Samsung Galaxy A7 (2018) vs Samsung Galaxy A51
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Display
Size
Resolution
Technology
Super AMOLED
Super AMOLED
Screen-to-body
74.55 %
87.37 %
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Hardware
System chip
Samsung Exynos 7 Octa 7885
Samsung Exynos 9611
Processor
GPU
Mali-G71 MP2
Mali-G72 MP3
RAM
Internal storage
128GB
128GB, available to use: 105.9 GB
Storage expansion
microSDXC up to 512 GB
microSDXC up to 512 GB
OS
Android (9.0 Pie, 8.0 Oreo), Samsung One UI
Android (10), Samsung One UI
Battery
Capacity
3300 mAh
4000 mAh
Type
Not user replaceable
Li - Polymer, Not user replaceable
Charging
Fast charging
Camera
Rear
Triple camera
Quad camera
Main camera
Specifications
Aperture size: F1.7; Focal length: 26 mm; Sensor size: 1/2.8"; Pixel size: 0.9 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide, Autofocus, CMOS image sensor, BSI sensor)
12 MP (Ultra-wide)
Specifications
Aperture size: F2.4; Focal Length: 18 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm
Third camera
5 MP (Depth information)
5 MP (Macro)
Specifications
Aperture size: F2.2; Focal Length: 24 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.4; Focal Length: 40 mm
Fourth camera
5 MP (Depth information)
Specifications
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Video recording
1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features
Hyperlapse, EIS, Video calling, Video sharing
Hyperlapse, EIS
Front
24 MP (Flash)
32 MP (HDR)
Design
Dimensions
Weight
the average is 6.2 oz (176 g)
the average is 6.2 oz (176 g)
Materials
Back: Glass (Corning Gorilla Glass 3); Frame: Plastic
Back: Plastic; Frame: Plastic
Biometrics
Fingerprint (touch)
2D Face unlock, In-screen fingerprint
Features
Notification light
Colors
Black, Gold, Pink, Blue
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue
Cellular
LTE (FDD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
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)
LTE (TDD)
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 41(2600+)
UMTS
850, 900, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data Speed
SIM type
Nano SIM
Nano SIM
VoLTE
Yes
Multimedia
Headphones
3.5mm jack
3.5mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features
Album art cover, Background playback, Dolby Atmos
Dolby Atmos
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
FM
Additional microphone(s)
for Noise cancellation
Connectivity & Features
Bluetooth
5.0
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band; Hotspot, Wi-Fi Direct
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB
microUSB, USB 2.0
Type-C (reversible), USB 2.0
Features
Mass storage device, Charging
Charging, OTG
Location
GPS, A-GPS, Glonass, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
NFC, ANT+
Phone features
Notifications
Haptic feedback, Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording
Regulatory Approval
FCC approval
Date approved
Sep 13, 2018
Nov 28, 2019
Measured SAR
Head
0.50 W/kg
0.89 W/kg
Body
0.39 W/kg
1.18 W/kg
Simultaneous Transmission
1.59 W/kg
1.56 W/kg
Wireless Router
1.05 W/kg
1.12 W/kg
Phablet
2.76 W/kg
Buyers information
In The Box
Charger, microUSB cable, Headphones, SIM Removal Tool, Documentation
Price
$ 400
