Samsung Galaxy S21 5G vs. Samsung Galaxy A12

Phone Comparison, Reviews and Tests

In depth comparison and review of Samsung Galaxy S21 5G and Samsung Galaxy A12. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

Samsung Galaxy S21 5G vs. Samsung Galaxy A12 Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy S21 5G Samsung Galaxy A12
Product Type Smartphone Smartphone
Manufacturer Model Number SM-G991U1 SM-A127F/DSN
Form Factor Touch Touch
Height 151.7 mm 164 mm Samsung Galaxy A12 has greater height than Samsung Galaxy S21 5G.
Width 71.2 mm 75.8 mm Samsung Galaxy A12 has greater width than Samsung Galaxy S21 5G.
Depth 7.9 mm 8.9 mm Samsung Galaxy S21 5G is narrower than Samsung Galaxy S21 5G.
Weight 171 g 205 g Samsung Galaxy S21 5G is lighter than Samsung Galaxy S21 5G.
Body Colour Phantom grey | Phantom white Black | Blue
Protection Dustproof, splashproof, water-resistant -
Waterproof (Water-resistant) Yes - Samsung Galaxy S21 5G is waterproof.
IP rating IP68 -
Repairability Index - 8.3 (out of 10)
SAR Value 1.58 W/kg (simultaneous), 1.11 W/kg (wireless router), 1.08 W/kg (body), 0.74 W/kg (head) 0.419 W/kg (head), 1.513 W/kg (body)
Connector Type USB Type-C - 24 pin USB-C USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Nano SIM, Electronic SIM card (e-SIM) Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY Samsung Galaxy S21 5G Samsung Galaxy A12
Display Type OLED display LCD display
Display Technology Infinity-O Dynamic AMOLED 2X PLS TFT
Screen Size (Display Size) 6.2" 6.5" Samsung Galaxy A12 has larger screen size than Samsung Galaxy S21 5G.
Screen Resolution (Display Resolution) 2400 x 1080 pixels 1600 x 720 pixels Samsung Galaxy S21 5G has better screen resolution than Samsung Galaxy A12.
Display Format Full HD+ HD+
Pixel Density 421 ppi -
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
HDR Yes - Samsung Galaxy S21 5G has HDR.
HDR Technology HDR10+ -
Display Enhancement Technology Eye Comfort Shield -
Display Refresh Rate 120 Hz -
Display Features AOD(Always On Display), Video Wallpaper Infinity V Display
Display Protection (Screen Protector) Corning Gorilla Glass Victus (scratch resistant glass) -
PROCESSOR Samsung Galaxy S21 5G Samsung Galaxy A12
Processor Type (CPU) Qualcomm Snapdragon 888 -
Clock Speed 2.84 GHz 2 GHz Samsung Galaxy S21 5G has higher clock speed than Samsung Galaxy A12.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
MEMORY Samsung Galaxy S21 5G Samsung Galaxy A12
RAM LPDDR5 SDRAM - 8 GB 3 GB Samsung Galaxy S21 5G has more RAM than Samsung Galaxy A12.
Internal Memory Size (Storage Capacity) 128 GB 32 GB Samsung Galaxy S21 5G has more internal memory than Samsung Galaxy A12.
User Memory 101.2 GB 19.5 GB
Supported Flash Memory Cards (Expandable Memory) - microSDHC, microSD, microSDXC - up to 1 TB
CAMERA Samsung Galaxy S21 5G Samsung Galaxy A12
MAIN CAMERA
Number of Main Cameras 3 4
Sensor Resolution 12 Megapixel 48 Megapixel Samsung Galaxy A12 has better camera resolution than Samsung Galaxy S21 5G.
Sensor Size 1/1.76" -
Lens Type Wide-angle lens -
Lens Aperture F/1.8 F/2.0 Samsung Galaxy S21 5G has better lens aperture than Samsung Galaxy S21 5G.
Field of View (FoV) 79 degree(s) -
Pixel Size 1.8 μm -
Optical Image Stabiliser (OIS) Optical Image Stabiliser (OIS) - Samsung Galaxy S21 5G has optical stabilisation.
Focus Adjustment Automatic Automatic
Laser Auto Focus Yes -
Optical Zoom 3x -
Digital Zoom 30x 10x Samsung Galaxy S21 5G has better digital zoom than Samsung Galaxy A12.
Self-Timer Delay Yes -
Special Effects Face retouch, Grid Line -
HDR Mode Auto HDR mode -
Camera Modes Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Portrait, Night, Motion Photo, Mountain, Single Take, Pro Video, Portrait video, Director's View -
Light Source High CRI LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (8K) at 24 fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps 1920 x 1080 (1080p) at 30 fps
Camera Features (Functions) Playback zoom, Motion photo, blink detection, QR-code scanner, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Lens smudge, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Super Speed Dual Pixel AF, Quick Measure, Zoom-In Mic, HEIF image capture, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video, AR Doodle, HEVC (High Efficiency Video coding) support, Microphone Control (Pro Video only) -
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 5 Megapixel Samsung Galaxy S21 5G has better second camera resolution than Samsung Galaxy A12.
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) 120 degree(s) 123 degree(s) Samsung Galaxy A12 has larger second camera lens field of view than Samsung Galaxy S21 5G.
Pixel Size (2nd Camera) 1.4 μm -
THIRD CAMERA
Sensor Resolution (3rd Camera) 64 Megapixel 2 Megapixel Samsung Galaxy S21 5G has higher resolution third camera than Samsung Galaxy A12.
