Comparison between:
- Samsung Galaxy M21s
- Samsung Galaxy A3 Core
- Samsung Galaxy A41
- Samsung Galaxy A20e
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Samsung Galaxy M21s | Samsung Galaxy A3 Core | Samsung Galaxy A41 | Samsung Galaxy A20e | |
 |  Prices |  Prices |  Prices | |
| Model alias | - | SM-A013G SM-A013G/DS | SC-A415F | SM-A202FD A202FD |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 75.1 mm 7.51 cm 0.246 ft 2.957 in | 67.5 mm 6.75 cm 0.221 ft 2.657 in | 69.8 mm 6.98 cm 0.229 ft 2.748 in | 69.7 mm 6.97 cm 0.229 ft 2.744 in |
| Height | 159.2 mm 15.92 cm 0.522 ft 6.268 in | 141.7 mm 14.17 cm 0.465 ft 5.579 in | 149.8 mm 14.98 cm 0.491 ft 5.898 in | 147.4 mm 14.74 cm 0.484 ft 5.803 in |
| Thickness | 8.9 mm 0.89 cm 0.029 ft 0.35 in | 8.6 mm 0.86 cm 0.028 ft 0.339 in | 7.9 mm 0.79 cm 0.026 ft 0.311 in | 8.4 mm 0.84 cm 0.028 ft 0.331 in |
| Weight | 191 g 0.42 lbs 6.74 oz | 150 g 0.33 lbs 5.29 oz | 152 g 0.34 lbs 5.36 oz | 141 g 0.31 lbs 4.97 oz |
| Volume | 106.41 cm³ 6.46 in³ | 82.26 cm³ 5 in³ | 82.6 cm³ 5.02 in³ | 86.3 cm³ 5.24 in³ |
| Colors | Black Blue | Black Blue Red | Prism Crush Black Prism Crush Blue Prism Crush White Prism Crush Red | Black Blue |
| Body materials | Plastic | Plastic | Plastic | Plastic |
| Certification | - | - | IP65 IP68 | - |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| SIM card type | Nano-SIM | Nano-SIM | Nano-SIM | Nano-SIM |
| Number of SIM cards | 2 | 2 | 2 | 2 |
| Features | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) |
Networks
A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.
| GSM | GSM 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) | GSM 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) | GSM 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| UMTS | UMTS 850 MHz (B5) UMTS 900 MHz (B8) UMTS 1900 MHz (B2) UMTS 2100 MHz (B1) | UMTS 850 MHz (B5) UMTS 900 MHz (B8) UMTS 2100 MHz (B1) | UMTS 800 MHz (B19) UMTS 2100 MHz (B1) UMTS 1800 MHz (B9) | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz |
| LTE | LTE-FDD 800 MHz (B20) LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) | LTE-FDD 700 MHz (B28) LTE-FDD 800 MHz (B20) LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) | LTE-FDD 700 MHz (B28) LTE-FDD 850 MHz (B19) LTE-FDD 2100 MHz (B1) LTE-FDD 1800 MHz (B9) LTE-FDD 1500 MHz (B21) | LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz |
Mobile network technologies and bandwidth
Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.
| Mobile network technologies | UMTS EDGE GPRS HSPA+ LTE | UMTS EDGE GPRS HSPA+ LTE Cat 4 | UMTS EDGE HSPA+ LTE Cat 6 | UMTS EDGE GPRS HSPA+ LTE Cat 6 |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | Android 10 | Android 10 Go edition | Android 10 | Android 9.0 Pie |
| User interface (UI) | One UI 2.0 | - | One UI 2.0 | One 1.1 |
System on Chip (SoC)
A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.
