Samsung Galaxy M40 vs Samsung Galaxy S9

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 2100

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500)

LTE
HSDPA speed

42 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE Cat12, 603 Mbps download, 102 Mbps upload

-
LTE-A speed

-

LTE-A, (6CA) Cat18, 1200 Mbps download, 200 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

Front/back glass (Gorilla Glass 5), aluminum frame
SIM

Hybrid Dual SIM (Nano-SIM, dual stand-by)

Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
Height

155.3 mm

147.7 mm
Width

73.9 mm

68.7 mm
Thickness

7.9 mm

8.5 mm
Weight

168 g

163 g
Payment

-

Samsung Pay(Visa, Mastercard certified)
Waterproof

-

IP68, 1.5m and 30 minutes
Dust proof

-

Yes, IP68
Colors

Black, Blue

Coral Blue, Lilac Purple, Midnight Black, Titanium Gray

Hardware
CPU

Octa-core

Octa-core
CPU

Quad-core 2 GHz Kryo 460

Quad-core 2.7 GHz Mongoose M3
CPU(second)

Hexa-core 1.7 GHz Kryo 460

quad-core 1.8 GHz Cortex-A55
Chipset

Qualcomm Snapdragon 675

Exynos 9810 Octa / Qualcomm SDM845 Snapdragon 845
GPU

Adreno 612

Mali-G72 MP18 / Adreno 630
Memory RAM

6 GB

4 GB
Internal storage

128 GB

64, 128, 256 GB
Memory card

microSD, microSDHC, microSDXC

microSD(uses second SIM slot)
Memory card max

1 TB

400 GB

Main camera
Camera type

Triple

-
Camera type

-

Photo / Video
Main camera

32 MP, f/1.7 , 0.8 µm

12 MP, f/1.5-2.4 , 1.4 µm, 26 mm, 1/2.5"
8 MP, f/2.2 , 12 mm, 1.12 µm
5 MP, f/2.2
Primary camera resolution

6528 x 4896 pixels

4032 x 3024 pixels
Primary camera video

2160p@30fps, 1080p@30fps

2160p@60fps, 1080p@240fps, 720p@960fps
Primary camera Autofocus

-

dual pixel phase detection autofocus
Primary camera flash

LED flash

LED flash
Primary camera optical image stabilization

-

optical image stabilization
Primary camera video dual video

-

dual-video record
Primary camera video hdr

-

HDR
Camera features

Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode

Auto HDR, Geo-tagging, face/smile detection, panorama, simultaneous 4K video and 9MP image recording, touch focus

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C reversible connector

Type-C 1.0 reversible connector
USB On-The-Go

Yes

-
Bluetooth

v5.0

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth AVRCP

Yes

-
bluetooth HFP

Yes

-
bluetooth HID

Yes

-
bluetooth OPP

Yes

-
bluetooth PAN

Yes

-
bluetooth LE

-

Yes
bluetooth DIP

Yes

-
bluetooth MAP

Yes

-
bluetooth PBAP

PBAP/PAB

-
bluetooth HOGP

Yes

-
bluetooth HSP

Yes

-
Bluetooth AptX

-

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
Beidou

Yes

-
BDS

-

Yes

Features
Messaging SMS

-

SMS(threaded view)
Messaging MMS

-

MMS
Messaging Email

-

Email
Messaging IM

-

IM
Messaging Push Mail

-

Push Mail
Sensors

Accelerometer, compass, gyroscope, hall, proximity, light, fingerprint

Iris scanner, SpO2, accelerometer, barometer, compass, fingerprint (rear-mounted), gyro, heart rate, proximity