-G77 MP11 - Global
Adreno 650 - USA
Memory
Card slotmicroSDXC (uses shared SIM slot)
Internal256GB 8GB RAM
UFS 3.1
Main Camera
Triple108 MP, f/1.8, 26mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS
12 MP, f/3.0, 103mm (periscope telephoto), 1.0µm, PDAF, OIS, 5x optical zoom, 50x hybrid zoom
12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm
FeaturesLED flash, auto-HDR, panorama
Video8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS
Selfie camera
Single10 MP, f/2.2, 26mm (wide), 1/3.2", 1.22µm, Dual Pixel PDAF
FeaturesDual video call, Auto-HDR
Video4K@30/60fps, 1080p@30fps
Sound
LoudspeakerYes, with stereo speakers
3.5mm jackNo
32-bit/384kHz audio
Tuned by AKG
Comms
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot
Bluetooth5.0, A2DP, LE, aptX
GPSYes, with A-GPS, GLONASS, BDS, GALILEO
NFCYes
RadioFM radio (Snapdragon model only; market/operator dependent)
USB3.2, Type-C 1.0 reversible connector, USB On-The-Go
Features
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Samsung Wireless DeX (desktop experience support)
ANT+
Bixby natural language commands and dictation
Battery
Non-removable Li-Ion 4500 mAh battery
ChargingFast charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging
Reverse wireless charging 9W
Key Specs
Display6.5"
Battery4000 mAh
Camera48 MP + 12 MP + 5 MP + 5 MP
Storage128GB 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)
Internal128GB 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
LoudspeakerYes
3.5mm jackYes
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