Samsung Galaxy A40 vs Samsung Galaxy A57 5G

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Galaxy A40 compared with Galaxy A57 5G

	SamsungGalaxy A40	SamsungGalaxy A57 5G
Overview
Released
Released	April 2019	April 2026
Display
Screen size
Screen size	5.9″	6.7″
Resolution
Resolution	2340 × 1080	2340 × 1080
Sharpness
Sharpness	437 pixels per inch (better)	385 pixels per inch
Panel
Panel	OLED	OLED
Refresh rate
Refresh rate	–	120 Hz
Display type
Display type	Full HD+ Super AMOLED Infinity-U Display	Super AMOLED+, FHD+, 16M colours; up to 120 Hz refresh rate
Screen protection
Screen protection	–	Corning Gorilla Glass Victus+
Display features
Display features	–	Vision Booster; SGS Eye Care certification
Performance
Chip
Chip	Exynos 7904	Exynos 1680
Memory
Memory	4 GB	8 GB – 12 GB (better)
Storage
Storage	64 GB	128 GB, 256 GB, 512 GB (better)
CPU
CPU	Exynos 7904 octa-core at 1.8 GHz and 1.6 GHz; chip identified in Notebookcheck's exact-model review	Octa-core (2.9 GHz, 2.6 GHz, 1.9 GHz)
Cooling
Cooling	–	Vapour chamber 13% larger than on the Galaxy A56 5G
Storage type
Storage type	Dedicated microSD slot supports cards up to 512 GB	–
Cameras
Main camera
Main camera	16 MP	50 MP (better)
Ultra wide camera
Ultra wide camera	5 MP	12 MP
Telephoto camera
Telephoto camera	None	None
Optical zoom
Optical zoom	None	None
Front camera
Front camera	25 MP (better)	12 MP
Main camera
Main camera	16 MP, F1.7, autofocus; no optical image stabilisation	50 MP wide, F1.8
Ultra wide camera
Ultra wide camera	5 MP, F2.2, 123° field of view	12 MP, F2.2
Front camera
Front camera	25 MP, F2.0, fixed focus	12 MP, F2.2
Zoom
Zoom	–	Digital zoom up to 10x
Video recording
Video recording	Full HD 1920 × 1080 at 30 fps	Up to 4K (3840 × 2160) at 30 fps; slow motion at 240 fps (HD)
Camera features
Camera features	–	Rear camera OIS; 5 MP F2.4 macro camera; Nightography; Best Face
Battery and charging
Battery
Battery	3,100 mAh	5,000 mAh (better)
Video playback (maker's claim)
Video playback (maker's claim)	Up to 14 hours	Up to 29 hours
Wired charging
Wired charging	–	Up to 45 W
Wireless charging
Wireless charging	None	None
Battery life detail
Battery life detail	3,100 mAh typical; 15 W fast charging; up to 14 hours video playback	Rated (minimum) capacity 4,905 mAh; up to two days of use (Samsung, independently assessed); at least 1,200 charge cycles; EU energy class A
Wired charging
Wired charging	–	Super Fast Charging 2.0, up to 60% in around 30 minutes; UK spec lists 10–45 W charger power
Design
Type
Type	Standard	Standard
Weight
Weight	140 g (better)	179 g
Thickness
Thickness	7.9 mm	6.9 mm (better)
Height × width
Height × width	144.4 × 69.2 mm	161.5 × 76.8 mm
Water and dust resistance
Water and dust resistance	–	IP68
Materials
Materials	3D Glasstic back	Corning Gorilla Glass Victus+ back
Colours
Colours	Black, Blue, White and Coral in Europe	Awesome Navy, Awesome Grey, Awesome Icyblue, Awesome Lilac
Water resistance detail
Water resistance detail	–	IP68, tested for submersion in up to 1.5 m of fresh water for up to 30 minutes; not recommended for beach or pool use
Biometrics
Biometrics	Rear fingerprint reader and face recognition	Fingerprint sensor
Sensors
Sensors	–	Accelerometer, fingerprint sensor, gyro sensor, geomagnetic sensor, light sensor, proximity sensor
Speakers
Speakers	3.5 mm headphone socket; mono speaker	Stereo speakers
Software
Operating system
Operating system	Android	Android
Software at launch
Software at launch	Android 9 Pie with One UI	One UI 8.5 (Android 16)
Software updates
Software updates	–	Up to six generations of OS upgrades and six years of security updates; security updates until 31 March 2032 (UK)
AI features
AI features	–	Awesome Intelligence, including AI Select, Object Eraser, Best Face and Voice Transcription; Circle to Search with Google; Gemini
In the box
In the box	–	Phone, USB-C to USB-C cable, ejection pin, quick start guide
Safety features
Safety features	Samsung Knox	–
Connectivity
Satellite messaging
Satellite messaging	–	Yes
Mobile network
Mobile network	4G LTE, 3G WCDMA and 2G GSM	5G Sub6 (FDD, TDD); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSM
SIM
SIM	Dual nano-SIM plus dedicated microSD slot on the BTU configuration	Two nano-SIMs, nano-SIM and eSIM, or dual eSIM
Wi-Fi
Wi-Fi	Wi-Fi 5 (802.11a/b/g/n/ac), 2.4 and 5 GHz	Wi-Fi 6E (802.11a/b/g/n/ac/ax), 2.4, 5 and 6 GHz, HE80, MIMO, 1024-QAM
Bluetooth
Bluetooth	Bluetooth 5.0	Bluetooth 6.0
Satellite features
Satellite features	–	Works with O2 Satellite in the UK (texts, supported apps, maps and location sharing where O2 has no signal; not emergency calls)
NFC
NFC	Supported	–
USB
USB	USB-C 2.0	USB Type-C, USB 2.0
Positioning
Positioning	GPS, GLONASS, BeiDou and Galileo	GPS, Glonass, Beidou, Galileo, QZSS