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Xiaomi Mi A3 (128GB) vs Samsung Galaxy A51 (SM-A515F/DSM 128GB)

Side by side comparison between Xiaomi Mi A3 vs Samsung Galaxy A51 phones, differences, pros, cons with full specifications. What's the better?

,
Xiaomi Mi A3 (128GB)
6.088"
AMOLED

720x1560

48
MP

32mp

4GB
RAM

64bit Octa

4030
mAh

(Non removable)

vs
12PointsSamsung Galaxy A51 (SM-A515F/DSM 128GB)Compare Xiaomi Mi A3 X
Samsung Galaxy A51 (SM-A515F/DSM 128GB)
6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

64bit Octa

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A51 (SM-A515F/DSM 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!

Mi A3 (128GB)5 Advantages Xiaomi Mi A3 (128GB)vsGalaxy A51 (SM-A515F/DSM 128GB)12 Advantages Samsung Galaxy A51 (SM-A515F/DSM 128GB)
+UFS 2.1Advantage
Fastest write and read storage.
vseMMC 5.1
+Aluminum frame, glass front/backAdvantage
More resistant material
vsPlastic body, glass front
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+4030 mAh1%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs4000 mAh
+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.
vs15W
2Ghz 64bit Octa-Corevs+2.3Ghz 64bit Octa-Core10%
More powerful processor, you can open your applications faster
4GB LPDDR4Xvs+6GB LPDDR4X50%
More RAM memory. Typically more responsive and better for multitasking.
174 grams (6.09 ounces)vs+172 grams (6.02 ounces)1%
Lighter
8.5 millimeters (0.33 inches)vs+7.9 millimeters (0.31 inches)8%
Thinner
720x1560 pixelsvs+1080x2400 pixels131%
Higher resolution screen
282 PPIvs+405 PPI44%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.088"vs+6.5"7%
Larger screen
(triple camera) 48MP + 8MP + 2MPvs+(quad camera) 48MP + 12MP + 5MP + 5MP21%
Higher resolution main camera
(front) Full HD (1920x1080)vs+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
(4G+ LTE-A) 450 Mbpsvs+(4G+ LTE-A) 600 Mbps33%
Faster for surfing the internet and download files
Not supportedvs+ANT+Advantage
Sensors help you use the device
2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)
vs+2 slots (Dual-SIM)
(dedicated slot)Advantage
More SIM card slots. You can choose more carriers.

37 Common items in both devices
128GB (109GB available) / 128GB (107GB available)
Until 512GB microSD, microSDXC / Until 1TB microSD, microSDXC
Super AMOLED
60Hz
16 million
LED flash
Only digital zoom
+30 specs and more in the table below

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

Highlight differencesClear highlight
Physical featuresXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
ModelMi A3 (128GB)Galaxy A51 (SM-A515F/DSM 128GB)
Other model namesXiaomi Mi A3 (Android One), M1906F9SH, M1906F9SISamsung Galaxy A51 SM-A515F/DSM
Country or region available(Global, International)
(Global, International)
KazakhstanRussia
Kazakhstan, Russia
BrandXiaomiSamsung
Release dateJuly, 2019December, 2019
Depth8.5 millimeters (0.33 inches)7.9 millimeters (0.31 inches)
Size (width x height)71.85 x 153.48 millimeters (2.83 x 6.04 in)73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight174 grams (6.09 ounces)172 grams (6.02 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsAluminum frame, glass front/backPlastic body, glass front
Protection against water and othersNot supportedNot supported
System (OS)Xiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Operating systemAndroid 9.0 PieAndroid 10
Firmware updateAndroid 10feature not registered
HardwareXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Chipset64bit - Qualcomm Snapdragon 665 SDM665 (11nm)64bit - Samsung Exynos 9 Octa 9611 (10nm)
CPU processorOcta-Core, 2 processors:
2Ghz Quad-Core Kryo 260 Gold
1.8Ghz Quad-Core Kryo 260 Silver
Octa-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerQualcomm Adreno 610ARM Mali-G72 MP3
RAM memory4GB LPDDR4X6GB LPDDR4X
Internal storage128GB (109GB available)
UFS 2.1
128GB (107GB available)
eMMC 5.1
External storageUntil 512GB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
Until 1TB microSD, microSDXC
(dedicated slot)
DisplayXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Display typeSuper AMOLEDSuper AMOLED
Screen size6.088" inches6.5" inches
Screen-to-body ratio~82.5% (screen-to-body ratio)~87.4% (screen-to-body ratio)
Display resolution720x1560 pixels (19.5:9)1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)282 PPI405 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 5Gorilla Glass 3
Display features60Hz60Hz
Mobile networksXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Dual-SIMDual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
Dual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload450/50 Mbps600/150 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat9 (1, 2, 3, 4, 5, 7, 8, 20, 28)
TD-LTE (38, 40)
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 networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder
CameraXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Back camera (main camera)(triple camera)
48 megapixels
8MP ultrawidef/2.21/4.0"1.12µm
2MP depthf/2.4
(quad camera)
48 megapixels
12MP ultrawidef/2.213mm1.12µm
5MP telephotof/2.440mm
5MP depthf/2.21/5.0"1.12µm
Main camera resolution8000x6000 pixels8000x6000 pixels
Video recording (primary)4K UHD (3840x2160) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal lengthfeature not registered26mm lens
Sensor size1/2" inches1/2" inches
Pixel size0.8µm pixel0.8µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedNot supported
HDRHDR photo on both camerasHDR photo on both cameras
2ª cameraXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Front camera (secondary)32 megapixels32 megapixels
Front camera resolution6528x4896 pixels6528x4896 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.2 (aperture)
Focal length26mm lens26mm lens
Sensor size1/2.8" inches1/2.8" inches
Pixel size0.8µm pixel0.8µm pixel
MultimediaXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
RadioFMFM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivityXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNANot supportedNot supported
NFCNot supportedNot supported
GPSA-GPS, GeoTagging, GLONASS, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portSupportedNot supported
Other functionsXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (under display)
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Hall effect
Face unlock
Fingerprint sensor (under display)
ANT+
Other features- Colors: Gray, White, Blue
- Android One
- 2.5D glass screen
- WiFi direct, display, hotspot
- Colors: Prism, Crush Black, White, Blue, Pink
- One UI 2
- Always On Display
- WiFi direct, hotspot
Power supplyXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity4030 mAh4000 mAh
Charger, watts18W (9V/2A) Fast battery charging
Quick Charge 3
15W Fast battery charging
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateXiaomi Mi A3 (128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registered0.369W/kg (head) | 1.59W/kg (body)
X

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