Samsung Galaxy A31 vs Samsung Galaxy A51: What's the Difference?

Samsung Galaxy A31 is believed to be powered by core MediaTek Helio P65 SoC but Samsung has not confirmed the actual processor, whereas Galaxy A51 uses Exynos 9611 SoC.

Samsung Galaxy A31 vs Samsung Galaxy A51: What's the Difference?

Samsung Galaxy A31 has a notch design while Samsung Galaxy A51 has hole-punch design

  • Samsung Galaxy A31 and Galaxy A51 have in-display fingerprint scanners
  • Samsung has not provided pricing and availability for Galaxy A31
  • Galaxy A31 will come in two variants 4GB + 64GB and 6GB + 128GB

Samsung Galaxy A31 made its debut yesterday, March 24, and is going to be a mid-range smartphone joining the company's Galaxy A-series. It comes with an octa-core processor and a quad rear camera setup that puts it against another smartphone in Samsung's Galaxy A-series, the Galaxy A51. The Galaxy A51 was launched in January and is powered by an octa-core processor as well and boasts of four rear cameras. So, let's see what sets the newer Galaxy A31 apart from the relatively older Galaxy A51.

Galaxy A31 vs Galaxy A51: Price

The Samsung Galaxy A31 was announced on March 24 but Samsung has not shared pricing and availability for the phone as of yet. We do, however, know that it will come in two variants, 4GB + 64GB and 6GB + 128GB. There will be four colour options - Prism Crush Black, Prism Crush Blue, Prism Crush Red, and Prism Crush White.

On the other hand, the Samsung Galaxy A51 comes in only one variant, 6GB + 128GB onboard storage that is priced at Rs. 23,999. It is available in three colour options namely, Prism Crush Black, Prism Crush Blue, and Prism Crush White. The Galaxy A51 is available for purchase from the Samsung store as well as Amazon in India.

Galaxy A31 vs Galaxy A51: Specifications

Samsung hasn't officially stated the Android version in the Galaxy A31 but it is expected to be Android 10. It also packs 6.4-inch full-HD+ (1,080x2,400 pixels) AMOLED display. In contrast, the Galaxy A51 has a slightly larger 6.5-inch Super AMOLED full-HD+ (1,080x2,400 pixels) display.

Under the hood, the Galaxy A31 comes with an unspecified octa-core chip that has two cores clocked at 2.0GHz and six cores clocked at 1.7GHz. Previous reports have suggested that the phone will be powered by a MediaTek Helio P65 SoC. It comes with up to 6GB RAM. The Galaxy A51 is powered by an octa-core Exynos 9611 SoC, coupled with 6GB RAM.

Coming to optics, both phones have four cameras on the back. The Galaxy A31 has a 48-megapixel primary camera with f/2.0 aperture, an 8-megapixel sensor with an ultra-wide-angle lens and f/2.2 aperture, a 5-megapixel depth sensor with f/2.4 lens, and a 5-megapixel macro camera with f/2.5 aperture. On the front, the Galaxy A31 has a 20-megapixel camera with f/2.2 aperture, housed in a notch.

The Galaxy A51, on the other hand, has a 48-megapixel primary sensor with an f/2.0 lens, a 12-megapixel ultra-wide-angle camera with an f/2.0 aperture, a 5-megapixel macro camera with an f/2.4 aperture, and a 5-megapixel depth sensor with an f/2.2 lens. On the front, it has a 32-megapixel selfie shooter with f/2.2 aperture.

Both the Galaxy A31 and Galaxy A51 have a maximum of 128GB onboard storage that can be expanded via microSD card (up to 512GB). There is no official information on connectivity options for the Galaxy A31 as of yet but an FCC listing points at dual-band Wi-Fi - i.e., 2.4GHz and 5GHz - apart from 4G LTE. A Bluetooth SIG certification suggests the presence of Bluetooth v5.0, as well as a USB Type-C port. The Galaxy A51 has 4G VoLTE, Wi-Fi, Bluetooth v5.0, GPS/ A-GPS, and a USB Type-C port. Both phones come with in-display fingerprint scanners.

