Samsung Galaxy S9 vs Samsung Galaxy A70

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Main
Model
Price
Advantages

launch
Announced
Status
platform
OS
Chipset
CPU
GPU
camera
Rear
Front
Video
Features
display
Size
Resolution
Technology
Protection
Multitouch
battery
General
Charging
body
Dimensions
Weight
Build
SIM card
Miscellaneous
Colors
memory
Internal Storage & RAM
Card slot
comms
WLAN
Bluetooth
GPS
NFC
Radio
USB
features
Sensors
Messaging
Browser
sound
3.5mm jack
network
Technology
2G bands
3G bands
4G bands
Speed
GPRS
EDGE
Videos

8.00/10

Main
Model
Samsung Galaxy S9
Price
$492.77
Advantages
DISPLAY Resolution: 1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density)
BODY Dimensions: 147.7 x 68.7 x 8.5 mm (5.81 x 2.70 x 0.33 in)
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Main
Model
Samsung Galaxy A70
Price
Advantages
DISPLAY Size: 6.7 inches, 108.4 cm2
BATTERY General: Non-removable Li-Po 4500 mAh battery
MEMORY Internal Storage & RAM: 128 GB, 6/8 GB RAM
MEMORY Card slot: microSD, up to 512 GB (dedicated slot)
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launch
Announced
2018, February
Status
Coming soon. Exp. release 2018, March
platform
OS
Android 8.0 (Oreo)
Chipset
Exynos 9810 Octa - EMEA Qualcomm MSM8998 Snapdragon 845 - USA & China
CPU
Octa-core (4x2.8 GHz Mongoose M3 & 4x1.7 GHz Cortex-A55) - EMEA Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA & China
GPU
Mali-G72 MP18 - EMEA Adreno 630 - USA & China
camera
Rear
12 MP (f/1.5-2.4, 26mm, 1/2.5", 1.4 µm, Dual Pixel PDAF), phase detection autofocus, OIS, LED flash
Front
8 MP (f/1.7, 25mm, 1/3.6", 1.22 µm), autofocus, 1440p@30fps, dual video call, Auto HDR
Video
2160p@60fps, 1080p@240fps, 720p@960fps, HDR, dual-video rec.
Features
Geo-tagging, simultaneous 4K video and 9MP image recording, touch focus, face/smile detection, Auto HDR, panorama
display
Size
5.8 inches, 84.8 cm2
Resolution
1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density)
Technology
Super AMOLED capacitive touchscreen, 16M colors
Protection
Corning Gorilla Glass 5 - HDR10 compliant - 3D Touch (home button only) - Always-on display
Multitouch
Yes
battery
General
Non-removable Li-Ion 3000 mAh battery (11.55 Wh)
Charging
—
body
Dimensions
147.7 x 68.7 x 8.5 mm (5.81 x 2.70 x 0.33 in)
Weight
163 g (5.75 oz, 0.36 lb)
Build
Front/back glass (Gorilla Glass 5), aluminum frame
SIM card
Single SIM
Miscellaneous
Colors
Midnight Black, Coral Blue, Titanium Gray, Lilac Purple
memory
Internal Storage & RAM
64/128/256 GB, 4 GB RAM
Card slot
microSD, up to 400 GB (uses SIM 2 slot) - dual SIM model only
comms
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth
5.0, A2DP, LE, aptX
GPS
Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC
Yes
Radio
FM radio (USA & Canada only) - To be confirmed
USB
3.1, Type-C 1.0 reversible connector
features
Sensors
Iris scanner, fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2
Messaging
SMS(threaded view), MMS, Email, Push Mail, IM
Browser
HTML5 - Samsung DeX (desktop experience support) - Fast battery charging (Quick Charge 2.0) - Qi/PMA wireless charging (market dependent) - ANT+ support - Bixby natural language commands and dictation - MP4/DivX/XviD/H.265 player - MP3/WAV/eAAC+/FLAC player - Photo/video editor - Document editor
sound
3.5mm jack
Yes
network
Technology
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
LTE
Speed
HSPA 42.2/5.76 Mbps, LTE-A (6CA) Cat18 1200/200 Mbps
GPRS
Yes
EDGE
Yes
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launch
Announced
2019, March
Status
Coming soon. Exp. release 2019, April
platform
OS
Android 9.0 (Pie)
Chipset
Qualcomm SDM675 Snapdragon 675 (11 nm)
CPU
Octa-core (2x2.0 GHz & 6x1.7 GHz)
GPU
Adreno 612
camera
Rear
Triple 32 MP, f/1.7, 26mm (wide), 1/2.8", 0.8Âµm, PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12Âµm 5 MP, f/2.2, (depth)
Front
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8Âµm
Video
4K@30fps, 1080p@30/240fps
Features
LED flash, panorama, HDR
display
Size
6.7 inches, 108.4 cm2
Resolution
1080 x 2400 pixels (~393 ppi density)
Technology
Super AMOLED capacitive touchscreen, 16M colors
Protection
Corning Gorilla Glass 3
Multitouch
—
battery
General
Non-removable Li-Po 4500 mAh battery
Charging
Fast battery charging 25W
body
Dimensions
164.3 x 76.7 x 7.9 mm (6.47 x 3.02 x 0.31 in)
Weight
183 g (6.46 oz, 0.4 lb)
Build
—
SIM card
Single SIM
Miscellaneous
Colors
Coral, Blue, Black, White
memory
Internal Storage & RAM
128 GB, 6/8 GB RAM
Card slot
microSD, up to 512 GB (dedicated slot)
comms
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Bluetooth
5.0, A2DP, LE
GPS
Yes, with A-GPS, GLONASS, GALILEO, BDS
NFC
Yes (market dependent)
Radio
FM radio
USB
2.0, Type-C 1.0 reversible connector
features
Sensors
Fingerprint (under display), accelerometer, gyro, proximity, compass ANT+
Messaging
—
Browser
—
sound
3.5mm jack
Yes
network
Technology
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands
HSDPA 850 / 900 / 1900 / 2100
4G bands
LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)
Speed
HSPA, LTE-A
GPRS
Yes
EDGE
Yes
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Summary

The Galaxy S9 has 4K UHD (1440 x 2960 pixels) display resolution with 567 ppi pixel density which is more high than the Galaxy A70 4K UHD (1080 x 2400 pixels) display resolution with 392 ppi pixel density. It makes this phone a good choice for reading books. The Galaxy S9 device is easier to carry as it has more portable dimensions than the Galaxy A70: 147.7 x 68.7 x 8.5 mm versus 164.3 x 76.7 x 7.9 mm.

The Galaxy A70 model is produced with a memory card slot. It's a pleasant advantage: you can easily expand internal storage and transfer files. The Galaxy A70 has a better battery life as it is produced with 4500mah battery which is 1500mah bigger compared to the Galaxy S9 cell. That's mean this model can be used longer without charging.

The Samsung Galaxy A70 has 4 advantages and the Samsung Galaxy S9 only 2 so the Galaxy A70 is the best buy. Check the list of the best offers on Amazon.