Sensor Size (3rd Camera) 1/1.72" -
Lens Type (3rd Camera) Telephoto lens -
Lens Aperture (3rd Camera) F/2.0 F/2.4 Samsung Galaxy S21 5G has better third camera lens aperture than Samsung Galaxy S21 5G.
Field of View (3rd Camera) 76 degree(s) -
Pixel Size (3rd Camera) 0.8 μm -
Optical Image Stabiliser (OIS) Optical Image Stabiliser (OIS) - Samsung Galaxy S21 5G has optical stabilisation of the third camera.
Camera Functions (3rd Camera) - Macro camera
FOURTH CAMERA
Sensor Resolution (4th Camera) - 2 Megapixel
Lens Aperture (4th Camera) - F/2.4
Camera Functions (4th Camera) - Depth camera
Camera Features (4th Camera) - Live Focus
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 10 Megapixel 8 Megapixel Samsung Galaxy S21 5G has better front camera resolution than Samsung Galaxy A12.
Lens Aperture (Front) F/2.2 F/2.2 Both phones have the same front camera lens aperture.
Field of View (Front) 80 degree(s) -
Pixel Size (Front) 1.22 μm -
Focus Adjustment Automatic -
Camera Features (Front) Dual Pixel AF Live Focus
BATTERY AND CHARGING Samsung Galaxy S21 5G Samsung Galaxy A12
Battery Capacity (Battery Size) 4000 mAh 5000 mAh Samsung Galaxy A12 has larger battery capacity than Samsung Galaxy S21 5G.
Fast Charging Technology Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Power Delivery 3.0 Adaptive Fast Charging Both phones have fast charging technology.
Wireless Charging Yes - Samsung Galaxy S21 5G can be charged wirelessly.
Wireless Charging Standards WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare -
Talk Time 1800 minutes 3420 minutes Samsung Galaxy A12 has longer battery life when making calls than Samsung Galaxy S21 5G.
Run Time Details Talk (LTE): up to 1800 min
Active online usage (LTE): up to 14 hrs
Active online usage (Wi-Fi): up to 15 hrs
Playback (wireless video): up to 19 hrs
Playback (wireless audio): up to 72 hrs
Talk: up to 3420 min
Active online usage (LTE): up to 20 hrs
Active online usage (Wi-Fi): up to 20 hrs
Playback (video): up to 19 hrs
Playback (audio): up to 104 hrs
CELLULAR Samsung Galaxy S21 5G Samsung Galaxy A12
Technology CDMA2000 1X / GSM / WCDMA (UMTS) WCDMA (UMTS) / GSM
Mobile Broadband Generation 5G 4G Samsung Galaxy S21 5G has more advanced generation mobile network.
Operating System Android 11 -
Intelligent Assistant Bixby -
Payment Technology Samsung Pay -
Navigation GPS, GLONASS, Galileo GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Samsung Galaxy S21 5G Samsung Galaxy A12
Data Transmission FDD-LTE, TDD-LTE, 5G NR FR1, 5G NR FR2 FDD-LTE, TDD-LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 4, Band 5, Band 8 Band 1, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 900 2100, 850, 900
4G LTE Band Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 14, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 30, Band 38, Band 39, Band 40, Band 41, Band 46, Band 48, Band 66, Band 71 Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700 PS, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 5150, TDD 3600, FDD 1700 - 2110 AWS-3, FDD 600 FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500
5G NR Band N41, n71, n260, n261 -
5G NR Frequency TDD TD 2500, FDD 600, TDD 39GHz, TDD 28GHz -
Wireless Interface IEEE 802.11a/b/g/n/ac/ax IEEE 802.11b/g/n
Bluetooth Bluetooth 5.0 Bluetooth 5.0
NFC Yes Yes Both phones have an NFC reader for mobile payments.
MEDIA Samsung Galaxy S21 5G Samsung Galaxy A12
Supported Digital Audio Standards WAV, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 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, 3GP, M4V, WebM, 3G2, MP4 MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
Sound Enhancements Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound -
FEATURES Samsung Galaxy S21 5G Samsung Galaxy A12
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, barometer, gyro sensor, hall sensor, geomagnetic sensor Accelerometer
Security Devices Fingerprint reader (under display), face recognition Fingerprint reader
Additional Phone Features MIMO technology, Screen Write, notification flashlight, Smart Select, Fast Charging, Samsung KNOX, Smart View, Live message, Screen off memo, Samsung DeX support, Bixby Vision, TalkBack, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, Bixby key, Bluetooth Scalable Codec, Samsung Knox Vault, Private Share function, Enhanced Game Booster, Air Command Samsung KNOX, Samsung Smart Switch, Virtual Light Sensing, Virtual Proximity Sensing
OTHERS Samsung Galaxy S21 5G Samsung Galaxy A12
Included Accessories SIM card removal tool, USB-C to USB-C cable -
Compliant Standards VDE, IP68, HAC (Hearing Aid Compatible), SGS Eye Care Display Certification -
Max Depth of Water Resistance 1.5 m -
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