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Samsung Galaxy S21 vs Samsung Galaxy S25 Edge

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SamsungGalaxy S21SamsungGalaxy S25 Edge
Overview
ReleasedJanuary 2021May 2025
Display
Screen size6.2″6.7″
Resolution2400 × 10803120 × 1440
Sharpness424 pixels per inch513 pixels per inch
PanelOLEDLTPO OLED
Refresh rate120 Hz120 Hz
Display typeFlat FHD+ Dynamic AMOLED 2X Infinity-O Display (2,400 × 1,080), HDR10+ certified; adaptive 120 Hz (48–120 Hz); 6.2 inches as a full rectangle, 6.1 inches with rounded cornersDynamic AMOLED 2X, Quad HD+, 16M colours; Super Smooth 120 Hz adaptive refresh rate (1–120 Hz); 6.7 inches as a full rectangle, 6.5 inches allowing for the rounded corners
Pixel density421 ppi–
Brightness detail1,300 nits peak–
Screen protectionCorning Gorilla Glass Victus frontCorning Gorilla Glass Ceramic 2
Display featuresEye Comfort ShieldVision booster; Adaptive colour tone; ProScaler image upscaling; mDNIe image processing
Performance
ChipExynos 2100Snapdragon 8 Elite for Galaxy
Memory8 GB12 GB
Storage128 GB, 256 GB256 GB, 512 GB
CPU5 nm, 64-bit octa-core, 2.9 GHz + 2.8 GHz + 2.2 GHz; 8 GB of LPDDR5 RAMOcta-core (4.47 GHz, 3.5 GHz); 3 nm
GPU–Real-time ray tracing; Vulkan optimisation
Cooling–Vapour chamber 10% larger than the Galaxy S25+'s, with a new hole structure in the front metal frame and a tailored thermal interface material
Storage type128 or 256 GB; no microSD slot–
Cameras
Main camera12 MP200 MP
Ultra wide camera12 MP12 MP
Telephoto camera64 MPNone
Optical zoom1.1×None
Front camera10 MP12 MP
Main camera12 MP wide-angle, Dual Pixel AF, OIS, F1.8, 1.8 µm, 79°200 MP wide, F1.7, OIS, autofocus
Ultra wide camera12 MP fixed focus, F2.2, 1.4 µm, 120°12 MP, F2.2, autofocus; macro shots
Telephoto camera64 MP, phase detection AF, OIS, F2.0, 0.8 µm, 76°; 1.1x optical zoom (MobileSyrup)–
Front camera10 MP Dual Pixel AF, F2.2, 1.22 µm, 80°12 MP, F2.2, autofocus
Zoom3x Hybrid Optic Zoom; 30x Space Zoom2x optical-quality zoom (Adaptive Pixel sensor); digital zoom up to 10x
Video recording8K at 24 fps; 4K at 60 fpsUp to 8K (7680 × 4320) at 30 fps; slow motion at 240 fps (FHD) and 120 fps (FHD and UHD)
Camera features–ProVisual Engine; Nightography; Object-aware Engine for portraits; Audio Eraser; Auto Trim
Battery and charging
Battery4,000 mAh3,900 mAh
Video playback (maker's claim)Up to 20 hoursUp to 24 hours
Wired chargingUp to 25 WUp to 25 W
Wireless chargingUp to 15 WYes (wattage not published)
Battery life detail4,000 mAh typical, 3,880 mAh rated; wireless video playback up to 20 hours; internet use up to 14 hours (LTE) or 15 hours (Wi-Fi); talk time up to 33 hours (4G)3,900 mAh typical, 3,786 mAh rated; at least 2,000 charge cycles; EU energy class A, 40 h 5 min per charge cycle
Wired chargingUSB PD 3.0 (PPS) fast charging, AFC and QC2.0 compatible; up to 25 WUp to 55% in around 30 minutes with a 25 W adapter (sold separately); compatible with QC2.0 and AFC/PD
Wireless chargingFast Wireless Charging 2.0 (WPC); up to 15 WFast Wireless Charging (WPC); Samsung doesn't state the wattage
Charges other devicesWireless PowerShareWireless PowerShare
Design
TypeStandardStandard
Weight169 g163 g
Thickness7.9 mm5.8 mm
Height × width151.7 × 71.2 mm158.2 × 75.6 mm
Water and dust resistanceIP68IP68
Stylus–No
MaterialsMetal frame with Contour Cut camera housing; Deluxe Frosted Haze matte finishTitanium frame (not the volume and side keys); Corning Gorilla Glass Ceramic 2 front, Corning Gorilla Glass Victus 2 back
ColoursPhantom Violet, Phantom Grey, Phantom Pink, Phantom WhiteTitanium Silver, Titanium Jetblack, Titanium Icyblue
Water resistance detailIP68, up to 1.5 m of fresh water for up to 30 minutes; not advised for beach or pool useIP68, dust-tight and tested for submersion in up to 1.5 m of fresh water for up to 30 minutes; not advised for beach or pool use
BiometricsUltrasonic in-screen fingerprint sensor, face recognitionFingerprint sensor
SensorsUltrasonic fingerprint, accelerometer, barometer, gyro, geomagnetic, Hall, proximity, ambient lightAccelerometer, barometer, fingerprint sensor, gyro sensor, geomagnetic sensor, Hall sensor, light sensor, proximity sensor
SpeakersStereo speakers; UHQ 32-bit and DSD64/128 playbackStereo speakers
Software
Operating systemAndroidAndroid
Software at launchAndroid 11One UI 7 (Android 15)
Software updates–Security updates until 31 May 2032 (UK)
AI features–Galaxy AI, including Now Brief, Now Bar, Audio Eraser and Drawing Assist; Gemini Live with camera and screen sharing; Gemini on the side button
Connectivity
Satellite messaging–Yes
Mobile network5G (NSA, SA), Sub65G Sub6 (FDD, TDD, SDL); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSM
SIMNano-SIM and eSIMTwo nano-SIMs, nano-SIM and eSIM, or dual eSIM
Wi-FiWi-Fi 6 (802.11a/b/g/n/ac/ax), 2.4 and 5 GHz, HE80, MIMO, 1024-QAMWi-Fi 7 (802.11a/b/g/n/ac/ax/be), 2.4, 5 and 6 GHz, EHT320, MIMO, 4096-QAM
BluetoothBluetooth 5.0Bluetooth 5.4
Ultra Wideband–Yes
NFCYesYes
Satellite features–Works with O2 Satellite in the UK (texts, supported apps, maps and location sharing where O2 has no signal; not emergency calls)
USBUSB Type-C, USB 3.2 Gen 1; DisplayPort output up to 4K at 60 fpsUSB Type-C, USB 3.2 Gen 1
PositioningGPS, Galileo, Glonass, BeiDouGPS, Glonass, Beidou, Galileo, QZSS

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