Xiaomi Mi 9 (128GB/6GB) vs Samsung Galaxy Watch (42mm SM-R815N)

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Side by side comparison between Xiaomi Mi 9 vs Samsung Galaxy Watch devices, differences, pros, cons and full specifications. What's the better?

3/8/2019 8:08 PM, updated: 12/13/2020 9:53 AM

Compare Samsung Galaxy Watch X Xiaomi Mi 9 (128GB/6GB) 25Points

Specifications Compare Models Pictures

6.39"
AMOLED

1080x2340

48
MP

20mp

6GB
RAM

Octa-core

3300
mAh

(Non removable)

07Points Samsung Galaxy Watch (42mm SM-R815N) Compare Xiaomi Mi 9 X

Specifications Compare Models Pictures

1.2"
AMOLED

360x360

N/A

1.5GB
RAM

Dual-core

270
mAh

(Non removable)

What's the better device? Xiaomi Mi 9 (128GB/6GB)

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!

25 Advantages Xiaomi Mi 9 (128GB/6GB)	vs	7 Advantages Samsung Galaxy Watch (42mm SM-R815N)
+2.84GHz 64bit Octa-core (7nm)3 times More powerful processor, you can open your applications faster	vs	1.15GHz 64bit Dual-core
+6GB LPDDR4X3 times More RAM memory. Typically more responsive and better for multitasking.	vs	1.5GB LPDDR3
+128GB (109GB available)72 times More internal storage for applications and files	vs	4GB (1.5GB available)
+UFS 2.1Advantage Fastest write and read storage.	vs	eMMC
+7.61 millimeters (0.3 inches)67% Thinner	vs	12.7 millimeters (0.5 inches)
+1080x2340 pixels19 times Higher resolution screen	vs	360x360 pixels
+6.39"4 times Larger screen	vs	1.2"
+(triple camera) 48MP + 16MP + 12MPAdvantage With a camera you can take pictures anywhere	vs	Not supported
+4K UHD (3840x2160)Advantage More image quality for recording videos with the primary camera	vs	Not supported
+3500000 apps (Google Play Store)2332 times More apps available to download and use	vs	1500 apps
+(4G LTE-A) 1024 Mbps101 times Faster for surfing the internet and download files	vs	(4G LTE) 10 Mbps
+CompassAdvantage Sensors help you use the device	vs	Not supported
+Face unlockAdvantage Sensors help you use the device	vs	Not supported
+Fingerprint sensor (under display)Advantage Sensors help you use the device	vs	Not supported
+Proximity sensorAdvantage Sensors help you use the device	vs	Not supported
+3300 mAh11 times Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	270 mAh
+27W7 times 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.	vs	3.5W
+2 slots (Dual-SIM)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM)
+Type-C jack with 3.5mm jack adapterAdvantage Best output for headset	vs	Not supported
+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster	vs	802.11 b/g/n [wifi4]
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster	vs	4.2 + A2DP
+USB 2.0 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.	vs	Not supported
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	Not supported
+HTML, XHTML, HTML5Advantage Better sites viewing on the internet	vs	Not supported
173 grams (6.06 ounces)	vs	+49 grams (1.72 ounces)3 times Lighter
Aluminum frame, glass front/back	vs	+Stainless steel body, glass frontAdvantage More resistant material
403 PPI	vs	+424 PPI5% Crisper display of text, images and videos because it has more pixels per inch (ppi)
Not supported	vs	+BarometerAdvantage Sensors help you use the device
Not supported	vs	+Heart rateAdvantage Sensors help you use the device
Not supported	vs	+PedometerAdvantage Sensors help you use the device
Not supported	vs	+5 ATM, MIL-STD-810G military certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