| SoC | Samsung Exynos 7 Octa 9611 | MediaTek MT6739 | MediaTek Helio P65 (MT6768) | Samsung Exynos 7 Octa 7884 |
| Process technology | 10 nm | 28 nm | 12 nm | 14 nm |
| CPU | 4x 2.3 GHz ARM Cortex-A73, 4x 1.7 GHz ARM Cortex-A53 | ARM Cortex-A53 | 2x 2.0 GHz ARM Cortex-A75, 6x 1.95 GHz ARM Cortex-A55 | 2x 1.6 GHz ARM Cortex-A73, 6x 1.35 GHz ARM Cortex-A53 |
| CPU bits | 64 bit | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A | ARMv8-A | ARMv8-A |
| CPU cores | 8 | 4 | 8 | 8 |
| CPU frequency | 2300 MHz | 1300 MHz | 2000 MHz | 1600 MHz |
| GPU | ARM Mali-G72 MP3 | PowerVR GE8100 | ARM Mali-G52 MP2 | ARM Mali-G71 |
| GPU cores | 3 | - | 2 | - |
| GPU frequency | - | 570 MHz | 820 MHz | - |
| RAM capacity | 4 GB | 1 GB | 4 GB | 3 GB |
| RAM type | LPDDR4X | - | LPDDR4X | LPDDR4 |
| RAM channels | Double channel | - | Double channel | - |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 64 GB | 16 GB | 64 GB | 32 GB |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | microSD microSDHC microSDXC | microSD microSDHC microSDXC | microSD microSDHC microSDXC | microSD microSDHC microSDXC |
| UFS 2.1 | - | - | - |
Display
The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology | Super AMOLED | PLS | Super AMOLED | PLS |
| Diagonal size | 6.4 in 162.56 mm 16.26 cm | 5.3 in 134.62 mm 13.46 cm | 6.1 in 154.94 mm 15.49 cm | 5.8 in 147.32 mm 14.73 cm |
| Width | 2.68 in 68.12 mm 6.81 cm | 2.32 in 58.89 mm 5.89 cm | 2.56 in 64.93 mm 6.49 cm | 2.43 in 61.74 mm 6.17 cm |
| Height | 5.81 in 147.6 mm 14.76 cm | 4.77 in 121.06 mm 12.11 cm | 5.54 in 140.68 mm 14.07 cm | 5.27 in 133.76 mm 13.38 cm |
| Aspect ratio | 2.167:1 | 2.056:1 | 2.167:1 | 2.167:1 |
| Resolution | 1080 x 2340 pixels | 720 x 1480 pixels | 1080 x 2340 pixels | 720 x 1560 pixels |
| Pixel density | 403 ppi 158 ppcm | 311 ppi 122 ppcm | 422 ppi 165 ppcm | 296 ppi 116 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 84.37 % | 74.78 % | 87.64 % | 80.64 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch Scratch resistant |
| Infinity U Display 2.5D curved glass screen Corning Gorilla Glass 3 Peak brightness - 420 cd/m² 78960:1 | - | Infinity-U Display Always-On Display HDR10 | Corning Gorilla Glass 3 1400:1 contrast ratio 500 cd/² |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Accelerometer Compass Gyroscope Geomagnetic Fingerprint Virtual Light Sensor | Proximity Light Accelerometer | Proximity Light Accelerometer Compass Gyroscope Fingerprint Hall | Proximity Light Accelerometer Compass Gyroscope Fingerprint Hall |
| - | - | In-display fingerprint sensor | - |
Rear camera
The primary camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.
| Sensor model | - | - | - | Samsung S5K3L6 |
| Sensor type | CMOS BSI | CMOS | CMOS | ISOCELL |
| Sensor format | - | - | - | 1/3.1" |
| Pixel size | 0.8 µm 0.000800 mm | - | - | 1.12 µm 0.001120 mm |
| Aperture | f/2 | f/2.2 | f/2 | f/1.9 |
| Focal length and 35 mm equivalent | 26 mm *(35 mm / full frame) | - | 3.92 mm 26 mm *(35 mm / full frame) | 3.6 mm 27 mm *(35 mm / full frame) |
| Flash type | LED | LED | LED | LED |
| Image resolution | 9280 x 6920 pixels 64.22 MP | 3264 x 2448 pixels 7.99 MP | 8000 x 6000 pixels 48 MP | 4208 x 3120 pixels 13.13 MP |
| Video resolution | 3840 x 2160 pixels 8.29 MP | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps | 30 fps | 60 fps |
| Features | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) | Autofocus Digital zoom Geotagging Panorama HDR Touch focus Face detection Self-timer | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) |
| Secondary rear camera - 5 MP (depth) Aperture size - f/2.2 (#2) Third rear camera - 8 MP (ultra-wide angle) Sensor size - 1/4" (#3) Pixel size - 1.12 µm (#3) Aperture size - f/2.2 (#3) Angle of view - 123° (#3) | - | Secondary rear camera - 5 MP (depth-sensing) Aperture size - f/2.4 (#2) Third rear camera - 8 MP (ultra-wide-angle) Aperture size - f/2.2 (#3) | Secondary rear camera - 5 MP (ultra-wide angle) Aperture size - f/2.2 (#2) Angle of view - 123° (#2) |
Front camera
Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc.
