Samsung Galaxy S21 Ultra vs vivo X51 5G

Phone Name	Samsung Galaxy S21 Ultra vivo X51 5G
Phone image
Price
Our Rating	9.0 8.0
Brand	Samsung vivo
Category	Mobiles Mobiles

Network


Network Technologies	GSM / CDMA / HSPA / EVDO / LTE / 5G GSM / CDMA / HSPA / LTE / 5G
Network Technology 3G	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Network Technology 4G	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66
Network Technology 5G	SA/NSA/Sub6/mmWave 1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA
Speed	HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G HSPA 42.2/5.76 Mbps, LTE-A, 5G

Launch Date


Announced	14, January, 2021 21, October, 2020
Market Availability	29, January, 2021 Available. 23, October, 2020

Design


Dimensions Mobile	165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 inch) 158.46 x 72.80 x 8.04 mm (6.23 x 2.86 x 0.31 inch)
Weight	227 gram / 229 gram 181.5 G (6.40 oz)
SIM	Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by) Dual SIM (Nano-SIM, dual standby)
Materials	Front glass (Corning Gorilla Victus), back (Corning Gorilla glass), aluminum frame Glass front, glass back, aluminum frame
Colors	Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown Grey
Other features	- Samsung Pay (Visa, MasterCard Certificate) - IP68 water and dust resistant, for a depth of up to 1.5 meters 30 Minute - support S-Pen

DISPLAY


Type	Dynamic AMOLED 2X AMOLED capacitive Touch screen, 16 Million colors
size	6.8 Inch (~ 89.8% screen-to-body ratio) 6.56 Inch, (~ 90.6% screen-to-body ratio)
Screen Resolution	1440 x 3200 Pixels, ratio 20: 9 (~ 515 Pixels per inch) 1080 x 2376 Pixels (398 pixels per inch)
Screen protection	Corning Gorilla Victus Glass
Other features	- Refresh rate 120 Hz - HDR10+ - Always-on display or the display always works - 1500 nits - HDR10 - Refresh rate 90 Hz

Performance


Operating System	Android 11 One UI 3.1 Android 10 - Use interface Funtouch 10.5
Chipset	Qualcomm Snapdragon 888 - (5nm) / Exynos 2100 Global - (5nm) (depending on the country) Qualcomm SDM765 Snapdragon 765G - FinFET 7 nanometer (nm)
CPU Speed	- Octa-core for the Middle East (1 x 2.9 GHz Cortex-X1 & 3 x 2.8 GHz Cortex-A78 & 4 x 2.2 GHz Cortex-A55) - Octa core model for the United States / China / Korea (1x2.84GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1. 80 Kryo GHz 680) Octa-core, (1 x 2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)
Gpu graphics processor	Mali-G78 MP14 - International / Adreno 660 - United States / China / Korea Adreno 620

Storage


External memory	no no
RAM	12/16 GB 8 GB RAM
Storage	128/256/512 GB, UFS 3.1 256 GB, UFS 2.1

Cameras


Rear camera	Quad camera: - 108 Megapixels, (2nd generation), 26mm (wide), PDAF, laser AF, OIS, lens f/1.8 - 10 Mega-pixel, 240mm (periscope telephoto), dual pixel PDAF, OIS, 10x optical zoom, f/4.9 aperture - 10 Mega-pixel, 70mm (telephoto), dual pixel PDAF, OIS, 3x optical zoom, f/2.4 - 12 Mega pixel, 13mm (ultra wide), dual pixel PDAF, Super Steady video, f/2.2 Quad:- - 48 Megapixels, (wide), PDAF, laser AF, gimbal OIS, f / 1.6 aperture - 8 Megapixel, 135mm (periscope telephoto), PDAF, OIS, 5x optical zoom, f/3.4 - 13 Megapixel, 50mm (portrait), PDAF, 2x optical zoom, f/2.5 - 8 Megapixel, 16mm (very wide), f / 2.2 aperture
Camera Features	LED flash, auto HDR, panorama Flash LED Dual-color, HDR, panorama
Video	- 8K video recording, 24 Fps - 4K video recording @ 30/60 Fps - 1080 Pixel 30/60/240 fps - 720 Pixel 960 fps - Electronic stabilizer gyro-EIS - Stereo sound recording - HDR10+ - 4K 30 fps - 1080 Pixel 30 fps - Electronic stabilizer gyro-EIS
Selfie camera	40 Megapixel, 26mm (wide), PDAF, f/2.2 aperture 32 Megapixel, 26mm (wide), f/2.5
Features	Dual video call, Auto-HDR HDR
	1080 Pixel 30 fps, 4K video recording, 30/60 Fps 1080 Pixel 30 fps

Battery


Battery	Lithium polymer, 5000 MAH, non-removable 4315 mAh, Li-polymer, non-removable
Fast battery charging	- Fast charging 25W Fast battery charging 33W
Other battery features	- Wireless charging 15W - reverse wireless charging 4.5W - USB Power Delivery 3.0 - Fast Qi wireless charging / LDCs Up to 57% in 30 Minute

Sound


Loudspeaker	Yes Yes
3.5mm jack
Other Sound features	- audio 32 Bit / 384 KHz - Tuned by AKG 24-bit/192kHz audio

Connectivity


Wi-Fi Technology	Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth	5.2, A2DP, LE 5.1, A2DP, LE, APTX HD
GPS	Yes, with A-GPS, GLONASS, BDS, GALILEO A-GPS, GLONASS, GALILEO, BDS
NFC	Yes Yes
Infrared	no
Radio	FM Radio (Snapdragon model only; market dependent / Operator) no
Charging port	USB Type-C 3.2, USB On-The-Go USB Type-C 2.0, USB On-The-Go
Sensors	Fingerprint (under display, ultrasonic), acceleration, gyro, proximity, compass, barometer Footprint (under display, optical), acceleration, gyro, proximity, compass, color spectrum
Additional features	- Samsung DeX, Samsung Wireless DeX (desktop experience support) - ANT+ - Bixby natural language commands and dictation

Mobile price


Price in Egypt	22,800 Egyptian Pound 14,522 Egyptian Pound
Price in Saudi Arabia [: Ar] Price in Saudi Arabia Saudi Riyal (SAR) [:]	4,496 SR 3,466 SR
Price in the UAE [: Ar] mobile price in the United Arab Emirates in UAE Dirhams (AED) [:]	4,403 AED 3,394 AED
Mobile price in India	87,653 Indian Rupee 68,068 Indian Rupee
Mobile price in Iraq	1,750,185 Iraqi Dinar 1,102,442 Iraqi Dinar
Mobile price in dollars	1,199 USD, 128GB 12GB RAM 780 Euros equivalent 925 USD
Prices are on	14, January, 2021 20, October, 2020

cell phone


Mobile name	Samsung Galaxy S21 Ultra 5G vivo X51 5G
MODEL	SM-G998B, SM-G998B/DS XE710