Samsung Galaxy A51

Not to be confused with Samsung Galaxy M51.
Samsung Galaxy A51
Samsung Galaxy A51 5G
BrandSamsung
ManufacturerSamsung Electronics
TypePhablet
SeriesGalaxy A
FamilySamsung Galaxy
First released4G: December 16, 2019 (2019-12-16)
Availability by region4G: December 16, 2019 (2019-12-16)
5G: April 29, 2020 (2020-04-29)
5G UW: August 14, 2020 (2020-08-14)
DiscontinuedApril 9, 2020 (2020-04-09)
PredecessorSamsung Galaxy A50
SuccessorSamsung Galaxy A52
RelatedSamsung Galaxy A31
Samsung Galaxy A71
Compatible networks2G / 3G / 4G / 5G
Form factorSlate
Dimensions4G:
158.5 mm (6.24 in) H
73.6 mm (2.90 in) W
7.9 mm (0.31 in) D
5G:
158.9 mm (6.26 in) H
73.6 mm (2.90 in) W
8.7 mm (0.34 in) D
5G UW:
158.8 mm (6.25 in) H
73.4 mm (2.89 in) W
8.6 mm (0.34 in) D
Weight4G: 172 g (6.1 oz)
5G: 187 g (6.6 oz)
5G UW: 188.8 g (6.66 oz)
Operating systemOriginal: Android 10 with One UI 2.0
Current: Android 13 with One UI 5.1
System-on-chip4G: Exynos 9611
5G (International): Exynos 980
5G (Japan)/5G UW: Qualcomm Snapdragon 765G
CPUOcta-core
4G: 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53
5G (International): 2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex-A55
5G (Japan)/5G UW: 1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver
GPU4G: Mali-G72 MP3
5G (International): Mali-G76 MP5
5G (Japan)/5G UW: Adreno 620
Memory4G: 4, 6, or 8 GB RAM
5G: 6 or 8 GB RAM
Storage4G: 64, 128, or 256[1] GB
5G: 128 GB
Removable storagemicroSDXC
4G: Expandable up to 512 GB
5G: Expandable up to 1 TB
BatteryLithium polymer (non-removable)
4G: 4000 mAh
5G: 4500 mAh
Charging15W Fast Charging
Rear camera
  • 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8μm, PDAF
  • 12 MP, f/2.2, 123˚ (ultrawide)
  • 5 MP, f/2.4, (macro)
  • 5 MP, f/2.4, (depth)
  • LED flash, panorama, HDR
    4K@30fps, 1080p@30/120fps; gyro-EIS
Front camera32 MP, f/2.2, 26mm (wide), 1/2.74", 0.8μm
HDR, 4K@30fps, 1080p@30fps
Display6.5 in (17 cm) Super AMOLED FHD+ 1080 x 2400 pixels, 20:9 ratio (~405 ppi density)
SoundLoudspeaker, 3.5 mm auxiliary (headphone jack)
ConnectivityWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot, Bluetooth 5.0
FeliCa (Japanese models only)
Data inputsUSB Type-C
ModelInternational models:
SM-A515x (4G)
SM-A516x (5G)
(last letter varies by carrier and international models)
Japanese models:
SCG07 (au, 5G)
SC-54A (NTT Docomo, 5G)
SAR0.80 W/kg (head)
0.67 W/kg (body)
OtherOptical fingerprint sensor (in display), accelerometer, gyro, proximity, compass
WebsiteGalaxy A51
References[2][3][4]

The Samsung Galaxy A51 is a mid-range Android-based smartphone manufactured, developed and marketed by Samsung Electronics as part of its Galaxy A series. It was announced on December 12, 2019 and released on December 16, 2019.[5][6]

Like the Galaxy A71, it also had two 5G versions: with UW and without UW. The latter was announced on April 2020,[7] while the former was announced and released on August 2020.[8]

Specifications

Design

Similar to the Galaxy A71, it features a plastic back and plastic frame for the LTE variant, while the 5G variants feature an aluminum frame and a plastic back.[9] The back pattern varies by variant: the LTE model features a prism crystal pattern,[10] the 5G non-UW model has a two-tone design,[11] and the 5G UW model having a brick-styled pattern.[12]

Galaxy A51 LTE Galaxy A51 5G Galaxy A51 5G UW
  • Prism Crush Black
  • Prism Crush White
  • Prism Crush Pink
  • Prism Crush Blue
  • Prism Cube Black
  • Prism Cube White
  • Prism Cube Pink
  • Prism Bricks Blue

Hardware

Display

All variants of the Galaxy A51 have a 6.5 in Super AMOLED Infinity O display with an FHD+ 1080 × 2400 pixel resolution, a 20:9 aspect ratio, and a pixel density of ~405 PPI.[13] The front glass is constructed of Corning Gorilla Glass 3.[14]

Cameras

All variants have a quad camera setup arranged in an "L" shape located in the corner with a rectangular protrusion. The array consists of a 48 MP wide angle camera, a 12 MP ultrawide camera, a 5 MP macro camera, and a 5 MP depth sensor. It also has a single 32 MP front facing camera, which sits in a small punch hole on the front of the screen.[10][11]

Both the front and rear facing cameras can record video up to 4K@30 fps, as well as 1080p@30/120 fps.

Processor and Memory

The LTE variant is powered by the Samsung Exynos 9611 octa-core SoC,[10] the 5G non-UW variant is powered by the Samsung Exynos 980 SoC,[11] and the 5G UW variant is powered by the Qualcomm Snapdragon 765G SoC.[12]

RAM options vary from 4 GB to 8 GB for the LTE variant and 6 GB or 8 GB for the 5G variants. Storage options for the LTE variant are available in either 64 or 128 GB, while the 5G variants are only available in 128 GB. Storage can be expanded with a microSD card up to 512 GB.

Battery

It comes with a non-removable 4000 mAh (for the LTE variant) or 4500 mAh (for the 5G variants) lithium polymer battery and 15W Fast Charging.

Software

All variants of the Galaxy A51 originally came with Android 10 and One UI 2.0. On 18 August 2020, Samsung announced that all variants of the Galaxy A51 would be supported for three generations of Android software updates, and 4 years of security updates. It also became one of the first Galaxy A series device (alongside Galaxy A71 and Galaxy A90 5G) to have a longer software support.[15]

Pre-installed OS OS Upgrades history End of support
1st 2nd 3rd
A51 LTE Android 10
(One UI 2.0) 		Android 11
(One UI 3.0)
February 2021[16]
(One UI 3.1)
March 2021[17] 		Android 12
(One UI 4.1)
March 2022[18] 		Android 13
(One UI 5.0)
December 2022[19] 		February 2024[20]
A51 5G Android 11
(One UI 3.0)
February 2021[21]
(One UI 3.1)
March 2021[22] 		Android 13
(One UI 5.0)
December 2022[23]
(One UI 5.1)
March 2023[24]
A51 5G UW

References

  1. ^ "Samsung Galaxy A51 now available with 256GB storage". SoyaCincau.com. 2020-11-06. Retrieved 2020-12-06.
  2. ^ "Samsung Galaxy A51". GSMArena.
  3. ^ "Samsung Announces New Galaxy A71 and Galaxy A51". news.samsung.com. Retrieved 2020-02-24.
  4. ^ "Galaxy A51". Samsung Mobile Press | Samsung Mobile press Official website. Retrieved 2020-02-25.
  5. ^ Sagar (2019-12-12). "Samsung Galaxy A51 and Galaxy A71 announced: Infinity-O displays and L-shaped quad cameras". GSMArena.com. Retrieved 2026-01-27.
  6. ^ McCann, John. "Hands on: Samsung Galaxy A51 review". TechRadar. Retrieved 2020-02-24.
  7. ^ de Looper, Christian (8 April 2020). "Samsung's Galaxy A71 and A51 pack 5G, starting at just $500". Digital Trends. Retrieved 8 April 2020.
  8. ^ "Samsung's most affordable 5G phone, the Galaxy A51, is now available on Verizon". The Verge. 13 August 2020. Retrieved 13 August 2020.
  9. ^ "A Splash of Color and Samsung Premium Care Come to Galaxy A51". Samsung US Newsroom. 2020-06-22. Retrieved 2020-10-27.
  10. ^ a b c "Samsung Galaxy A51 review". GSMArena.com. 2020-01-31. Retrieved 2026-01-28.
  11. ^ a b c "Samsung Galaxy A51 5G review". GSMArena.com. 2020-07-03. Retrieved 2026-01-28.
  12. ^ a b Allison, Michael (2020-08-14). "Samsung Galaxy A51 5G UW is now available from Verizon for $550". Android Central. Retrieved 2026-01-28.
  13. ^ Ismail, Adam (2020-05-07). "Samsung Galaxy A51 review". Tom's Guide. Retrieved 2024-06-12.
  14. ^ Khan, Sana. "Samsung Galaxy A51 - Full Specification, price, review, compare". Gizmochina. Retrieved 2020-02-24.
  15. ^ "Samsung Raises the Bar for Mobile Experience Innovation Committing to Three Generations of Android OS Upgrades". Samsung Newsroom (Global). 5 December 2020. Retrieved 18 February 2021.
  16. ^ Shaik, Asif Iqbal (2021-02-04). "Samsung starts rolling out Android 11 with One UI 3.0 to Galaxy A51". SamMobile. Retrieved 2026-01-28.
  17. ^ Matei, Mihai (2021-03-29). "Samsung is now rolling out the One UI 3.1 update for the Galaxy A51". SamMobile. Retrieved 2026-01-28.
  18. ^ Matei, Mihai (2022-03-28). "The Galaxy A51 Android 12 update is here!". SamMobile. Retrieved 2026-01-28.
  19. ^ Matei, Mihai (2022-12-05). "Galaxy A51 is getting Android 13 and One UI 5.0 update in Europe". SamMobile. Retrieved 2026-01-28.
  20. ^ Schoon, Ben (2024-02-07). "Samsung ends software updates for Galaxy A51, Tab S6, and more". 9to5Google. Archived from the original on 2025-07-23. Retrieved 2026-01-28.
  21. ^ Russell, Brandon (2021-02-08). "Samsung brings Android 11 to its Galaxy A51 5G, Galaxy A71 5G, and Galaxy M30s". XDA. Retrieved 2026-01-28.
  22. ^ Matei, Mihai (2021-03-29). "Samsung is now rolling out the One UI 3.1 update for the Galaxy A51". SamMobile. Retrieved 2026-01-28.
  23. ^ Shaik, Asif Iqbal (2022-12-12). "Galaxy A51 5G gets Android 13 (One UI 5.0) update with December 2022 security patch". SamMobile. Retrieved 2026-01-28.
  24. ^ Shaik, Asif Iqbal (2023-03-08). "Galaxy A51 5G gets its last major software update (One UI 5.1)". SamMobile. Retrieved 2026-01-28.
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