Samsung Galaxy S21 5G The Samsung Galaxy S21 5G is a capable mid-range device, powered by the Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China that comfortably covers most everyday use cases, with a 4,000 mAh battery for solid all-day use (2021).
2021 · Mid-range · Android 11 ⓘ Grades compare this device against others in its own market segment (Flagship), not against every device on the site.
⚡ Quick Specs
Size 6.2" · 151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
RAM 6GB | 8GB
Storage 128GB | 256GB
Main Camera 12 MP · LED flash
⚖️ Compare With
Samsung Galaxy S21 5G vs Samsung Galaxy S20 5G UW Samsung Galaxy S21 5G vs Samsung Galaxy S21+ 5G Samsung Galaxy S21 5G vs Samsung Galaxy Note10 Lite Samsung Galaxy S21 5G vs Samsung Galaxy S20 FE 2022 Samsung Galaxy S21 5G vs Samsung Galaxy Note20 Samsung Galaxy S21 5G vs Samsung Galaxy Note20 5G
✓︎ Pros
✓ Smooth Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China for daily use and light gaming
✓ Sharp 421 PPI screen
✓ 6.2" OLED/AMOLED display with deep blacks and vibrant colours
✓ Lightweight at 169g — easy to carry
✓ 5G capable for fast cellular data
⊗ Cons
✗ 12 MP main camera — basic quality, limited for photography enthusiasts
✗ No headphone jack — requires wireless or USB-C audio
⚠️ Not ideal for
Photography
ℹ️ Overview
Also Known As
Versions: SM-G991B, SM-G991B/DS (International); SM-G991U (USA); SM-G991U1 (USA unlocked); SM-G991W (Canada); SM-G991N (Korea); SM-G9910 (China)
⚙️ Performance
Chipset
Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
Upper-mid performance — fast and capable
CPU
Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
GPU
Mali-G78 MP14 - International Adreno 660 - USA/China
OS
Android 11, up to 4 major Android upgrades, One UI 7
RAM
6GB | 8GB
Fine for everyday apps
💻 Display
Sharpness
421 ppi
Sharp and comfortable to read
Panel
Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
OLED: perfect blacks, vivid colours, power-efficient
Protection
Corning Gorilla Glass Victus
📷 Camera
Main Camera
12 MP
Capable for everyday photos
Multi-Camera Setup
12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video
Main Video
8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Main Camera Features
LED flash, auto-HDR, panorama
🔋 Battery
Capacity
4,000 mAh
Adequate for moderate use
Charging
25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
📱 Design & Build
Weight
169g
Balanced size and weight
Dimensions
151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
Build
Glass front (Gorilla Glass Victus), plastic back, aluminum frame
SIM
· Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Colors
Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
Sensors
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
📶 Network
Technology
GSM / CDMA / HSPA / EVDO / LTE / 5G
Speed
HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
2G Bands
GSM 850 / 900 / 1800 / 1900
3G Bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
📡 Connectivity
WiFi
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
GPS
GPS, GLONASS, BDS, GALILEO
🔊 Sound
Loudspeaker
Yes, with stereo speakers
Radio
FM radio (Snapdragon model only; market/operator dependent)
❓ Frequently Asked Questions
Does the Samsung Galaxy S21 5G support 5G?› Yes, the Samsung Galaxy S21 5G supports 5G connectivity.
Does the Samsung Galaxy S21 5G support eSIM?› Yes, the Samsung Galaxy S21 5G supports eSIM.
Does the Samsung Galaxy S21 5G have NFC?› Yes, the Samsung Galaxy S21 5G has NFC for contactless payments and pairing.
Does the Samsung Galaxy S21 5G support wireless charging?› Yes, the Samsung Galaxy S21 5G supports wireless charging (25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless).
Does the Samsung Galaxy S21 5G support reverse wireless charging?› Yes, the Samsung Galaxy S21 5G can wirelessly charge other devices.
Does the Samsung Galaxy S21 5G support fast charging?› Yes, up to 25W (25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless).
Is the Samsung Galaxy S21 5G waterproof? What is the IP rating?› The Samsung Galaxy S21 5G is rated IP68 — IP68 dust tight and water resistant (immersible up to 1.5m for 30 min).
Does the Samsung Galaxy S21 5G have expandable storage?› No, the Samsung Galaxy S21 5G does not support a memory card.
Does the Samsung Galaxy S21 5G support dual SIM?› The Samsung Galaxy S21 5G SIM configuration: · Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time).
Does the Samsung Galaxy S21 5G have a headphone jack?› No, the Samsung Galaxy S21 5G does not have a 3.5mm headphone jack.
Does the Samsung Galaxy S21 5G have stereo speakers?› Yes, the Samsung Galaxy S21 5G has stereo speakers.
What Android version does the Samsung Galaxy S21 5G ship with?› The Samsung Galaxy S21 5G ships with Android 11, up to 4 major Android upgrades, One UI 7.
What type of USB port does the Samsung Galaxy S21 5G use?› The Samsung Galaxy S21 5G uses USB Type-C 3.2, OTG.
Does the Samsung Galaxy S21 5G support Wi-Fi 7?› The Samsung Galaxy S21 5G supports Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct.
Does the Samsung Galaxy S21 5G support Bluetooth LE Audio?› The Samsung Galaxy S21 5G has 5.0, A2DP, LE.
