Samsung Galaxy A51

  • 6.5-inch Super AMOLED screen
  • Quad rear camera
  • Octa-core processor
  • Fast charging capable

Capacity: 128 GB

Colors: Prism Crush Black

Price: $13.34 per month on the AT&T Installment Plan


Size (inches) 6.24 x 2.90 x 0.31
Weight (ounces) 6.07


Display size (inches) 6.5
Resolution (pixels) 2400 x 1080
Colors 16 million

Camera & video

Rear-facing camera Quad Rear Camera: 48MP Wide + 12MP Ultra-Wide + 5MP Macro + 5MP Depth8x digital zoom
Video capture UHD30fps, FHD30fps, HD30fps; MP4, 3GP
Video playback UHD30fps, FHD30fps, HD30fps; MP4, 3GP
Front-facing camera 32 MP
Camera shooting options Food, Hyperlapse, Panorama, Pro, Slow Motion, Super slow-mo, Night, Macro, Video


Battery capacity 4000mAh
Talk time (hours) Up to 28
Standby time (days) Up to 14.5
Audio playback time (hours) Speaker: up to 65, headset: up to 85
Fast charging capable Yes
Time to charge to 50% Up to 50 minutes
Time to charge to 100% Up to 110 minutes


Chipset Samsung Exynos 9611
Cores 8 at Quad 2.3Ghz + Quad 1.7Ghz


Internal memory storage Up to 128GB
Expandable memory storage Up to 512GB
Memory format microSDTM

Operating System

Android® 10.0 
Subject to change based on future operating system updates
Voice dialing and voice commands Yes

Wireless technology

4G LTE Bands 1, 2, 3, 4, 5, 7, 12, 14, 19, 20, 29, 30, 38, 39, and 66
4G HSPA+ with enhanced backhaulTM
3G – UMTS 850/1900/2100MHzTM
GSM/GPRS/EDGE 850/900/1800/1900MHzTM
World phone Quad-band
HD Voice capable Yes
Wi-Fi Calling capable Yes
AT&T Video call capable Yes
Wi-Fi connectivity 802.11a/b/g/n/ac
Wi-Fi-capablity 2.4GHz & 5.0GHz
Bluetooth® technology v5.0
Mobile hotspot Up to 10 devices
Noise suppression NXP
Wireless emergency alerts (CMAS) capable Yes
SIM type Nano


Preloaded apps from AT&T AT&T Call Protect – Deep, AT&T Messages Backup & Sync, AT&T Mobile Security, AT&T Personal Cloud, AT&T ProTech, AT&T Secure Family, AT&T Smart Wi-Fi, AT&T Thanks, AT&T TV, DIRECTV (DTVe)
Preloaded apps from OEM Bixby Routine, Bixby Vision, Bixby Voice, Calculator, Calendar, Galaxy Friends, Galaxy Store, Galaxy Wearable, Office Mobile, One Drive, Samsung Cloud, Samsung Health, Samsung Notes, Samsung Pass, Samsung Pay, Samsung Kids, Outlook
Additional apps Chrome, Drive, Duo, Gmail, Google (Search), Google Pay, Maps, Play Movies & TV, Play Store, YouTube, YouTube Music
myAT&T Provides fast, easy account access virtually anywhere, anytime
Web browser Google Chrome™, Samsung Internet


Sensors Accelerometer, ambient light, fingerprint, gyroscope, proximity, magnetometer, e-compass

Messaging & email

Text messaging Insert pictures, video clips and sound clips easily (messaging charges apply)
Advanced Messaging RCS Universal Profile 1.0 (UP 1.0) compatible for larger file transfers and group messages with other UP 1.0 users. See when messages are delivered, read and when others are typing a response.
Mobile email POP3, IMAP4, Gmail™, Microsoft® Exchange ActiveSync®, SMTP


Music player Google Play™ Music
Supported music formats MP3, MP4, 3GP, AVI, MKV, FLV, AAC, AMR-NB, AMR-WB, WAV, XMF, FLAC, OGG, DSF, DFF and APE


Hearing Aid (HAC) rating M3, T3
Real Time Text (RTT) capable Yes


Device Eco-rating The AT&T Eco-Rating 2.0 system gives you environmental and social details about this device. The system uses a total of 20 performance criteria across 5 different attributes, for a total rating of 1 to 5 stars: 19-20 (5-star), 16-18 (4-star), 13-15 (3-star), 10-12 (2-star), 8-9 (1-star)
Substances of concern 4/4
Environmentally preferable materials 2/3
Energy efficiency and charging 1/1
End of life and recycling 2/2
Environmentally and socially responsible manufacturing 10/10
Total Eco-score 19/20