Samsung Galaxy M40 (SM-M405FN/DS) vs Xiaomi Poco X3 Pro (J20SI 128GB)

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Side by side comparison between Samsung Galaxy M40 vs Xiaomi Poco X3 Pro phones, differences, pros, cons and full specifications. What's the better?

6/26/2021 10:26 AM, updated: 2/24/2023 3:36 PM

Compare Xiaomi Poco X3 Pro X Samsung Galaxy M40 (SM-M405FN/DS) 05Points

Specifications Compare Models Pictures

6.3"
PLS

1080x2340

32
MP

16mp

6GB
RAM

Octa-core

3500
mAh

(Non removable)

15Points Xiaomi Poco X3 Pro (J20SI 128GB) Compare Samsung Galaxy M40 X

Specifications Compare Models Pictures

6.67"
IPS

1080x2400

48
MP

20mp

6GB
RAM

Octa-core

5160
mAh

(Non removable)

What's the better phone? Xiaomi Poco X3 Pro (J20SI 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!

5 Advantages Samsung Galaxy M40 (SM-M405FN/DS)	vs	15 Advantages Xiaomi Poco X3 Pro (J20SI 128GB)
+168 grams (5.88 ounces)28% Lighter	vs	215 grams (7.53 ounces)
+7.9 millimeters (0.31 inches)19% Thinner	vs	9.4 millimeters (0.37 inches)
+409 PPI4% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	395 PPI
+f/1.7 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/1.8 (aperture)
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
2GHz 64bit Octa-core	vs	+2.96GHz 64bit Octa-core (7nm)38% More powerful processor, you can open your applications faster
eMMC 5.1	vs	+UFS 3.1Advantage Fastest write and read storage.
TFT PLS	vs	+TFT IPS LCDAdvantage TFT IPS LCD display is brighter and more vivid
1080x2340 pixels	vs	+1080x2400 pixels3% Higher resolution screen
6.3"	vs	+6.67"6% Larger screen
(triple camera) 32MP + 8MP + 5MP	vs	+(quad camera) 48MP + 8MP + 2MP + 2MP33% Higher resolution main camera
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
(front) 16MP	vs	+(front) 20MP25% Higher resolution secondary camera to take pictures and selfies
Android 10	vs	+Android 13Advantage Android 13 is newer and safer
(4G LTE-A) 400 Mbps	vs	+(4G LTE-A) 800 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+Ambient light sensorAdvantage Sensors help you use the device
3500 mAh	vs	+5160 mAh47% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
15W	vs	+33W120% 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 reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+IP53 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

29 Common items in both devices

6GB LPDDR4X

128GB (105GB available) / 128GB (106GB available)

Until 1TB microSD, microSDXC

Plastic body, glass front

16 million

Only digital zoom

PDAF: phase detection autofocus

+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
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Change model		Choose the model
Model	Galaxy M40 (SM-M405FN/DS)	Poco X3 Pro (J20SI 128GB)
Other model names	Galaxy M40 SM-M405FN/Dual-Sim (128GB + 6GB RAM)	POCO X3 Pro M2102J20SI (128GB+6GB RAM)
Country or region available	(Europe), (Global, International)	India
Brand	Samsung	Xiaomi
Release date	6/11/2019	3/24/2021, Announced: 3/22/2021
Depth	7.9 millimeters (0.31 inches)	9.4 millimeters (0.37 inches)
Size (width x height)	73.9 x 155.3 millimeters (2.91 x 6.11 in)	76.8 x 165.3 millimeters (3.02 x 6.51 in)
Weight	168 grams (5.88 ounces)	215 grams (7.53 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	IP53 certified: protection against dust and splashing
📲 Display
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Display type	TFT PLS	TFT IPS LCD
Screen size	6.3" inches	6.67" inches
Screen-to-body ratio	~84.9% (screen-to-body ratio)	~84.6% (screen-to-body ratio)
Display resolution	1080x2340 pixels	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	409 PPI	395 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 3	Gorilla Glass 6
Refresh rate	feature not registered	120Hz
Display features	feature not registered	450nits[typ] HDR10
🤖 Operating System
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
System version	Android 9.0 Pie	Android 11
Firmware update	Android 10	Android 13
User Interface	feature not registered	MIUI 12.5 / 13 / 14
⚙️ Processor
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Chipset	64bit: Qualcomm Snapdragon 675 SDM675 (11nm)	64bit: Qualcomm Snapdragon 860 (SM8150-AC) (7nm)
CPU	Octa-core, 2 processors: 2x 2GHz Kryo 460 Gold (Dual-core) 6x 1.7GHz Kryo 460 Silver (Hexa-core)	Octa-core, 3 processors: 1x 2.96GHz Kryo 485 Gold (Single-core) 3x 2.42GHz Kryo 485 Gold (Triple-core) 4x 1.78GHz Kryo 485 Silver (Quad-core)
GPU graphical controller	Qualcomm Adreno 612 845Mhz	Qualcomm Adreno 640 (250-672MHz)
Performance (benchmark)	feature not registered	AnTuTu: 483527 (v8) Geekbench: 2574 (v5.1) GFXBench: 38fps (ES 3.1 onscreen)
💽 Memory and storage
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
RAM memory	6GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (105GB available) eMMC 5.1	128GB (106GB available) UFS 3.1
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	400/50 Mbps	800/150 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	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat6 (Bands 1, 3, 5, 8, 20) TD-LTE (Bands 40, 41)	LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, 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	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41)
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Back camera (main camera)	(triple camera) 32 megapixels 8MP ultrawide f/2.212mm1.12µmPDAF 5MP depth f/2.2	(quad camera) 48 megapixels 8MP ultrawide f/2.2119°1.0µm 2MP macro f/2.4 2MP depth f/2.4
Main camera resolution	6528x4896 pixels	8000x6000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/1.7 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	1/2" inches
Pixel size	0.8µm 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	1080p@960fps
📸 Front camera
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Front camera (secondary)	16 megapixels	20 megapixels
Front camera resolution	4608x3456 pixels	5184x3840 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.2 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	1/3.4" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Loudspeaker	Supported	Stereo sound with dual speakers
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	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
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
USB	USB 2.0 Type-C reversible connector	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	Type-C reversible connector	3.5mm jack
TV output	Not supported	USB Type-C (reversible)
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, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Supported
🧭 Sensors
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Sensors	Accelerometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3500 mAh	5160 mAh
Charger, watts	15W Wired fast charging	33W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	29 hours (1.2 days)	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
Call control	Voice dialing, Voice recorder	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	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: Midnight Blue, Sweater Blue • One UI • Dolby Atmos sound • Slow motion 240fps	• Colors: Phantom Black, Frost Blue, Metal Bronze • Silicone Case included • Cooling up to 6 °C • LiquidCool 1.0 Plus
☢️ Radiation rate
	Galaxy M40 (SM-M405FN/DS)	Xiaomi Poco X3 Pro (J20SI 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.99W/kg (head), 0.67W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	0.274W/kg (head), 1.17W/kg (body)	0.57W/kg (head), 0.9W/kg (body)