Samsung Galaxy M30 vs Samsung Galaxy A21s
Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone specs comparison tool or pick a popular device from the ones below.
Display
Size
Resolution
Technology
Super AMOLED
TFT
Screen-to-body
86.66 %
82.94 %
Colors
16 777 216
Features
Proximity sensor
Proximity sensor
Hardware
System chip
Samsung Exynos 7 Octa 7904
Samsung Exynos 850
Processor
GPU
Mali-G71 MP2
Mali-G76
RAM
Internal storage
128GB, available to use: 107.6 GB
32GB (eMMC 5.1), available to use: 19.5 GB
Storage expansion
microSDXC up to 512 GB
microSDXC up to 512 GB
Device type
Smartphone
Smartphone
OS
Android (9.0 Pie, 8.1 Oreo), Samsung One UI
Android (10), Samsung One UI
Battery
Capacity
5000 mAh
5000 mAh
Type
Not user replaceable
Li - Polymer, Not user replaceable
Charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging
Fast charging
Camera
Rear
Triple camera
Quad camera
Main camera
Specifications
Aperture size: F1.9; Focal length: 27 mm; Sensor size: 1/3.1"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera
5 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm
Third camera
5 MP (Depth information)
2 MP (Macro)
Specifications
Aperture size: F2.2
Aperture size: F2.4
Fourth camera
2 MP (Depth information)
Specifications
Aperture size: F2.4
Video recording
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
Features
Video calling, Video sharing
Front
16 MP
13 MP
Design
Dimensions
Weight
the average is 6.3 oz (179 g)
the average is 6.3 oz (179 g)
Materials
Back: Plastic
Biometrics
2D Face unlock, Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Features
Soft keys
Keys
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors
Black, Blue
Black, White, Blue, Red
Cellular
LTE (FDD)
Bands 1(2100), 3(1800), 5(850), 8(900), 20(800 DD)
Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
LTE (TDD)
Bands 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
UMTS
850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
Data Speed
Dual SIM
Yes
Yes
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
Screen mirroring
Wireless screen share
Wireless screen share
Radio
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
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features
Mass storage device, Charging
Charging
Location
GPS, A-GPS, Glonass, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope
Other
VoIP, Tethering, Computer sync, OTA sync
NFC
Phone features
Notifications
Haptic feedback, Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording
Regulatory Approval
Measured SAR
Head
0.28 W/kg
Body
0.39 W/kg
Simultaneous Transmission
1.24 W/kg
Wireless Router
0.93 W/kg
Availability
Officially announced
Feb 27, 2019
May 15, 2020
