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Samsung Galaxy A17 5G vs Samsung Galaxy A51

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

Better figure, where one is clearly better

SamsungGalaxy A17 5GSamsungGalaxy A51
Overview
ReleasedAugust 2025December 2019
Display
Screen size6.7″6.5″
Resolution2340 × 10802400 × 1080
Sharpness385 pixels per inch405 pixels per inch
PanelOLEDOLED
Refresh rate90 Hz–
Display typeSuper AMOLED, FHD+, 16M colours; 6.7″ full rectangle, 6.5″ with rounded cornersSuper AMOLED Infinity-O display; 6.3-inch viewable diagonal accounting for rounded corners
Screen protectionCorning Gorilla Glass Victus (front)–
Performance
ChipExynos 1330Exynos 9611
Memory4 GB4 GB
Storage128 GB128 GB
CPUOcta-core (2.4 GHz, 2 GHz)Octa-core, four cores at 2.3 GHz and four at 1.7 GHz; Exynos 9611 confirmed by Samsung support
Storage type–Dedicated microSD slot supports cards up to 512 GB; 107 GB available on the 128 GB model
Cameras
Main camera50 MP48 MP
Ultra wide camera5 MP12 MP
Telephoto cameraNoneNone
Optical zoomNoneNone
Front camera13 MP32 MP
Main camera50 MP wide, F1.8, autofocus, OIS48 MP, F2.0, autofocus; no optical image stabilisation
Ultra wide camera5 MP, F2.212 MP, F2.2
Front camera13 MP, F2.032 MP, F2.2, fixed focus
ZoomDigital zoom up to 10xDigital zoom up to 8×
Video recordingUp to FHD (1920 × 1080) at 30 fps; slow motion at 120 fps (HD)UHD 4K 3840 × 2160 at 30 fps; HD slow motion at 240 fps
Camera features2 MP F2.4 macro camera; night shots up to 2.5× brighter than the previous model (Samsung)5 MP F2.4 macro and 5 MP F2.2 depth cameras; Super Steady ultra-wide video in Full HD; rear flash
Battery and charging
Battery5,000 mAh4,000 mAh
Video playback (maker's claim)Up to 18 hoursUp to 20 hours
Wired chargingUp to 25 WUp to 15 W
Wireless chargingNoneNone
Battery life detailAt least 1,200 charge cycles; EU energy class B4,000 mAh typical, 3,890 mAh rated; up to 20 hours video playback
Wired charging25 W fast charging15 W fast charging
Connectivity
Satellite messagingYes–
Mobile network5G Sub6 (FDD, TDD); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSM4G LTE, 3G WCDMA and 2G GSM
SIMDual nano-SIM, with the second slot shared with microSD (UK model)Dual nano-SIM with separate microSD slot
Wi-FiWi-Fi 5 (802.11a/b/g/n/ac), 2.4 and 5 GHz, VHT80Wi-Fi 5 (802.11a/b/g/n/ac), 2.4 and 5 GHz
BluetoothBluetooth 5.3Bluetooth 5.0
NFC–Supported
Satellite featuresWorks 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 2.0USB Type-C, USB 2.0
PositioningGPS, Glonass, Beidou, Galileo, QZSSGPS, GLONASS, BeiDou and Galileo
Design
TypeStandardStandard
Weight192 g172 g
Thickness7.5 mm7.9 mm
Height × width164.4 × 77.9 mm158.5 × 73.6 mm
Water and dust resistanceIP54–
ColoursBlack, Grey, BluePrism Crush Black, White and Blue
ButtonsKey Island 2.0; side key can open Gemini–
Water resistance detailIP54, limited dust and splash resistance; not advised for beach or pool use–
BiometricsFingerprint sensorIn-screen fingerprint reader
SensorsAccelerometer, fingerprint sensor, gyro sensor, geomagnetic sensor, light sensor, virtual proximity sensingAccelerometer, fingerprint sensor, gyroscope, geomagnetic sensor, Hall sensor, light sensor and virtual proximity sensing
SpeakersNo stereo support (Samsung UK spec)Mono speaker and 3.5 mm headphone socket
Software
Operating systemAndroidAndroid
Software at launchOne UI 7 (Android 15)Android 10 with One UI 2 (TechRadar)
Safety features–Samsung Knox
Software updatesSix OS upgrades and six years of security updates; security updates until 31 August 2031 (UK)–
AI featuresGemini Live; Circle to Search with Google–

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