Xiaomi Mi 9 SE (128GB) vs Samsung Galaxy A51 (TV SM-A515F/DST)

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Side by side comparison between Xiaomi Mi 9 SE vs Samsung Galaxy A51 phones, differences, pros, cons and full specifications. What's the better?

1/4/2020 5:34 PM, updated: 1/25/2023 4:06 AM

Compare Samsung Galaxy A51 X Xiaomi Mi 9 SE (128GB) 13Points

Specifications Compare Models Pictures

5.97"
AMOLED

1080x2340

48
MP

20mp

6GB
RAM

Octa-core

3070
mAh

(Non removable)

12Points Samsung Galaxy A51 (TV SM-A515F/DST) Compare Xiaomi Mi 9 SE X

Specifications Compare Models Pictures

6.5"
AMOLED

1080x2400

48
MP

32mp

4GB
RAM

Octa-core

4000
mAh

(Non removable)

What's the better phone? Xiaomi Mi 9 SE (128GB)

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!

13 Advantages Xiaomi Mi 9 SE (128GB)	vs	12 Advantages Samsung Galaxy A51 (TV SM-A515F/DST)
+2.3GHz 64bit Octa-core (10nm)12% More powerful processor, you can open your applications faster	vs	2.3GHz 64bit Octa-core (10nm)
+6GB LPDDR4X50% More RAM memory. Typically more responsive and better for multitasking.	vs	4GB LPDDR4X
+UFS 2.0Advantage Fastest write and read storage.	vs	eMMC 5.1
+155 grams (5.43 ounces)11% Lighter	vs	172 grams (6.02 ounces)
+7.45 millimeters (0.29 inches)6% Thinner	vs	7.9 millimeters (0.31 inches)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+HDR8Advantage The HDR8 display provides vibrant colors and more details	vs	Not supported
+432 PPI7% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	405 PPI
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.0 (aperture)
+(4G LTE-A) 800 Mbps33% Faster for surfing the internet and download files	vs	(4G LTE-A) 600 Mbps
+18W20% 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	15W
+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
1080x2340 pixels	vs	+1080x2400 pixels3% Higher resolution screen
5.97"	vs	+6.5"9% Larger screen
(triple camera) 48MP + 13MP + 8MP	vs	+(quad camera) 48MP + 12MP + 5MP + 5MP1% Higher resolution main camera
(front) 20MP	vs	+(front) 32MP61% 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 11	vs	+Android 13Advantage Android 13 is newer and safer
Not supported	vs	+ANT+Advantage Sensors help you use the device
3070 mAh	vs	+4000 mAh30% 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	+FM (RDS)Advantage The radio lets you listen to your songs and sports in general
Not supported	vs	+Digital TVAdvantage Watch your favorite TV shows anywhere

29 Common items in both devices

128GB (109GB available) / 128GB (107GB available)

Super AMOLED

60Hz

16 million

Only digital zoom

LDAF/PDAF: laser/phase detection autofocus / PDAF: phase detection autofocus

EIS: Digital stabilization

+22 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 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Change model		Choose the model
Model	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Other model names	小米9 SE M1903F2G, M1903F2A, Xiaomi Grus	Galaxy A51 TV SM-A515F/DST
Country or region available	(Global, International), China	Brazil
Brand	Xiaomi	Samsung
Release date	3/1/2019, Announced: 2/20/2019	12/16/2019, Announced: 12/12/2019
Depth	7.45 millimeters (0.29 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	70.5 x 147.5 millimeters (2.78 x 5.81 in)	73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight	155 grams (5.43 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 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Display type	Super AMOLED	Super AMOLED
Screen size	5.97" inches	6.5" inches
Screen-to-body ratio	~84.1% (screen-to-body ratio)	~87.4% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	432 PPI	405 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass 3
Refresh rate	60Hz	60Hz
Display features	HDR8	Always-On Display
🤖 Operating System
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
System version	Android 9.0 Pie	Android 10
Firmware update	Android 11	Android 13
User Interface	MIUI 10 / 11 / 12.5	One UI 2.5 / 3.1 / 4.1 / 5.0
⚙️ Processor
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Chipset	64bit: Qualcomm Snapdragon 712 (SDM712) (10nm)	64bit: Samsung Exynos 9611 (10nm)
CPU	Octa-core, 2 processors: 2x 2.3GHz Kryo 360 Gold (Dual-core) 6x 1.7GHz Kryo 360 Silver (Hexa-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 616 (610MHz)	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	AnTuTu: 180057 (v7) Geekbench: 6017 (v4.4) GFXBench: 14fps (ES 3.1 onscreen)	AnTuTu: 113051 (v7), 175363 (v8) Geekbench: 5401 (v4.4), 1294 (v5.1) GFXBench: 5.6fps (ES 3.1 onscreen)
💽 Memory and storage
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
RAM memory	6GB LPDDR4X	4GB LPDDR4X
Internal storage	128GB (109GB available) UFS 2.0	128GB (107GB available) eMMC 5.1
External storage	Not supported	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
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	800/150 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 Cat15 (1, 3, 5, 7, 8) TD-LTE (34, 38, 39, 40, 41) VoLTE	LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) 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+, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	UMTS 850/900/1900/2100	Not supported
Secondary 4G network	LTE Cat15 (1, 3, 5, 7, 8) TD-LTE (34, 38, 39, 40, 41) VoLTE	Not supported
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE
📷 Camera
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Back camera (main camera)	(triple camera) 48 megapixels 13MP ultrawide f/2.41.12µm 8MP telephoto f/2.41.12µmPDAF	(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	8000x6000 pixels	8000x6000 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/2.0 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	1/2" inches	1/2" inches
Pixel size	0.8µm pixel	0.8µm pixel
Autofocus	LDAF/PDAF: laser/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 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Front camera (secondary)	20 megapixels	32 megapixels
Front camera resolution	5184x3840 pixels	6528x4896 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.2 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	1/2.8" inches
Pixel size	0.9µm pixel	0.8µm pixel
🔉 Sound and multimedia
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Loudspeaker	Mono sound (not stereo)	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	Not supported	FM (RDS)
TV	Not supported	Digital TV
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 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
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	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Supported	Not supported
🧭 Sensors
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Virtual 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 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3070 mAh	4000 mAh
Charger, watts	18W Wired fast charging	15W 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 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
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: Gray, Violet, Blue	• Colors: Prism, Crush Black, White, Blue, Pink
☢️ Radiation rate
	Xiaomi Mi 9 SE (128GB)	Galaxy A51 (TV SM-A515F/DST)
SAR 1.6W/kg (USA, Mexico, etc.)	1.39W/kg (head), 1.39W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	1.19W/kg (head), 1.17W/kg (body)	0.369W/kg (head), 1.59W/kg (body)