Samsung Galaxy S20 Ultra 5G vs Samsung Galaxy A51

SM-G986, SM-G986F

SM-A515F/DS, SM-A515FN/DS (Global)

2020, February

2019, December

2020, March

2019, December

161.9 x 73.7 x 7.8 mm (6.37 x 2.90 x 0.31 in)

158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)

222 g (7.83 oz)

172 g (6.07 oz)

IP68 dust/water resistant (up to 1.5m for 30 mins) Glass front (Gorilla Glass 6), glass back (Gorilla Glass 6), metal frame

Glass front (Gorilla Glass 3), plastic back, plastic frame

Cosmic Grey, Cosmic Black

Prism Crush Black, Prism Crush White, Prism Crush Blue, Prism Crush Pink

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) CDMA 800 / 1900 & TD-SCDMA

Yes

HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO

Yes

LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 32(1500), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100)

Yes

5G band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 28(700), 40(2300), 77(3700), 78(3500); SA/NSA/Sub6

No

Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)

Yes, Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)

Dynamic AMOLED

Super AMOLED

6.9 inches, 114.0 cm2 (~89.9% screen-to-body ratio)

6.5 inches, 102.0 cm2 (~87.4% screen-to-body ratio)

1440 x 3200 pixels

1080 x 2400 pixels

525 ppi density

405 ppi density

2X capacitive touchscreen

Capacitive Touchscreen

Corning Gorilla Glass 6

Corning Gorilla Glass 3

HDR10+ Always-on display 120Hz (up to FHD resolution)

-

No

Yes

108 MP, f/1.8, 26mm (wide), PDAF, OIS

48 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF

Periscope 48 MP, f/3.6, 102mm (telephoto), 1/2", 0.8µm, PDAF, OIS, 10x hybrid optical zoom

12 MP, (telephoto), PDAF, 2x optical zoom

12 MP, f/2.2, 13mm (ultrawide), AF, Super Steady video

5 MP, f/2.4, (macro)

0.3 MP, TOF 3D, (depth)

5 MP, f/2.2, depth sensor

3240p@30fps, 2160p@30/60fps, 1080p@30/60/240fps, HDR10+, dual-video rec., stereo sound rec., gyro-EIS & OIS

1080p@30fps

LED Flash

LED flash

40 MP, f/2.2, 26mm (wide), PDAF

32 MP, f/2.0, 25mm (wide)

2160p@30/60fps, 1080p@30fps

1080p@30fps

-

Panorama, HDR

-

HDR

Android 10.0

Android 10, upgradable to Android 11

One UI 2.0

One UI, Upgradable to One UI 3.1

Exynos 990 (7 nm+) - Global

Exynos 9611 (10nm)

Octa-core (2x2.73 GHz Mongoose M5 & 2x2.60 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) - Global

Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)

Mali-G77 MP11 - Global

Mali-G72 MP3

12 GB

6 GB

(UFS3.0) 128GB, 256GB, 512GB

128 GB

Yes, up to 1 TB via microSD card

Yes, microSD, up to 1 TB (dedicated slot)

Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer

Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, ANT+

5.0, A2DP, LE, aptX

5.0, A2DP, LE

Wi-Fi 802.11 a/b/g/n/ac/ax, dual-band, Wi-Fi Direct

Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct

3.1, Type-C 1.0 reversible connector

2.0, Type-C 1.0 reversible connector, USB On-The-Go

Yes, with A-GPS, GLONASS, BDS, GALILEO

Yes, with A-GPS, GLONASS, GALILEO, BDS

Fast Qi/PMA, 15W

-

HSPA 42.2/5.76 Mbps, LTE-A (7CA) Cat20 2000/150 Mbps; 5G (2+ Gbps DL)

HSPA 42.2/5.76 Mbps, LTE-A

Li-Poly (Lithium Polymer)

Li-Ion (Lithium Ion)

5000 mAh battery

4000 mAh battery

Yes, 45W: 100% in 74 min

Yes, 15W