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Samsung Galaxy A18 vs Samsung Galaxy A40

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

Better figure, where one is clearly better

SamsungGalaxy A18SamsungGalaxy A40
Overview
ReleasedSeptember 2026April 2019
Display
Screen size6.7″5.9″
Resolution2340 × 10802340 × 1080
Sharpness385 pixels per inch437 pixels per inch
PanelOLEDOLED
Refresh rate90 Hz–
Display typeSuper AMOLED, FHD+, 16 million colours; 6.7-inch full rectangle, 6.5-inch accounting for rounded cornersFull HD+ Super AMOLED Infinity-U Display
Screen protectionCorning Gorilla Glass 3 on the front–
Performance
ChipExynos 1610Exynos 7904
Memory4 GB4 GB
Storage128 GB64 GB
CPUOcta-core, 2.4 GHz and 2 GHzExynos 7904 octa-core at 1.8 GHz and 1.6 GHz; chip identified in Notebookcheck's exact-model review
Storage type–Dedicated microSD slot supports cards up to 512 GB
MemoryLPDDR5; RAM Plus uses internal storage as virtual memory, separate from physical RAM–
Cameras
Main camera50 MP16 MP
Ultra wide camera5 MP5 MP
Telephoto cameraNoneNone
Optical zoomNoneNone
Front camera13 MP25 MP
Main camera50 MP, F1.8, autofocus; Samsung UK's exact specification lists no OIS, conflicting with GSMArena's stabilisation description16 MP, F1.7, autofocus; no optical image stabilisation
Ultra wide camera5 MP, F2.25 MP, F2.2, 123° field of view
Front camera13 MP, F2.0; no autofocus or OIS25 MP, F2.0, fixed focus
ZoomDigital zoom up to 10×–
Video recordingFHD (1920 × 1080) at 30 fps; slow motion at 120 fps in HDFull HD 1920 × 1080 at 30 fps
Camera features2 MP F2.4 macro camera; rear flash–
Battery and charging
Battery5,000 mAh3,100 mAh
Video playback (maker's claim)–Up to 14 hours
Wired chargingUp to 25 W–
Wireless chargingNoneNone
Battery life detailTypical 5,000 mAh, non-removable; EU energy class A, minimum battery endurance 1,200 cycles3,100 mAh typical; 15 W fast charging; up to 14 hours video playback
Wired chargingUp to 25 W; Samsung France claims 50% charge in 30 minutes; charger sold separately–
Design
TypeStandardStandard
Weight196 g140 g
Thickness7.7 mm7.9 mm
Height × width164.4 × 77.9 mm144.4 × 69.2 mm
Materials–3D Glasstic back
Water and dust resistanceIP64–
ColoursBlack, Silver, Light Blue (UK)Black, Blue, White and Coral in Europe
Water resistance detailIP64, dust-tight and splash-resistant; maker test sprays 10 litres of fresh water per minute from all angles for five minutes; not recommended for beach or pool use–
BiometricsSide-button fingerprint recognition sensor (exact repair guide)Rear fingerprint reader and face recognition
SensorsAccelerometer, fingerprint sensor, gyro sensor, geomagnetic sensor, light sensor, virtual proximity sensing–
SpeakersNo stereo support (Samsung UK)3.5 mm headphone socket; mono speaker
Software
Operating systemAndroidAndroid
Software at launchAndroid 17 with One UI 9 (Samsung France)Android 9 Pie with One UI
Safety features–Samsung Knox
Software featuresKnox Vault, Quick Share and Smart Switch; no Samsung DeX support–
Release detailSamsung France confirmed already available on 15 September 2026; first retail day is not established, so month precision is retained. Swedish announcement says availability later in 2026.–
Software updatesUp to six generations of OS upgrades and six years of security updates; UK security support listed until 31 October 2032–
AI featuresCircle to Search with Google; Gemini (Samsung France)–
Connectivity
Mobile network4G LTE FDD/TDD; 3G WCDMA and 2G GSM; no 5G4G LTE, 3G WCDMA and 2G GSM
SIMDual nano-SIM; UK technical table specifies SIM 1 plus hybrid second SIM/microSD slot, despite its generic FAQ calling the microSD slot dedicatedDual nano-SIM plus dedicated microSD slot on the BTU configuration
Wi-FiWi-Fi 5 (802.11a/b/g/n/ac), 2.4 and 5 GHz, VHT80; Wi-Fi DirectWi-Fi 5 (802.11a/b/g/n/ac), 2.4 and 5 GHz
BluetoothBluetooth 5.3Bluetooth 5.0
NFCYes (UK model)Supported
USBUSB Type-C, USB 2.0; audio via USB-CUSB-C 2.0
PositioningGPS, Glonass, Beidou, Galileo, QZSSGPS, GLONASS, BeiDou and Galileo

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