In terms of battery, the Galaxy A31 has 5,000mAh with support for 15W fast charging while the Galaxy A51 has a smaller 4,500mAh battery but supports 25W fast charging. The former comes in at 159.3x73.1x8.6mm in size and weighs 185 grams while the latter is 158.5x73.6x7.9mm in size and weighs 172 grams.

Samsung Galaxy A31 vs Samsung Galaxy A51 comparison
  Samsung Galaxy A31 Samsung Galaxy A51
Overall NDTV Rating
Design Rating
Display Rating
Software Rating
Performance Rating
Battery Life Rating
Camera Rating
Value for Money Rating
ModelGalaxy A31Galaxy A51
Release dateMarch 24, 2020January 1, 2020
Launched in IndiaYesYes
Dimensions (mm)159.30 x 73.10 x 8.60158.50 x 73.60 x 7.90
Weight (g)185.00172.00
Battery capacity (mAh)50004000
Removable batteryNo-
Fast chargingProprietaryProprietary
Wireless chargingNo-
ColoursPrism Crush Black, Prism Crush Blue, Prism Crush WhitePrism Crush Blue, Prism Crush Black, Prism Crush Pink, Prism Crush White
Screen size (inches)6.406.50
Resolution1080x2400 pixels1080x2400 pixels
Aspect ratio20:9-
Processor2GHz octa-core (2x2GHz + 6x1.7GHz)-
Processor makeMediaTek Helio P65Samsung Exynos 9611
Internal storage128GB128GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)512512
Dedicated microSD slot-Yes
Rear camera48-megapixel (f/2.0) + 8-megapixel (f/2.2) + 5-megapixel (f/2.4) + 5-megapixel (f/2.4)48-megapixel (f/2.0) + 12-megapixel (f/2.2) + 5-megapixel (f/2.2) + 5-megapixel (f/2.4)
Rear autofocusYes-
Rear flashYes-
Front camera20-megapixel (f/2.2)32-megapixel (f/2.2)
Operating systemAndroid 10Android 10
SkinOne UI 2.1One UI 2.0
Wi-Fi standards supported802.11 a/b/g/n802.11 ac
BluetoothYesYes, v 5.00
USB Type-CYesYes
Number of SIMs22
Wi-Fi Direct-Yes
Active 4G on both SIM cards-Yes
SIM TypeNano-SIMNano-SIM
4G/ LTEYesYes
SIM TypeNano-SIMNano-SIM
4G/ LTEYesYes
Face unlockYesYes
In-Display Fingerprint SensorYesYes
Compass/ MagnetometerYesYes
Proximity sensorYesYes
Ambient light sensorYesYes
Fingerprint sensor-Yes
  • Design
  • Display
  • Software
  • Performance
  • Battery Life
  • Camera
  • Value for Money
  • Good
  • Solid battery life
  • Vivid display
  • One UI is good
  • Bad
  • Underwhelming system performance
  • Mediocre cameras
  • Fingerprint sensor isn’t quick
  • Slightly boring design
Display 6.40-inch
Processor MediaTek Helio P65
Front Camera 20-megapixel
Rear Camera 48-megapixel + 8-megapixel + 5-megapixel + 5-megapixel
Storage 128GB
Battery Capacity 5000mAh
OS Android 10
Resolution 1080x2400 pixels
  • Design
  • Display
  • Software
  • Performance
  • Battery Life
  • Camera
  • Value for Money
  • Good
  • Bright, vivid display
  • Clean, feature-rich software
  • Good battery life
  • Bad
  • Biometric authentication isn’t very quick
  • Underwhelming performance for the price
  • Average low-light camera performance
Display 6.50-inch
Front Camera 32-megapixel
Rear Camera 48-megapixel + 12-megapixel + 5-megapixel + 5-megapixel
Storage 128GB
Battery Capacity 4000mAh
OS Android 10
Resolution 1080x2400 pixels

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Vineet Washington writes about gaming, smartphones, audio devices, and new technologies for Gadgets 360, out of Delhi. Vineet is a Senior Sub-editor for Gadgets 360, and has frequently written about gaming on all platforms and new developments in the world of smartphones. In his free time, Vineet likes to play video games, make clay models, play the guitar, watch sketch-comedy, and anime. Vineet is available on, so please send in your leads and tips. More
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