13 Common items in both devices

Super AMOLED

16 million

4G LTE-A / 4G LTE

Capacitive

Multitouch

Accelerometer

Ambient light sensor

+6 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 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Change model		Choose the model
Model	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Other model names	小米9, Xiaomi Mi9 (6GB RAM), M1902F1A, M1902F1G, M1902F1T	갤럭시 워치 42mm (4G LTE) SM-R815NZKASKC, Samsung Galileo
Country or region available	China, (Global, International)	South Korea
Brand	Xiaomi	Samsung
Release date	3/1/2019	8/1/2018
Depth	7.61 millimeters (0.3 inches)	12.7 millimeters (0.5 inches)
Size (width x height)	74.67 x 157.5 millimeters (2.94 x 6.2 in)	41.9 x 45.7 millimeters (1.65 x 1.8 in)
Weight	173 grams (6.06 ounces)	49 grams (1.72 ounces)
Build, materials	Aluminum frame, glass front/back	Stainless steel body, glass front
Protection against water and others	Not supported	5 ATM: 50 meters waterproof. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
📲 Display
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Display type	Super AMOLED	Super AMOLED
Screen size	6.39" inches	1.2" inches
Screen-to-body ratio	~85.2% (screen-to-body ratio)	~24.3% (screen-to-body ratio)
Display resolution	1080x2340 pixels	360x360 pixels (1:1)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	403 PPI	424 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 6	Gorilla Glass DX+
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	Not supported
🤖 Operating System
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
System version	Android 9.0 Pie	Tizen 4.0
Firmware update	Android 10	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Chipset	64bit: Qualcomm Snapdragon 855 (SM8150) (7nm)	64bit: Samsung Exynos 9 Dual 9110 (10nm)
CPU	Octa-core, 3 processors: 1x 2.84GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.78GHz Kryo 485 (Quad-core)	Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core)
GPU graphical controller	Qualcomm Adreno 640 (585MHz)	ARM Mali-T720 MP1
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
RAM memory	6GB LPDDR4X	1.5GB LPDDR3
Internal storage	128GB (109GB available) UFS 2.1	4GB (1.5GB available) eMMC
External storage	Not supported	Not supported
📶 Mobile networks
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) e-SIM (Eletronic)
Maximum Download / Upload	1024/150 Mbps	10 Mbps
Network technology	2G, 3G, 4G	3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Not supported
Primary 2G network	CDMA 800, GSM 850/900/1800/1900	Not supported
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100	UMTS 850/1900/2100
Primary 4G network	LTE Cat16/13 VoLTE Global version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 20, 28) TD-LTE (Bands 38, 39, 40) China version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17) TD-LTE (Bands 34, 38, 39, 40, 41)	LTE (Bands 1,3,5,7,8)
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	UMTS, HSDPA, HSUPA, HSPA+, LTE
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	Not supported
📷 Camera
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Back camera (main camera)	(triple camera) 48 megapixels 16MP ultrawide f/2.213mm1/3.0"1.0µmPDAF 12MP telephoto f/2.254mm1/3.6"1.0µmPDAF2x-optical-zoom	Not supported
Main camera resolution	8000x6000 pixels	Not supported
Video recording (primary)	4K UHD (3840x2160) 60 fps	Not supported
Flash	Dual-LED flash	Not supported
Focal aperture	f/1.8 (aperture)	feature not registered
Focal length	feature not registered	feature not registered
Sensor size	1/2" inches	feature not registered
Pixel size	0.8µm pixel	feature not registered
Autofocus	LDAF/PDAF: laser/phase detection autofocus	Not supported
Touch focus	Supported	Not supported
Image stabilization	EIS: Digital stabilization	Not supported
Zoom	Digital and optical zoom	Not supported
Face/smile detection	Face detection, Smile detection	Not supported
BSI sensor	Not supported	Not supported
HDR	HDR photo on both cameras	Not supported
Camera extras	feature not registered	feature not registered
📸 Front camera
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Front camera (secondary)	20 megapixels	Not supported
Front camera resolution	5184x3840 pixels	Not supported
Video recording (secondary)	Full HD (1920x1080)	Not supported
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	feature not registered
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	0.9µm pixel	feature not registered
🔉 Sound and multimedia
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	Not supported
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, OGG, eAAC+
🔌 Connectivity
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
USB	USB 2.0 Type-C, USB OTG On-The-Go	Not supported
Audio output	Type-C jack with 3.5mm jack adapter	Not supported
TV output	Not supported	Not supported
Bluetooth	5.0 + A2DP/LE	4.2 + A2DP
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 b/g/n [wifi4] (2.4GHz)
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS	A-GPS, GeoTagging, GLONASS
NFC	Supported	Supported
Infrared port	Supported	Not supported
🧭 Sensors
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer
Vibrating alert	Supported	Supported
🔋 Battery
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3300 mAh	270 mAh
Charger, watts	27W Wired fast charging	3.5W (5V/0.7A) Wired charging
Inductive / wireless charging	Qi wireless charging	Qi wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	72 hours (3 days)
➕ Other features
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Not supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	Not supported
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Piano Black, Lavender Violet, Ocean Blue • MIUI 10 • HDR10/DCI-P3 display • Sapphire glass camera cover • Quick Charge 4+ • Fast wireless charging 20W	• Colors: Midnight Black, Rose Gold • Straps: Black, Grey, Red, Yellow, Purple, Pink, Brown • Compatible with standard 20mm straps • Always-on display • Rotating bezel • Samsung Pay • Compatible with KT, LG U+, SKT carriers in Korea
☢️ Radiation rate
	Xiaomi Mi 9 (128GB/6GB)	Galaxy Watch (42mm SM-R815N)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.641W/kg (head), 1.67W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered