5G
Dynamic AM-OLED
IP68
Smartphone
Samsung SM-G991U Galaxy S21 5G UW Dual SIM TD-LTE US 256GB / SM-G991T (Samsung Unbound M1)
Samsung · Announced Jan 2021
About Samsung Galaxy S21
The Samsung Galaxy S21 presents a compact yet striking form, measuring 71.2 mm wide, 151.7 mm tall and just 7.9 mm thick, while weighing in at a light 171 grams. Its front is dominated by a 6.24‑inch AM‑OLED panel that delivers a crisp 1080 by 2400‑pixel resolution, offering vivid colors and deep contrasts typical of Samsung’s display technology. Powered by Android 11 out of the box and equipped with 8 GiB of RAM, the device is positioned to handle everyday tasks and multitasking with responsiveness.
Inside, a 4000 mAh battery fuels the phone, supporting wired charging at up to 15 watts to replenish power quickly when needed. The handset accommodates a single SIM card, keeping the tray simple and the overall build streamlined. These specifications combine to create a smartphone that balances a premium display, solid performance and practical endurance in a pocket‑friendly package.
Technical Specifications
Display
Size
6.24 inch
Type
Dynamic AM-OLED
Resolution
1080x2400
Color depth
24-bit, 10-bit HDR
Panel
Samsung
Screen-to-body
86.9%
Active area
65 × 144.45 mm
Touch
Capacitive multi-touch sensing screen, 10-point
Punch-hole
Yes
Performance
Processor
Snapdragon 888 5G
CPU
Octa-core, up to 2.8 GHz
GPU
Qualcomm Adreno 660
Process
5 nm
Platform
Google Android
Memory
RAM
8 GiB
Battery
Capacity
4000 mAh
Type
Lithium-ion
Energy
15.52 Wh
Voltage
3.88 V
Charging
15W
Cameras
Main
4032×3024 · 2.2× optical
visibility
Megapixels
12.2
Aperture
ƒ/1.8
Sensor
Samsung ISOCELL Plus S5K2LD · BSI CMOS
Pixel size
1.8 µm
Focus
Phase-Detection Autofocus (PD AF)
Flash
single LED
Stabilization
OIS, EIS
Formats
JPG, HEIF
Features
Electronic Image Stabilizer (EIS), Video Stabilizer (EIS), Optical Image Stabilization (OIS), HDR photo, HDR video, Red-eye effect reduction, Slow motion video, Burst mode, Refocus, Touch focus, +8 more
Ultrawide
13 mm
visibility
Focal length
13 mm
Pixel size
1.4 µm
Main
29 mm
visibility
Focal length
29 mm
Pixel size
0.8 µm
Front
3648×2736
visibility
Megapixels
10
Focal length
26 mm
Sensor
BSI CMOS
Pixel size
1.22 µm
Focus
Phase-Detection Autofocus (PD AF)
Formats
JPG, HEIF
Features
Pixel unification, HDR photo, HDR video, Slow motion video, Burst mode, Touch focus, Panorama Photo, Face detection, Face tagging, Smile detection, +3 more
Dimensions
Size
71.2 × 151.7 × 7.9 mm
Weight
171 g
Water resistance
IP68
Connectivity
Wi-Fi
Wi-Fi 6
Wi-Fi services
DLNA, Miracast, Wi-Fi Direct, Wi-Fi Tethering, WiDi, Wi-Fi Calling (VoWiFi)
Bluetooth profiles
A2DP, A2DP with aptX codec, A2DP with aptX HD codec, AVRCP, DIP, GAVDP, HFP, HID, HSP, MAP, OPP, PAN, PBA, SAP, SPP
USB
USB Type-C reversible
USB services
USB charging, USB fast charging, USB Host, USB On-The-Go 1.3, USB On-The-Go 2.0, USB Power Delivery, USB Power Delivery 2.0, USB Power Delivery 3.0
NFC
NFC A, NFC B
GPS
GPS, GLONASS, Galileo, QZSS
GPS services
Simultaneous GPS (S-GPS), Assisted GPS, Kétfrekvenciás GPS, Geotagging, QuickGPS, QZSS
AV out
DisplayPort (Unspecified) · 3840x2160 (2160p) 4K UHD
NR · 1 bandsTD-NR · 3 bandsLTE · 17 bandsTD-LTE · 6 bandsUMTS · 5 bandsGSM · 4 bands
All NR bands (1)
- NR 600 MHz (N71)
All TD-NR bands (3)
- TD-NR 2500 MHz (N41)
- TD-NR 28 GHz (N261) bands
- TD-NR 39 GHz (N260)
All LTE bands (17)
- LTE 1700/2100 MHz (Band 4, AWS)
- LTE 1700/2100 MHz (Band 66)
- LTE 1800 MHz (Band 3)
- LTE 1900 MHz (Band 2, PCS)
- LTE 1900 MHz (Band 25)
- LTE 2100 MHz (Band 1)
- LTE 2600 MHz (Band 7)
- LTE 600 MHz (Band 71)
- LTE 700 MHz (Band 12)
- LTE 700 MHz (Band 13)
- LTE 700 MHz (Band 28)
- LTE 800 MHz (Band 18)
- LTE 800 MHz (Band 19)
- LTE 800 MHz (Band 20)
- LTE 850 MHz (Band 26)
- LTE 850 MHz (Band 5)
- LTE 900 MHz (Band 8)
All TD-LTE bands (6)
- TD-LTE 1900 MHz (Band 39)
- TD-LTE 2300 MHz (Band XL)
- TD-LTE 2500 MHz (Band XLI)
- TD-LTE 2600 MHz (Band 38)
- TD-LTE 3600 MHz (Band 48)
- TD-LTE 5900 MHz (Band XLVI)
All UMTS bands (5)
- UMTS 1700/2100MHz (Band IV, AWS)
- UMTS 1900MHz (Band II, PCS)
- UMTS 2100MHz (Band I, IMT)
- UMTS 850MHz (Band V, CLR)
- UMTS 900MHz (Band VIII)
All GSM bands (4)
- GSM 1800MHz (B3)
- GSM 1900MHz (PCS, B2)
- GSM 850MHz (B5)
- GSM 900MHz (B8)
Audio
Channels
stereo
Output
USB Type-C
DAC
32-bit / 384 kHz
Sensors
Sensors
Accelerometer, Barometer, Compass, Gyroscope, Hall sensor, Heart rate sensor, In-screen fingerprint sensor, Light intensity sensor, Proximity sensor, Step counter
Features
Fingerprint
Yes (in-screen fingerprint sensor)
SIM
e-SIM (embedded) · Dual standby
Carrier
T-Mobile USA
Markets
North America (NA) (USA)
Extras
Haptic touch feedback
Software extras
Voice Command, Business card recognition, Navigation software, Augmented Reality (AR), Virtual Reality (VR) support, Intelligent personal assistant, Voice Recognition, Face Recognition
Regulatory
HAC
M3, T3
Data status
Final
Model Variants
1 other phones with the same base model: Samsung Galaxy S21
Live Contract Deals
Placeholder
Deals integration coming soon