Samsung Galaxy A40 vs. Samsung Galaxy M31s

Phone Comparison, Reviews and Tests

Detailed comparison and review of Samsung Galaxy A40 and Samsung Galaxy M31s. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.

Phone Specifications Comparison

Samsung Galaxy A40 vs. Samsung Galaxy M31s Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy A40 Samsung Galaxy M31s
Product Type Smartphone Smartphone
Manufacturer Model Number SM-A405FN/DS SM-M317F/DSN
Form Factor Touch Touch
Height 144.4 mm 159.3 mm Samsung Galaxy M31s has greater height than Samsung Galaxy A40.
Width 69.2 mm 74.4 mm Samsung Galaxy M31s has greater width than Samsung Galaxy A40.
Depth 7.9 mm 9.3 mm Samsung Galaxy A40 is narrower than Samsung Galaxy A40.
Weight 140 g 203 g Samsung Galaxy A40 is lighter than Samsung Galaxy A40.
Body Colour Blue | Coral | White | Black Black
Waterproof (Water-resistant) - -
SAR Value 1.34 W/kg (body), 0.49 W/kg (head) 1.365 W/kg (body), 0.756 W/kg (head)
Connector Type USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
SIM Card Configuration Details Nano SIM + nano SIM/microSD -
DISPLAY Samsung Galaxy A40 Samsung Galaxy M31s
Display Type OLED display OLED display
Display Technology Super AMOLED Super AMOLED
Screen Size (Display Size) 5.9" 6.5" Samsung Galaxy M31s has larger screen size than Samsung Galaxy A40.
Screen Resolution (Display Resolution) 2340 x 1080 pixels 2400 x 1080 pixels Samsung Galaxy M31s has better screen resolution than Samsung Galaxy A40.
Display Format Full HD+ Full HD+
Pixel Density 439 ppi -
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
Display Enhancement Technology Blue light filter -
Display Features Always-on display, Infinity Display, Edge-to-Edge screen Night mode, Edge-to-Edge screen, Infinity O display
PROCESSOR Samsung Galaxy A40 Samsung Galaxy M31s
Processor Type (CPU) Samsung Exynos -
Processor Number 7904 -
Clock Speed 1.8 GHz 2.3 GHz Samsung Galaxy M31s has higher clock speed than Samsung Galaxy A40.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
MEMORY Samsung Galaxy A40 Samsung Galaxy M31s
RAM 4 GB 6 GB Samsung Galaxy M31s has more RAM than Samsung Galaxy A40.
Internal Memory Size (Storage Capacity) 64 GB 128 GB Samsung Galaxy M31s has more internal memory than Samsung Galaxy A40.
User Memory 49.4 GB 106.5 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 512 GB microSDHC, microSD, microSDXC - up to 512 GB
CAMERA Samsung Galaxy A40 Samsung Galaxy M31s
MAIN CAMERA
Number of Main Cameras 2 4
Sensor Resolution 16 Megapixel 64 Megapixel Samsung Galaxy M31s has better camera resolution than Samsung Galaxy A40.
Lens Type Wide-angle lens -
Lens Aperture F/1.7 F/1.8 Samsung Galaxy A40 has better lens aperture than Samsung Galaxy A40.
Field of View (FoV) - 81 degree(s)
Focus Adjustment Automatic Automatic
Digital Zoom - 10x
Camera Modes Panorama, Pro mode, HYPERLAPSE, portrait mode, AR Emoji, Flowers, Animals, Landscapes, Trees, Sky, Mountains, Beaches, Street scenes, Waterfalls, Snow, Birds, Text, Food, Indoor, Night view, Sunsets, Portaits, Green, Sunrises, Shore Slow motion video, Bokeh Mode, Live Focus mode
Light Source LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 480 fps
Camera Features (Functions) AR sticker, Scene Optimiser, 20 different scenes, Smart professional framing, fault detection Background blur
SECOND CAMERA
Sensor Resolution (2nd Camera) 5 Megapixel 12 Megapixel Samsung Galaxy M31s has better second camera resolution than Samsung Galaxy A40.
Lens Type (2nd Camera) Ultra wide-angle lens Ultra wide-angle lens
Lens Aperture (2nd Camera) F/2.2 F/2.2 Both phones have the same second camera lens aperture.
Field of View (2nd Camera) 123 degree(s) 123 degree(s) Both phones have the same second camera lens field of view.
THIRD CAMERA
Sensor Resolution (3rd Camera) - 5 Megapixel
Lens Aperture (3rd Camera) - F/2.4
Camera Functions (3rd Camera) - Depth camera
FOURTH CAMERA
Sensor Resolution (4th Camera) - 5 Megapixel
Lens Aperture (4th Camera) - F/2.4
Camera Functions (4th Camera) - Macro camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 25 Megapixel 32 Megapixel Samsung Galaxy M31s has better front camera resolution than Samsung Galaxy A40.
Lens Aperture (Front) F/2.0 F/2.2 Samsung Galaxy A40 has better front lens aperture than Samsung Galaxy A40.
Focus Adjustment Automatic Focus free
Camera Modes (Front) Portrait mode, AR Emoji, Motion Photos -
Light Source (Front) Display flash -
Camera Features (Front) Floating camera button Live Focus
BATTERY AND CHARGING Samsung Galaxy A40 Samsung Galaxy M31s
Battery Capacity (Battery Size) 3100 mAh 6000 mAh Samsung Galaxy M31s has larger battery capacity than Samsung Galaxy A40.
Fast Charging Technology Samsung Fast Charging Samsung Super Fast Charging Both phones have fast charging technology.
Talk Time 1080 minutes 3060 minutes Samsung Galaxy M31s has longer battery life when making calls than Samsung Galaxy A40.
Run Time Details Active online usage (3G): up to 9 hrs
Active online usage (4G): up to 11 hrs
Active online usage (Wi-Fi): up to 11 hrs
Playback (video): up to 14 hrs
Playback (audio): up to 62 hrs
Talk (3G): up to 1080 min
Active online usage (LTE): up to 22 hrs
Active online usage (Wi-Fi): up to 22 hrs
Playback (video): up to 27 hrs
Playback (audio): up to 125 hrs
Talk (4G): up to 3060 min
CELLULAR Samsung Galaxy A40 Samsung Galaxy M31s
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Android 9.0 Pie -
User Interface Samsung One UI One UI
Intelligent Assistant Bixby -
Navigation GPS, GLONASS, BeiDou, Galileo GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Samsung Galaxy A40 Samsung Galaxy M31s
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE FDD-LTE, TDD-LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 850, 900 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40, Band 41 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 20, Band 26, Band 28, Band 38, Band 40, Band 41, Band 66
4G LTE Frequency FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2600, TDD 2300, TDD 2500 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
Wireless Interface IEEE 802.11a/b/g/n/ac, ANT+ IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 5.0 LE Bluetooth 5.0
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA Samsung Galaxy A40 Samsung Galaxy M31s
Supported Digital Audio Standards WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID
Supported Digital Video Standards MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
Sound Enhancements Dolby Atmos sound technology -
FEATURES Samsung Galaxy A40 Samsung Galaxy M31s
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor, geomagnetic sensor Accelerometer, ambient light sensor, proximity sensor, gyro sensor, geomagnetic sensor
Security Devices Face recognition, fingerprint reader Face recognition, fingerprint reader
Additional Phone Features Alarm Clock, Fast Charging Samsung KNOX, Game Booster, Samsung Smart Switch, Virtual Light Sensing
OTHERS Samsung Galaxy A40 Samsung Galaxy M31s
Included Accessories Power adapter Power adapter
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