| Sensor model | - | Samsung S5K4E6 | - | - |
| Sensor type | CMOS BSI | CMOS | - | CMOS |
| Sensor size | - | 3.6 x 2.7 mm 0.18 in | - | - |
| Sensor format | - | 1/4" | - | - |
| Pixel size | - | 1.34 µm 0.001340 mm | - | - |
| Crop factor | - | 9.61 | - | - |
| Aperture | f/2 | f/2.4 | f/2.2 | f/2 |
| Focal length and 35 mm equivalent | 26 mm *(35 mm / full frame) | 2.66 mm 25.58 mm *(35 mm / full frame) | 3.75 mm | - |
| Image resolution | 32 MP | 2592 x 1944 pixels 5.04 MP | 5760 x 4312 pixels 24.84 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 1280 x 720 pixels 0.92 MP |
| Video FPS | 30 fps | 30 fps | 30 fps | 30 fps |
| Features | Face unlock | Face unlock HDR | Face unlock | - |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece |
| Dolby Atmos for stereo headsets Widevine L1 Certification | - | - | - |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes | Yes | Yes |
| RDS | - | - | - |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS GLONASS BeiDou | GPS A-GPS GLONASS BeiDou | GPS A-GPS | GPS A-GPS GLONASS BeiDou |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot Wi-Fi Direct | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 5.0 | 5.0 | 5.0 | 5.0 |
| Features | A2DP LE | A2DP LE | A2DP AVRCP DIP HFP HID HSP MAP OPP PAN PBAP HOGP | A2DP AVRCP DIP HFP HID HSP MAP OPP PAN PBAP HOGP |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | USB Type-C | Micro USB | USB Type-C | USB Type-C |
| Version | 2.0 | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage On-The-Go | Charging Mass storage | Charging Mass storage On-The-Go | Charging Mass storage On-The-Go |
Headphone jack
The headphone jack is an audio phone connector, a.k.a. an audio jack. The most widely used one in mobile devices is the 3.5 mm headphone jack.
| Headphone jack | Yes | Yes | Yes | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering | Computer sync OTA sync Tethering VoLTE | Computer sync OTA sync Tethering NFC VoLTE ANT+ | Computer sync OTA sync Tethering NFC |
Browser
A web browser is a software application for accessing, fetching, displaying and navigating through information on the World Wide Web.
| Browser | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 |
Audio file formats/codecs
Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.
| Audio file formats/codecs | AAC AMR AMR-WB eAAC+ FLAC M4A MIDI MP3 OGG WMA WAV | AAC AMR FLAC M4A MP3 OGG WAV 3GA AWB MID XMF MXMF IMY RTTTL RTX OTA | AAC AMR AMR-WB eAAC+ FLAC M4A MIDI MP3 OGG WMA WAV | AAC AMR AMR-WB eAAC+ FLAC M4A MIDI MP3 OGG WMA WAV |
Video file formats/codecs
Mobile devices support various video file formats and codecs, which respectively store and code/decode digital video data.
| Video file formats/codecs | 3GPP 3GPP2 AVI Flash Video H.263 H.264 H.265 MKV MP4 VC-1 VP8 VP9 WebM WMV WMV7 WMV8 Xvid | MKV MP4 M4V 3GP 3G2 FLV WEBM | 3GPP 3GPP2 AVI Flash Video H.263 H.264 H.265 MKV MP4 VC-1 VP8 VP9 WebM WMV WMV7 WMV8 Xvid | 3GPP 3GPP2 AVI Flash Video H.263 H.264 H.265 MKV MP4 VC-1 VP8 VP9 WebM WMV WMV7 WMV8 Xvid |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 6000 mAh | 3000 mAh | 3500 mAh | 3000 mAh |
| Type | Li-Ion | Li-Ion | Li-Polymer | Li-Polymer |
| 4G talk time | - | 17 h 1020 min 0.7 days | - | - |
| Charger output power | 5 V / 3 A | 5 V / 1 A | 5 V / 2 A 9 V / 1.67 A | 5 V / 2 A 9 V / 1.67 A |
| Features | Fast charging Non-removable | Non-removable | Fast charging Non-removable | Non-removable |
Specific Absorption Rate (SAR)
The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg.
| Head SAR (EU) | 0.492 W/kg | 0.638 W/kg | - | 0.498 W/kg |
| Body SAR (EU) | 1.13 W/kg | 1.18 W/kg | - | 1.303 W/kg |
| Head SAR (USA) | - | - | - | 0.43 W/kg |
| Body SAR (USA) | - | - | - | 0.5 W/kg |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | SAR (Specific Absorption Rate) India: head - 0.468 W/kg | - | NTT DoCoMo Japan edition | - |
| Samsung Galaxy M21s | Samsung Galaxy A3 Core | Samsung Galaxy A41 | Samsung Galaxy A20e |