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Samsung Galaxy A31 (SM-A315G/DS 128GB/6GB) vs Xiaomi Redmi Note 9S (128GB)

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

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Compare Xiaomi Redmi Note 9S X Samsung Galaxy A31 (SM-A315G/DS 128GB/6GB) 07Points
6.4"
AMOLED

1080x2400

48
MP

20mp

6GB
RAM

Octa-core

5000
mAh

(Non removable)

vs
12Points Xiaomi Redmi Note 9S (128GB) Compare Samsung Galaxy A31 X
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!

Galaxy A31 (SM-A315G/DS 128GB/6GB)} 7 Advantages Samsung Galaxy A31 (SM-A315G/DS 128GB/6GB) vs Redmi Note 9S (128GB)} 12 Advantages Xiaomi Redmi Note 9S (128GB)
+185 grams (6.48 ounces)13%
Lighter
vs209 grams (7.32 ounces)
+8.6 millimeters (0.34 inches)2%
Thinner
vs8.8 millimeters (0.35 inches)
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
vsTFT IPS LCD
+411 PPI4%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs395 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
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
2GHz 64bit Octa-core (12nm)vs+2.3GHz 64bit Octa-core (8nm)28%
More powerful processor, you can open your applications faster
eMMC 5.1vs+UFS 2.1Advantage
Fastest write and read storage.
Not supportedvs+HDR10Advantage
The HDR10 display provides vibrant colors and more details
6.4"vs+6.67"4%
Larger screen
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 Mbpsvs+(4G LTE-A) 800 Mbps4 times
Faster for surfing the internet and download files
Virtual proximity sensorvs+Proximity sensorAdvantage
Sensors help you use the device
5000 mAhvs+5020 mAh1%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
15Wvs+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 supportedvs+Gorilla Glass 5Advantage
Protection against scratches on the screen lets you carry your phone with your keys
Not supportedvs+P2i certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

34 Common items in both devices
6GB LPDDR4X
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
+27 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 Clear highlight

📱 Model features

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
ModelGalaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
Other model namesGalaxy A31 SM-A315G/Dual-Sim NFC (128GB + 6GB RAM)Xiaomi Note 9S (M2003J6A1G Global version) 6GB RAM
Country or region availablePhilippinesHong KongIndonesiaMalaysiaThailandTaiwanVietnam
Philippines, Hong Kong, Indonesia, Malaysia, Thailand, Taiwan, Vietnam
(Global, International)
(Global, International)
BrandSamsungXiaomi
Release date4/27/2020, Announced: 3/24/20204/30/2020, Announced: 3/23/2020
Depth8.6 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)
Weight185 grams (6.48 ounces)209 grams (7.32 ounces)
Build, materialsPlastic body, glass frontPlastic body, glass front/back
Protection against water and othersNot supportedP2i certified: water repellent nano-coating

📲 Display

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
Display typeSuper AMOLEDTFT IPS LCD
Screen size6.4" inches6.67" inches
Screen-to-body ratio~84.9% (screen-to-body ratio)~84.5% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)411 PPI395 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedGorilla Glass 5
Refresh rate60Hz60Hz
Display featuresNot supported450nits[typ]
HDR10

🤖 Operating System

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
System versionAndroid 10Android 10
Firmware updateAndroid 11Android 11
User InterfaceOne UI 2.5 / 3.1MIUI 11 / 12

⚙️ Processor

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
Chipset64bit: MediaTek Helio P65 (MT6768) (12nm)64bit: Qualcomm Snapdragon 720G (SM7125) (8nm)
CPUOcta-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 controllerARM Mali-G52 MC2 (820MHz)Qualcomm Adreno 618 (750MHz)
Performance (benchmark)feature not registeredAnTuTu: 279625 (v8)
Geekbench: 1785 (v5.1)
GFXBench: 15fps (ES 3.1 onscreen)

💽 Memory and storage

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
RAM memory6GB LPDDR4X6GB LPDDR4X
Internal storage128GB (104GB available)
eMMC 5.1
128GB (106GB available)
UFS 2.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)

📶 Mobile networks

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated 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 / Upload150/50 Mbps800/150 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bands Expand band details Collapse 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 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 networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Secondary 4G networkLTE 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 networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A

📷 Camera

Galaxy A31 (SM-A315G/DS 128GB/6GB)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 resolution8000x6000 pixels8000x6000 pixels
Video recording (primary)Full HD (1920x1080) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/2.0 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm 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 supportedSupported
HDRHDR photo on both camerasHDR photo on both cameras
Camera extrasfeature not registered4K@30fps
1080p@30/60fps
1080p@120fps (slow motion)
720p@960fps (slow motion)

📸 Front camera

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
Front camera (secondary)20 megapixels16 megapixels
Front camera resolution5184x3840 pixels4608x3456 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.5 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registered1/3.06" inches
Pixel sizefeature not registered1µm pixel

🔉 Sound and multimedia

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
LoudspeakerMono sound (not stereo)Mono sound (not stereo)
Active noise cancellation2 microphones or more2 microphones or more
RadioFMFM
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

🔌 Connectivity

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
Audio output3.5mm jack3.5mm jack
TV outputUSB Type-C (reversible)USB Type-C (reversible)
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 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
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCSupportedNot supported
Infrared portNot supportedSupported

🧭 Sensors

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
SensorsAccelerometer
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 alertSupportedSupported

🔋 Battery

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
Battery typeLiPo: li-ion polymer (Non removable)LiPo: li-ion polymer (Non removable)
Battery capacity5000 mAh5020 mAh
Charger, watts15W Wired fast charging18W Wired fast charging
Inductive / wireless chargingNot supportedNot supported
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered

➕ Other features

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneous• Colors: Prism Black, Prism Blue, Prism Red, Prism White• Colors: Aurora Blue, Glacier White, Interstellar Black

☢️ Radiation rate

Galaxy A31 (SM-A315G/DS 128GB/6GB)Redmi Note 9S (128GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.96W/kg (head), 0.4W/kg (body)
SAR 2W/kg (Europe, UK, etc.)0.488W/kg (head), 1.68W/kg (body)0.72W/kg (head), 0.98W/kg (body)
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