Product
Samsung Galaxy A40
Samsung Galaxy A40
Samsung Galaxy M40
Samsung Galaxy M40
Battery
Charging 15W wired 15W wired
Type Li-Po 3100 mAh, non-removable Li-Po 3500 mAh, non-removable
Body
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front (Gorilla Glass 3), plastic back, plastic frame
Dimensions 144.4 x 69.2 x 7.9 mm (5.69 x 2.72 x 0.31 in) 155.3 x 73.9 x 7.9 mm (6.11 x 2.91 x 0.31 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 140 g (4.94 oz) 168 g (5.93 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
NFC Yes Yes
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS
Radio FM radio FM radio
USB USB Type-C 2.0 USB Type-C 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 3
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~437 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
Size 5.9 inches, 85.5 cm2 (~85.5% screen-to-body ratio) 6.3 inches, 97.4 cm2 (~84.9% screen-to-body ratio)
Type Super AMOLED PLS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
  ANT+ -
Launch
Announced 2019, March 19 2019, June
Status Available. Released 2019, April Available. Released 2019, June
Main Camera
Dual 16 MP, f/1.7, 26mm (wide), PDAF 5 MP, f/2.2, 13mm (ultrawide) -
Features LED flash, panorama, HDR LED flash, panorama, HDR
Triple - 32 MP, f/1.7, 26mm (wide), 1/2.8", 0.8µm, PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm, PDAF 5 MP, f/2.2, (depth)
Video 1080p@30fps 4K@30fps, 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 64GB 4GB RAM, 128GB 4GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  eMMC 5.1 eMMC 5.1
Misc
Colors Black, White, Blue, Coral Seawater Blue, Midnight Blue, Cocktail Orange
Models SM-A405F, SM-A405FN, SM-A405FM, SM-A405S SM-M405F, SM-M405FN, SM-M405G
SAR - 0.20 W/kg (head)    
SAR EU 0.49 W/kg (head)     1.34 W/kg (body)     0.27 W/kg (head)     1.17 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 5, 7, 8, 20, 38, 40, 41 1, 3, 5, 8, 40, 41
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat12 600/150 Mbps HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 400/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Our Tests
Audio quality Noise -91.0dB / Crosstalk -85.9dB -
Battery (old) Endurance rating 73h -
Camera Photo / Video -
Display 548 nits max brightness (measured) -
Loudspeaker Voice 66dB / Noise 68dB / Ring 73dB -
Performance AnTuTu: 106388 (v7) GeekBench: 4112 (v4.4) GFXBench: 4.6fps (ES 3.1 onscreen) -
Platform
Chipset Exynos 7904 (14 nm) Qualcomm SDM675 Snapdragon 675 (11 nm)
CPU Octa-core (2x1.77 GHz Cortex-A73 & 6x1.59 GHz Cortex-A53) Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver)
GPU Mali-G71 MP2 Adreno 612
OS Android 9.0 (Pie), upgradable to Android 11 Android 9.0 (Pie), upgradable to Android 11, One UI 3.1
Selfie camera
Features - HDR
Single 25 MP, f/2.0, 25mm (wide), 1/2.8", 0.9µm 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes