Samsung Galaxy M30 vs Galaxy S21 5G

Specs compared side by side, measured on real phones shared by owners with the Device Info app.

Samsung Galaxy M30Samsung Galaxy M30Exynos 7904Change
Samsung Galaxy S21 5GSamsung Galaxy S21 5GSnapdragon 888Exynos 21002 chip versionsChange

Key differences

  1. Chipset: the Galaxy M30 uses the Exynos 7904 (14 nm), the Galaxy S21 5G the Exynos 2100 (5 nm Samsung). The Galaxy M30's fastest core runs at 1.77 GHz, the Galaxy S21 5G's at 2.91 GHz.
  2. Screen: 6.4 inches on the Galaxy M30, 6.2 inches on the Galaxy S21 5G. Up to 60 Hz on the Galaxy M30, 120 Hz on the Galaxy S21 5G.
  3. Battery: 4,900 mAh on the Galaxy M30, 3,880 mAh on the Galaxy S21 5G.
  4. Main camera: 12.8 MP on the Galaxy M30, 12.2 MP on the Galaxy S21 5G.

The same on both: Widevine L1.

Chipset

Chipset
Exynos 7904Exynos 2100
Process
14 nm5 nm Samsung
CPU
2× 1.77 GHz Cortex-A73
6× 1.59 GHz Cortex-A531× 2.91 GHz Cortex-X1
3× 2.81 GHz Cortex-A78
4× 2.21 GHz Cortex-A55
Top CPU speed
1.77 GHz2.91 GHz
CPU cores
88
GPU
Mali-G71Mali-G78

Memory

Versions seen
3GB | 32GB8GB | 128GB
8GB | 256GB
RAM type
LPDDR4LPDDR5

Display

Size
6.4 in6.2 in
Resolution
1080 × 23401080 × 2400
Pixel density
404 ppi423 ppi
Refresh rates
60 Hz120 Hzalso 48, 60, 96
HDR
—HDR10, HDR10+, HLG

Battery

Capacity
4,900 mAh3,880 mAh

Cameras

Back camera 1
12.8 MP4128 × 3096 · f/1.9 · 3.58 mm · OIS12.2 MP4032 × 3024 · f/1.8 · 5.4 mm · OIS
Back camera 2
—12.2 MP4032 × 3024 · f/2.2 · 2.2 mm
Front camera 1
15.9 MP4608 × 3456 · f/1.9 · 3.4 mm · OIS10 MP3648 × 2736 · f/2.2 · 3.3 mm
Front camera 2
—7.1 MP3216 × 2208 · f/2.2 · 3.3 mm

Megapixels are what Android reports to apps. Many phones combine pixels by default, so the advertised megapixels can be higher.

Connectivity

Wi-Fi
—Wi-Fi 6
6 GHz Wi-Fi
—No
Bluetooth LE Audio
—No
NFC
NoYes
UWB
NoNo
USB host
YesYes

Software

Android
Android 10Android 15
UI
—One UI 7.0
Released with
Android 8.1Android 11
Widevine DRM
L1L1

Sensors

Sensors
19 sensors42 sensors
Galaxy M30 full specs Galaxy S21 5G full specs

See every detail of your own phone

Device Info is free on Google Play. Share your phone's report in two taps.

Get it on Google Play
From phones shared with the Device Info app · updated November 2026 Hardware specs only. No personal data. Privacy