Xiaomi Mi 8 (256GB) vs Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)

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Side by side comparison between Xiaomi Mi 8 vs Samsung Galaxy A9 (2018) phones, differences, pros, cons and full specifications. What's the better?

10/28/2018 9:26 PM, updated: 5/7/2021 5:13 PM

Compare Samsung Galaxy A9 (2018) X Xiaomi Mi 8 (256GB) 15Points

Specifications Compare Models Pictures

6.21"
AMOLED

1080x2248

12
MP

20mp

6GB
RAM

Octa-core

3400
mAh

(Non removable)

09Points Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/6GB) Compare Xiaomi Mi 8 X

Specifications Compare Models Pictures

6.3"
AMOLED

1080x2220

24
MP

24mp

6GB
RAM

Octa-core

3800
mAh

(Non removable)

What's the better phone? Xiaomi Mi 8 (256GB)

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!

15 Advantages Xiaomi Mi 8 (256GB)	vs	9 Advantages Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
+2.8GHz 64bit Octa-core27% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core
+256GB (243GB available)121% More internal storage for applications and files	vs	128GB (110GB available)
+UFS 2.1Advantage Fastest write and read storage.	vs	eMMC 5.1
+175 grams (6.13 ounces)5% Lighter	vs	183 grams (6.41 ounces)
+7.6 millimeters (0.3 inches)3% Thinner	vs	7.8 millimeters (0.31 inches)
+HDR10Advantage The HDR10 display provides vibrant colors and more details	vs	Not supported
+1080x2248 pixels1% Higher resolution screen	vs	1080x2220 pixels
+402 PPI3% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	392 PPI
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+OIS (4-axis): Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+1/2.55" inches10% The larger sensor camera lets you take photos with better depth.	vs	1/2.8" inches
+(4G LTE-A) 1024 Mbps128% Faster for surfing the internet and download files	vs	(4G LTE-A) 450 Mbps
+BarometerAdvantage Sensors help you use the device	vs	Not supported
+Face unlockAdvantage Sensors help you use the device	vs	Not supported
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
6.21"	vs	+6.3"1% Larger screen
(dual camera) 12MP + 12MP	vs	+(quad camera) 24MP + 10MP + 8MP + 5MP96% Higher resolution main camera
f/1.8 (aperture)	vs	+f/1.7 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 20MP	vs	+(front) 24MP20% Higher resolution secondary camera to take pictures and selfies
Not supported	vs	+ANT+Advantage Sensors help you use the device
3400 mAh	vs	+3800 mAh12% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
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	+FMAdvantage The radio lets you listen to your songs and sports in general

30 Common items in both devices

6GB LPDDR4X

Aluminum frame, glass front/back / Aluminum body, glass front

Super AMOLED

60Hz

16 million

Digital and optical zoom

PDAF: phase detection autofocus

+23 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 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Change model		Choose the model
Model	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Other model names	小米8, Xiaomi Mi8 6GB RAM, Xiaomi Dipper	Galaxy A9 SM-A920F/Dual-Sim (6GB RAM), SM-A920FZBJZTO
Country or region available	(Global, International), China, Hong Kong	(Europe), Brazil, India, Malaysia
Brand	Xiaomi	Samsung
Release date	6/1/2018	10/11/2018
Depth	7.6 millimeters (0.3 inches)	7.8 millimeters (0.31 inches)
Size (width x height)	74.8 x 154.9 millimeters (2.94 x 6.1 in)	77 x 162.5 millimeters (3.03 x 6.4 in)
Weight	175 grams (6.13 ounces)	183 grams (6.41 ounces)
Build, materials	Aluminum frame, glass front/back	Aluminum body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Display type	Super AMOLED	Super AMOLED
Screen size	6.21" inches	6.3" inches
Screen-to-body ratio	~83.8% (screen-to-body ratio)	~80.5% (screen-to-body ratio)
Display resolution	1080x2248 pixels	1080x2220 pixels (18.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	402 PPI	392 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass 5
Refresh rate	60Hz	60Hz
Display features	600nits[typ] HDR10	Not supported
🤖 Operating System
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
System version	Android 8.1 Oreo	Android 8.0 Oreo
Firmware update	Android 9.0 Pie	Android 9.0 Pie
User Interface	feature not registered	feature not registered
⚙️ Processor
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Chipset	64bit: Qualcomm Snapdragon 845 MSM8998 (10nm)	64bit: Qualcomm Snapdragon 660 SDM660 (14nm)
CPU	Octa-core, 2 processors: 4x 2.8GHz Kryo 385 Gold (Quad-core) 4x 1.8GHz Kryo 385 Silver (Quad-core)	Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core)
GPU graphical controller	Qualcomm Adreno 630 710Mhz	Qualcomm Adreno 512 650Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
RAM memory	6GB LPDDR4X	6GB LPDDR4X
Internal storage	256GB (243GB available) UFS 2.1	128GB (110GB available) eMMC 5.1
External storage	Not supported	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
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	1024/150 Mbps	450/50 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 850/900/1700/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat16 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20) TD-LTE (34, 38, 39, 40, 41) VoLTE	LTE Cat9 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40)
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 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Back camera (main camera)	(dual camera) 12 megapixels 12MP telephoto f/2.456mm1/3.4"1.0µmAF2x-optical-zoom	(quad camera) 24 megapixels 10MP telephoto f/2.452mm1/3.9"1.0µmAF2x-optical-zoom 8MP ultrawide f/2.412mm1/4.0"1.12µm 5MP depth f/2.2
Main camera resolution	4000x3000 pixels	5656x4240 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.7 (aperture)
Focal length	feature not registered	27mm lens
Sensor size	1/2.55" inches	1/2.8" inches
Pixel size	1.4µm pixel	0.9µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS (4-axis): Optical stabilization	EIS: Digital stabilization
Zoom	Digital and optical zoom	Digital and optical 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 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Front camera (secondary)	20 megapixels	24 megapixels
Front camera resolution	5184x3840 pixels	5656x4240 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	27mm lens
Sensor size	1/3" inches	1/2.8" inches
Pixel size	1.8µm pixel	0.9µm pixel
🔉 Sound and multimedia
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	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 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
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	USB Type-C (reversible)	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	Supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Sensors	Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor ANT+ Compass Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3400 mAh	3800 mAh
Charger, watts	18W Wired fast charging Quick Charge 4+	18W Wired fast charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Call control	Voice dialing, Voice recorder, Voice commands	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: Black, Blue, White, Gold • MIUI 9.5 • Always-On Display • WiFi display	• Colors: Caviar Black, Lemonade Blue, Bubblegum Pink • Samsung Pay • Dolby Atmos
☢️ Radiation rate
	Xiaomi Mi 8 (256GB)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.27W/kg (head), 0.84W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered