Xiaomi Mi 8 Youth (128GB/6GB) vs Samsung Galaxy A51 (SM-A515F/DSN)

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Side by side comparison between Xiaomi Mi 8 Youth vs Samsung Galaxy A51 phones, differences, pros, cons and full specifications. What's the better?

1/4/2020 2:03 PM, updated: 11/21/2022 8:39 AM

Compare Samsung Galaxy A51 X Xiaomi Mi 8 Youth (128GB/6GB) 06Points

Specifications Compare Models Pictures

6.26"
IPS

1080x2280

12
MP

24mp

6GB
RAM

Octa-core

3350
mAh

(Non removable)

19Points Samsung Galaxy A51 (SM-A515F/DSN) Compare Xiaomi Mi 8 Youth X

Specifications Compare Models Pictures

6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A51 (SM-A515F/DSN)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

6 Advantages Xiaomi Mi 8 Youth (128GB/6GB)	vs	19 Advantages Samsung Galaxy A51 (SM-A515F/DSN)
+2.2GHz 64bit Octa-core2% More powerful processor, you can open your applications faster	vs	2.3GHz 64bit Octa-core (10nm)
+169 grams (5.92 ounces)2% Lighter	vs	172 grams (6.02 ounces)
+7.5 millimeters (0.3 inches)5% Thinner	vs	7.9 millimeters (0.31 inches)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+f/1.9 (aperture)5% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.0 (aperture)
+Proximity sensorAdvantage Sensors help you use the device	vs	Virtual proximity sensor
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
1080x2280 pixels	vs	+1080x2400 pixels5% Higher resolution screen
403 PPI	vs	+405 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.26"	vs	+6.5"4% Larger screen
(dual camera) 12MP + 5MP	vs	+(quad camera) 48MP + 12MP + 5MP + 5MP3 times Higher resolution main camera
1/2.55" inches	vs	+1/2" inches28% The larger sensor camera lets you take photos with better depth.
(front) 24MP	vs	+(front) 32MP34% Higher resolution secondary camera to take pictures and selfies
(front) Full HD (1920x1080)	vs	+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera
Android 9.0 Pie	vs	+Android 13Advantage Android 13 is newer and safer
(4G LTE-A) 300 Mbps	vs	+(4G LTE-A) 600 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+ANT+Advantage Sensors help you use the device
Not supported	vs	+Face unlockAdvantage Sensors help you use the device
3350 mAh	vs	+4000 mAh19% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
10W	vs	+15W50% More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
Type-C jack with 3.5mm jack adapter	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+FM (RDS)Advantage The radio lets you listen to your songs and sports in general
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
Not supported	vs	+Gorilla Glass 3Advantage Protection against scratches on the screen lets you carry your phone with your keys

25 Common items in both devices

6GB LPDDR4X

128GB (110GB available) / 128GB (107GB available)

eMMC 5.1

16 million

LED flash

Only digital zoom

PDAF: phase detection autofocus

+18 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Change model		Choose the model
Model	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Other model names	小米8 青春版 M1808D2TT, Xiaomi Mi8, Xiaomi Mi 8X, Xiaomi Platina	Samsung Galaxy A51 SM-A515F/DSN
Country or region available	China	(Europe), (Global, International), United Arab Emirates, Pakistan, Taiwan
Brand	Xiaomi	Samsung
Release date	9/1/2018	12/16/2019, Announced: 12/12/2019
Depth	7.5 millimeters (0.3 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	75.8 x 156.4 millimeters (2.98 x 6.16 in)	73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight	169 grams (5.92 ounces)	172 grams (6.02 ounces)
Build, materials	Aluminum frame, glass front/back	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Display type	TFT IPS LCD	Super AMOLED
Screen size	6.26" inches	6.5" inches
Screen-to-body ratio	~82.5% (screen-to-body ratio)	~87.4% (screen-to-body ratio)
Display resolution	1080x2280 pixels	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	403 PPI	405 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 3
Refresh rate	feature not registered	60Hz
Display features	feature not registered	Always-On Display
🤖 Operating System
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
System version	Android 8.1 Oreo	Android 10
Firmware update	Android 9.0 Pie	Android 13
User Interface	feature not registered	One UI 2.5 / 3.1 / 4.1 / 5.0
⚙️ Processor
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Chipset	64bit: Qualcomm Snapdragon 660 SDM660 (14nm)	64bit: Samsung Exynos 9611 (10nm)
CPU	Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core)	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	Qualcomm Adreno 512 650Mhz	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
RAM memory	6GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (110GB available) eMMC 5.1	128GB (107GB available) eMMC 5.1
External storage	Not supported	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	300/50 Mbps	600/150 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	CDMA 800, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat6 (Bands 1,3,5,7,8) TD-LTE (Bands 34,38,39,40,41) VoLTE	LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Back camera (main camera)	(dual camera) 12 megapixels 5MP depth f/2.01.12µm	(quad camera) 48 megapixels 12MP ultrawide f/2.213mm1.12µm 5MP telephoto f/2.440mm 5MP depth f/2.21/5.0"1.12µm
Main camera resolution	4000x3000 pixels	8000x6000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.9 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	1/2.55" inches	1/2" inches
Pixel size	1.4µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Front camera (secondary)	24 megapixels	32 megapixels
Front camera resolution	5632x4224 pixels	6528x4896 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	feature not registered	f/2.2 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	1/2.8" inches
Pixel size	1.8µm pixel	0.8µm pixel
🔉 Sound and multimedia
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	Not supported	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD, WMV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	Type-C jack with 3.5mm jack adapter	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor ANT+ Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Virtual proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3350 mAh	4000 mAh
Charger, watts	10W (5V/2A) Wired charging	15W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Twilight gold, Dream blue, Deep space gray • MIUI • 19:9 screen • Quick Charge 3.0	• Colors: Prism, Crush Black, White, Blue, Pink
☢️ Radiation rate
	Xiaomi Mi 8 Youth (128GB/6GB)	Galaxy A51 (SM-A515F/DSN)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.369W/kg (head), 1.59W/kg (body)