Samsung Galaxy A51 5G UW vs Samsung Galaxy A42 5G

General Info

Manufacturer
Samsung	Samsung
Announced
August 2020	2020, September 02
Status
Available - August 2020	Available. Released 2020, November 11
Colors
Prism Bricks Blue	Prism Dot Black, Prism Dot White, Prism Dot Gray
Form Factor
Candybar	Candybar
Dimension
158.8 x 73.4 x 8.6 mm (6.25 x 2.89 x 0.34 in)	164.4 x 75.9 x 8.6 mm (6.47 x 2.99 x 0.34 in)
Weight
188.8 g (6.63.0.28 oz)	193 g (6.81 oz)
SIM Type
Pre-installed Nano-SIM	Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network
2, 4, 5, 13, 66	1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41 - Europe 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 34, 38, 39, 40, 41
5G Network
260, 261 mmWave	1, 3, 5, 7, 8, 28, 40, 41, 78 SA/NSA/Sub6 - Europe 1, 3, 5, 7, 8, 28, 40, 41, 78, 79 SA/NSA/Sub6
SAR EU
0.59 W/kg (head) 1.32 W/kg (body)	- W/kg (head) - W/kg (body)
Messaging

Build Features
- Fingerprint Sensor (under display, optical)	- Fingerprint Sensor (under display, optical)

OS
Android 10	Android 10, upgradable to Android 11, One UI 3.1
User Interface
One UI 2.0	One UI 2.1
Processor
Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver), Qualcomm SDM765 Snapdragon 765G (7 nm) [Similar]	Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570), Qualcomm SM7225 Snapdragon 750 5G (8 nm) [Similar]
GPU
Adreno 620 [Similar]	Adreno 619 [Similar]
RAM
6 GB [Browse Similar]	8 GB [Browse Similar]
Internal Memory
128 GB	128 GB
External Memory
microSDXC (uses shared SIM slot)	microSDXC

Type
Super AMOLED Capacitive Touchscreen Corning Gorilla Glass 3	HD+ Super AMOLED capacitive touchscreen
Colors
16M colors	16M Colour
Size
6.5 inches [Similar]	6.6 inches [Similar]
Resolution
1080 x 2400 pixels (405 ppi)	720 x 1600 pixels (266 ppi)
Screen-to-Body Ratio
87.47%	84.18%
Multi-Touch

Rear Camera
48 MP + 12 MP + 5 MP + 5 MP [Similar]	48 MP + 8 MP + 5 MP + 5 MP [Similar]
Flash
LED flash	LED Flash
Features
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 123˚ (ultrawide) 5 MP, f/2.4, (macro) 5 MP, f/2.2, (depth) panorama, HDR	48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (depth) 5 MP, f/2.4, (macro) Panorama, HDR
Video
4K@30fps, 1080p@30/120fps; gyro-EIS	4K@30fps, 1080p@30fps, 720p@480fps
Front Camera
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar]	20 MP, f/2.2, 0.8µm HDR 1080p@30fps [Similar]

GPRS
Yes	Yes
Edge
Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE-A, 5G	HSPA 42.2/5.76 Mbps, LTE-A, 5G
Bluetooth
5.0, A2DP, LE	5.0, A2DP, LE
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB
2.0, Type-C 1.0 reversible connector, USB On-The-Go	2.0, Type-C 1.0 reversible connector
GPS
Yes, with A-GPS, GLONASS, GALILEO, BDS	Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser
Yes	Yes

Internal
128 GB, 6 GB RAM	128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 128 GB, 4 GB RAM UFS 2.1
Expandable Storage
microSDXC (uses shared SIM slot)	microSDXC
USB OTG
Supported	Supported

Fingerprint

Proximity Sensor

Accelerometer Sensor

Magnetic-field Sensor (Compass)

Gyroscope Sensor

NFC

Type
Non-removable Li-Po Battery Fast battery charging 15W	Non-removable Li-Po Battery Fast battery charging 15W
Capacity
4500 mAh	5000 mAh
Stand by
-	-
Talk Time
-	-