Samsung Galaxy A51 vs realme X2 Pro Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

7.0
Samsung Galaxy A51	realme X2 Pro
Released · Dec 27, 2019	Released · October 2019
6.5-inch · 2400x1080px	6.5-inch · 2400x1080px
Quad camera	Quad camera
4GB · 128GB	6GB · 64GB
4000 mAh	4000 mAh
Check prices

Design

Dimensions
6.24 x 2.90 x 0.31 inches 158.5 x 73.6 x 7.9 mm	6.34 x 2.98 x 0.34 inches 161 x 75.7 x 8.7 mm
Weight
6.07 oz (172.0 g)	7.02 oz (199.0 g)
Materials
Back: Plastic Frame: Plastic	Back: Glass (Corning Gorilla Glass 5) Frame: Aluminum
Biometrics
2D Face unlock, Optical in-screen fingerprint	Optical in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Left: Volume control; Right: Lock/Unlock key
Colors
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue	Neptune blue, Lunar white

Display

Size
6.5-inch	6.5-inch
Resolution
2400x1080px, 20:9 ratio, 405 PPI	2400x1080px, 20:9 ratio, 405 PPI
Technology
Super AMOLED	Super AMOLED
Refresh rate
60Hz	90Hz
Screen-to-body
87.37 %	83.69 %
Peak brightness
	1000 cd/m2 (nit)
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
Samsung Exynos 9611 (10 nm)	Qualcomm Snapdragon 855+ SM8150-AC (7 nm)
Processor
Octa-core 2300 MHz 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53	Octa-core Kryo 485
GPU
Mali-G72 MP3	Adreno 640
RAM
4GB (LPDDR4)	6GB (LPDDR4)
Internal storage
128GB, available to use: 105.9 GB	64GB
Storage expansion
microSDXC up to 512 GB	not expandable
OS
Android (11, 10), Samsung One UI	Android (9.0 Pie), ColorOS UI

Battery

Capacity
4000 mAh	4000 mAh
Type
Li - Polymer	Li - Polymer
Charging
Fast charging	OPPO VOOC
Charge speed
	Wired: 50.0W

Battery Life Estimate

5h 22min

Browsing

11h 35min

Video

8h 35min

Gaming

6h 40min

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Camera

Rear
Quad camera	Quad camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	64 MP (PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.7" Pixel size: 0.8 μm
Second camera
12 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm Pixel size: 1.12 μm	8 MP (Ultra-wide, PDAF) Aperture size: F2.4 Focal Length: 16 mm Sensor size: 1/3.2" Pixel size: 1.4 μm
Third camera
5 MP (Macro) Aperture size: F2.4 Focal Length: 40 mm	13 MP (Telephoto, PDAF) Optical zoom: 2.0x Aperture size: F2.5 Focal Length: 52 mm Sensor size: 1/3.4" Pixel size: 1 μm
Fourth camera
5 MP (Depth information) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm	2 MP (Depth information) Aperture size: F2.4 Sensor size: 1/5" Pixel size: 1.75 μm
Flash
LED	Dual LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps) Hyperlapse, EIS	3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps) EIS
Front
32 MP (HDR), Video capture: 1920x1080 (Full HD)	16 MP (EIS), Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Galileo, BeiDou, Dual-band positioning, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)	Accelerometer, Gyroscope, Compass
Other
NFC, ANT+	NFC

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
Dolby Atmos	Dolby Atmos
Screen mirroring
Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)
4G (TDD)
Bands 38(2600), 39(1900+), 41(2600+)	Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 6(800), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Nov 28, 2019 FCC ID value: A3LSMA515FN
Measured SAR
Head: 0.89 W/kg Body: 1.18 W/kg Simultaneous Transmission: 1.56 W/kg Wireless Router: 1.12 W/kg Phablet: 2.76 W/kg

Buyers information

MSRP
$ 400
In The Box
	Type-C cable, Flash charge adapter, Phone protection case, SIM card needle, Quick start guide, Warranty card

Availability

Officially announced
Dec 12, 2019

Alternative variants

with 128GB storage


RAM	6GB
Internal storage	128GB

with 128 GB storage


RAM	8GB
Internal storage	128GB

for Verizon


4G (FDD)	Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 13(700 c), 20(800 DD), 28(700 APT), 66(AWS-3)
3G	Bands 5(850), 8(900), 2(1900), 1(2100)

with 256 GB storage


RAM	12GB
Internal storage	256GB

for AT&T


4G (FDD)	Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD)	Bands 41(2600+)

for Sprint


4G (FDD)	Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD)	Bands 41(2600+)

for Europe


4G (FDD)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)
4G (TDD)	Bands 38(2600), 40(2300), 41(2600+)
Dual SIM	Yes

Links

Full specifications
Samsung Galaxy A51 Specs	realme X2 Pro Specs
PhoneArena Review
Samsung Galaxy A51 Review
User Reviews
Samsung Galaxy A51 User Reviews