See it all on a big, brilliant screen
Immerse yourself in the large 6.4-inch Infinity-U Display of Galaxy A31. A wide aspect ratio fills your screen with content from edge to edge. Watch your favorite videos, games and live streams in vivid FHD+ Super AMOLED.
*Infinity Display: a near bezel-less, full-frontal glass, edge-to-edge screen.
** Measured diagonally, the screen size is 6.4″ in the full rectangle and 6.2″ with accounting for the rounded corners. Actual viewable area is less due to the rounded corners and the camera cutout.
Slim on the outside, big on the inside
Everything you want in a phone in a slim body. Housing a large 5,000mAh(typical) battery in the 8.6 mm-thick device, Galaxy A31 fits right in your hand and comes in a geometric design with a glossy finish. Choose from Prism Crush Black, Prism Crush White, Prism Crush Blue, or Prism Crush Red.
Quad Cam lets you shoot with more perspective
Go ultra high-res with a 48MP Main Cam for crisp, clear photos day and night. A 123° 8MP Ultra Wide Cam captures more of the view. Choose the upgraded 5MP Macro Cam for highly refined close-ups, and make sure the subject always stands out with the 5MP Depth Camera’s multiple Live Focus effects.
Capture more of view from the same spot
Capture the wider world with the Ultra Wide Camera’s wider field of vision. And with the 48MP Main Camera, your story stays bright and clear throughout the day.
* Ultra wide experience (photo/video) is supported for rear camera only.
Macro Cam that captures the up-close details
Quad Cam’s built-in 5MP Macro Cam (40mm) shoots with clarity and quality helping you bring out the ultra-fine details of your close-up shots. Apply natural background blur (Bokeh) to isolate your subject and make it stand out.
* Macro Camera feature supported for rear camera only.
Depth Camera brings your subject into the spotlight
The 5MP Depth Camera lets you adjust the depth of field before and after you nail the shot. It reduces unwanted background noise from your images to make them look more professional.
Live Focus On
Live Focus On
Attention-grabbing selfies made easy
You want your selfie to look good. So for stunning daytime looks, Galaxy A31’s 20MP front camera gives you clear, high-resolution photos. And with Live focus to gently blur the background, your face becomes the star.
Power that keeps you going
When out living life, you need a phone that can last. A 5,000mAh (typical)* battery gives you the power to stream, share and game on. And if you start running low, plug in and power up with 15W Fast Charging.
Give yourself more room to play
Galaxy A31 has fast processing and spacious storage so you can focus on now. An advanced Octa-core processor and 4/6GB of RAM deliver smooth and efficient performance. Download more and delete less with 64GB/128GB internal storage. Add even more with a 512GB microSD card.
* MicroSD card sold separately.
** Actual storage available may vary depending on pre-installed software.
Game Booster gives you the edge
Maximize performance with Game Booster. Cut distractions and up your game with a dedicated interface and easy-to-reach menu. Frame Booster gives graphics smooth, life-like motion. And play at your best as Game Booster learns your usage patterns to optimize battery, temperature and memory.
Defense-grade security available to everyone
Built into the phone’s hardware and software from the start, Samsung Knox protects your phone from the minute it’s turned on. Offering multi-layered security, it defends your most sensitive information from malware and malicious threats.
Your fingerprint is the key
Galaxy A31 comes with high-tech biometric authentication. The On-Screen Fingerprint scanner recognizes your unique fingerprint, so you are the only one who can press and unlock in one easy move.
* If you use a screen protector, make sure it allows for use of the On-screen fingerprint sensor.
An awesome Android experience
Get an awesome Android experience with Google apps fully pre-installed on your Galaxy A31.
- 2GHz, 1.7GHz CPU Speed
- 185 Weight (g)
- Up to 97 Audio Playback Time (Hours)
- 48.0 MP + 5.0 MP + 8.0 MP + 5.0 MP Rear Camera – Resolution (Multiple)
- CPU Speed 2GHz, 1.7GHz
- CPU Type Octa-Core
- Size (Main_Display) 162.1mm (6.4″)
- Resolution (Main Display) 1080 x 2400 (FHD+)
- Technology (Main Display) Super AMOLED
- Color Depth (Main Display) 16M
- Rear Camera – Resolution (Multiple) 48.0 MP + 5.0 MP + 8.0 MP + 5.0 MP
- Rear Camera – F Number (Multiple) F2.0 , F2.4 , F2.2 , F2.4
- Main Camera – Auto Focus Yes
- Rear Camera – OIS No
- Rear Camera Zoom Digital Zoom up to 8x
- Front Camera – Resolution 20.0 MP
- Front Camera – F Number F2.2
- Front Camera – Auto Focus No
- Front Camera – OIS No
- Main Camera – Flash Yes
- Front Camera – Flash No
- Video Recording Resolution FHD (1920 x 1080)@30fps
- RAM_Size (GB) 4
- ROM Size (GB) 128
- Available Memory (GB)* 101.0
- External Memory Support MicroSD (Up to 512GB)
- Number of SIM Dual-SIM
- SIM size Nano-SIM (4FF)
- SIM Slot Type SIM 1 + SIM 2 + MicroSD
- Infra 2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD
- 2G GSM GSM850, GSM900, DCS1800, PCS1900
- 3G UMTS B1(2100), B2(1900), B5(850), B8(900)
- 4G FDD LTE B1(2100), B2(1900), B3(1800), B5(850), B7(2600), B8(900), B20(800)
- 4G TDD LTE B38(2600), B40(2300), B41(2500)
- ANT+ No
- USB Interface USB Type-C
- USB Version USB 2.0
- Location Technology GPS, Glonass, Beidou, Galileo
- Earjack 3.5mm Stereo
- MHL No
- Wi-Fi 802.11 a/b/g/n/ac 2.4+5GHz
- Wi-Fi Direct Yes
- Bluetooth Version Bluetooth v5.0
- NFC Yes
- PC Sync. Smart Switch (PC version)
- OS Android
- General Information
- Form Factor Touchscreen Bar
- Sensors Accelerometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Virtual Proximity Sensing
- Physical specification
- Dimension (HxWxD, mm) 159.3 x 73.1 x 8.6
- Weight (g) 185
- Internet Usage Time(LTE) (Hours) Up to 20
- Internet Usage Time(Wi-Fi) (Hours) Up to 20
- Video Playback Time (Hours) Up to 22
- Battery Capacity (mAh, Typical) 5000
- Removable No
- Audio Playback Time (Hours) Up to 97
- Talk Time (4G LTE) (Hours) Up to 33
- Audio and Video
- Stereo Support No
- Video Playing Format MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM
- Video Playing Resolution FHD (1920 x 1080) @60fps
- Audio Playing Format MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA
- Services and Applications
- Gear Support Galaxy Buds+, Galaxy Buds, Galaxy Fit, Galaxy Fit e, Galaxy Watch, Galaxy Watch Active, Galaxy Watch Active2, Gear Fit, Gear Fit2, Gear Fit2 Pro, Gear Sport, Gear1, Gear2, Gear2 Neo, Gear S, Gear S2, Gear S3, Gear IconX, Gear IconX (2018)
- Samsung DeX Support No
- Mobile TV No