Samsung Galaxy A31 (SM-A315G/DSL) vs Xiaomi Redmi Note 9S (128GB)

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Side by side comparison between Samsung Galaxy A31 vs Xiaomi Redmi Note 9S phones, differences, pros, cons and full specifications. What's the better?

5/11/2020 10:33 PM, updated: 1/19/2023 3:05 AM

Compare Xiaomi Redmi Note 9S X Samsung Galaxy A31 (SM-A315G/DSL) 06Points

Specifications Compare Models Pictures

6.4"
AMOLED

1080x2400

48
MP

20mp

4GB
RAM

Octa-core

5000
mAh

(Non removable)

14Points Xiaomi Redmi Note 9S (128GB) Compare Samsung Galaxy A31 X

Specifications Compare Models Pictures

6.67"
IPS

1080x2400

48
MP

16mp

6GB
RAM

Octa-core

5020
mAh

(Non removable)

What's the better phone? Xiaomi Redmi Note 9S (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!

6 Advantages Samsung Galaxy A31 (SM-A315G/DSL)	vs	14 Advantages Xiaomi Redmi Note 9S (128GB)
+185 grams (6.48 ounces)13% Lighter	vs	209 grams (7.32 ounces)
+8.6 millimeters (0.34 inches)2% Thinner	vs	8.8 millimeters (0.35 inches)
+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid	vs	TFT IPS LCD
+411 PPI4% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	395 PPI
+(quad camera) 48MP + 8MP + 5MP + 5MP5% Higher resolution main camera	vs	(quad camera) 48MP + 8MP + 5MP + 2MP
+(front) 20MP25% Higher resolution secondary camera to take pictures and selfies	vs	(front) 16MP
2GHz 64bit Octa-core (12nm)	vs	+2.3GHz 64bit Octa-core (8nm)28% More powerful processor, you can open your applications faster
4GB LPDDR4X	vs	+6GB LPDDR4X50% More RAM memory. Typically more responsive and better for multitasking.
eMMC 5.1	vs	+UFS 2.1Advantage Fastest write and read storage.
Not supported	vs	+HDR10Advantage The HDR10 display provides vibrant colors and more details
6.4"	vs	+6.67"4% Larger screen
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
Full HD (1920x1080)	vs	+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera
(4G LTE) 150 Mbps	vs	+(4G LTE-A) 800 Mbps4 times Faster for surfing the internet and download files
Virtual proximity sensor	vs	+Proximity sensorAdvantage Sensors help you use the device
5000 mAh	vs	+5020 mAh1% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
15W	vs	+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.
Not supported	vs	+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys
Not supported	vs	+P2i certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

37 Common items in both devices

128GB (104GB available) / 128GB (106GB available)

Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC

Plastic body, glass front / Plastic body, glass front/back

60Hz

16 million

1080x2400 pixels

LED flash

+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 differences

📱 Model features
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Change model		Choose the model
Model	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Other model names	Galaxy A31 SM-A315GZKKZTO (128GB + 4GB RAM)	Xiaomi Note 9S (M2003J6A1G Global version) 6GB RAM
Country or region available	(Latin America), Brazil	(Global, International)
Brand	Samsung	Xiaomi
Release date	4/27/2020, Announced: 3/24/2020	4/30/2020, Announced: 3/23/2020
Depth	8.6 millimeters (0.34 inches)	8.8 millimeters (0.35 inches)
Size (width x height)	73.1 x 159.3 millimeters (2.88 x 6.27 in)	76.68 x 165.75 millimeters (3.02 x 6.53 in)
Weight	185 grams (6.48 ounces)	209 grams (7.32 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front/back
Protection against water and others	Not supported	P2i certified: water repellent nano-coating
📲 Display
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Display type	Super AMOLED	TFT IPS LCD
Screen size	6.4" inches	6.67" inches
Screen-to-body ratio	~84.9% (screen-to-body ratio)	~84.5% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	411 PPI	395 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 5
Refresh rate	60Hz	60Hz
Display features	Not supported	450nits[typ] HDR10
🤖 Operating System
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
System version	Android 10	Android 10
Firmware update	Android 11	Android 11
User Interface	One UI 2.5 / 3.1	MIUI 11 / 12
⚙️ Processor
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Chipset	64bit: MediaTek Helio P65 (MT6768) (12nm)	64bit: Qualcomm Snapdragon 720G (SM7125) (8nm)
CPU	Octa-core, 2 processors: 2x 2GHz ARM Cortex-A75 (Dual-core) 6x 1.7GHz ARM Cortex-A55 (Hexa-core)	Octa-core, 2 processors: 2x 2.3GHz Kryo 465 Gold (Dual-core) 6x 1.8GHz Kryo 465 Silver (Hexa-core)
GPU graphical controller	ARM Mali-G52 MC2 (820MHz)	Qualcomm Adreno 618 (750MHz)
Performance (benchmark)	AnTuTu: 151815 (v8) Geekbench: 5096 (v4.4), 1216 (v5.1) GFXBench: 7fps (ES 3.1 onscreen)	AnTuTu: 279625 (v8) Geekbench: 1785 (v5.1) GFXBench: 15fps (ES 3.1 onscreen)
💽 Memory and storage
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
RAM memory	4GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (104GB available) eMMC 5.1	128GB (106GB available) UFS 2.1
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 512GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	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	150/50 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 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat4 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40) VoLTE
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE	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	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Secondary 4G network	LTE Cat4 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40) VoLTE
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Back camera (main camera)	(quad camera) 48 megapixels 8MP ultrawide f/2.2123°1/4"1.12µm 5MP macro f/2.4 5MP depth f/2.4	(quad camera) 48 megapixels 8MP ultrawide f/2.213mm1/4"1.12µm119° 5MP macro f/2.41/5"1.12µmAF 2MP depth f/2.4
Main camera resolution	8000x6000 pixels	8000x6000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	26mm (lens)	26mm (lens)
Sensor size	1/2" inches	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	Supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	4K@30fps 1080p@30/60fps 1080p@120fps (slow motion) 720p@960fps (slow motion)
📸 Front camera
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Front camera (secondary)	20 megapixels	16 megapixels
Front camera resolution	5184x3840 pixels	4608x3456 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.5 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	1/3.06" inches
Pixel size	feature not registered	1µm pixel
🔉 Sound and multimedia
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Loudspeaker	Mono sound (not stereo)	Mono sound (not stereo)
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 A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	USB Type-C (reversible)	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	Not supported	Not supported
Infrared port	Not supported	Supported
🧭 Sensors
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Virtual proximity sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	5000 mAh	5020 mAh
Charger, watts	15W Wired fast charging	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
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
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	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: Prism Black, Prism Blue, Prism Red, Prism White	• Colors: Aurora Blue, Glacier White, Interstellar Black
☢️ Radiation rate
	Galaxy A31 (SM-A315G/DSL)	Redmi Note 9S (128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	0.53W/kg (head), 0.82W/kg (body)	0.96W/kg (head), 0.4W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.72W/kg (head), 0.98W/kg (body)