Vivo S1 (V1831A) vs Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)

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Side by side comparison between Vivo S1 vs Samsung Galaxy A9 (2018) phones, differences, pros, cons and full specifications. What's the better?

7/13/2019 12:22 PM, updated: 8/6/2020 7:15 AM

Compare Samsung Galaxy A9 (2018) X Vivo S1 (V1831A) 07Points

Specifications Compare Models Pictures

6.33"
IPS

1080x2340

12
MP

25mp

6GB
RAM

Octa-core

3940
mAh

(Non removable)

12Points Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/6GB) Compare Vivo S1 X

Specifications Compare Models Pictures

6.3"
AMOLED

1080x2220

24
MP

24mp

6GB
RAM

Octa-core

3800
mAh

(Non removable)

What's the better phone? Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

7 Advantages Vivo S1 (V1831A)	vs	12 Advantages Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
+2.1GHz 64bit Octa-core7% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core
+1080x2340 pixels5% Higher resolution screen	vs	1080x2220 pixels
+407 PPI4% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	392 PPI
+6.33"1% Larger screen	vs	6.3"
+(front) 25MP4% Higher resolution secondary camera to take pictures and selfies	vs	(front) 24MP
+Face unlock 2DAdvantage Sensors help you use the device	vs	Not supported
+3940 mAh4% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3800 mAh
Until 256GB microSD, microSDXC	vs	+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards
190 grams (6.65 ounces)	vs	+183 grams (6.41 ounces)4% Lighter
8.54 millimeters (0.34 inches)	vs	+7.8 millimeters (0.31 inches)9% Thinner
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
(triple camera) 12MP + 8MP + 5MP	vs	+(quad camera) 24MP + 10MP + 8MP + 5MP88% Higher resolution main camera
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
f/1.8 (aperture)	vs	+f/1.7 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(4G LTE-A) 300 Mbps	vs	+(4G LTE-A) 450 Mbps50% Faster for surfing the internet and download files
Not supported	vs	+ANT+Advantage Sensors help you use the device
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
MicroUSB 2.0, USB OTG On-The-Go	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.
Not supported	vs	+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys

34 Common items in both devices

6GB LPDDR4X

128GB (108GB available) / 128GB (110GB available)

eMMC 5.1

16 million

LED flash

PDAF: phase detection autofocus

EIS: Digital stabilization

+27 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Change model		Choose the model
Model	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Other model names	BBK vivo S1 (China) V1831	Galaxy A9 SM-A920F/Dual-Sim (6GB RAM), SM-A920FZBJZTO
Country or region available	China	(Europe), Brazil, India, Malaysia
Brand	Vivo	Samsung
Release date	4/1/2019	10/11/2018
Depth	8.54 millimeters (0.34 inches)	7.8 millimeters (0.31 inches)
Size (width x height)	75.93 x 161.97 millimeters (2.99 x 6.38 in)	77 x 162.5 millimeters (3.03 x 6.4 in)
Weight	190 grams (6.65 ounces)	183 grams (6.41 ounces)
Build, materials	feature not registered	Aluminum body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Display type	TFT IPS LCD	Super AMOLED
Screen size	6.33" inches	6.3" inches
Screen-to-body ratio	~80% (screen-to-body ratio)	~80.5% (screen-to-body ratio)
Display resolution	1080x2340 pixels	1080x2220 pixels (18.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	407 PPI	392 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 5
Refresh rate	feature not registered	60Hz
Display features	feature not registered	Not supported
🤖 Operating System
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
System version	Android 9.0 Pie	Android 8.0 Oreo
Firmware update	feature not registered	Android 9.0 Pie
User Interface	feature not registered	feature not registered
⚙️ Processor
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Chipset	64bit: MediaTek MT6771WT Helio P70 (12nm)	64bit: Qualcomm Snapdragon 660 SDM660 (14nm)
CPU	Octa-core, 2 processors: 4x 2.1GHz ARM Cortex-A73 (Quad-core) 4x 2GHz ARM Cortex-A53 (Quad-core)	Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core)
GPU graphical controller	ARM Mali-G72 MP3 900Mhz	Qualcomm Adreno 512 650Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
RAM memory	6GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (108GB available) eMMC 5.1	128GB (110GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	300/50 Mbps	450/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	CDMA 800, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat7 (Bands 1, 3, 5, 8) TD-LTE (Bands 34, 38, 39, 40, 41) VoLTE	LTE Cat9 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Back camera (main camera)	(triple camera) 12 megapixels 8MP ultrawide f/2.2 5MP depth f/2.4	(quad camera) 24 megapixels 10MP telephoto f/2.452mm1/3.9"1.0µmAF2x-optical-zoom 8MP ultrawide f/2.412mm1/4.0"1.12µm 5MP depth f/2.2
Main camera resolution	4000x3000 pixels	5656x4240 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.7 (aperture)
Focal length	13mm (lens)	27mm (lens)
Sensor size	feature not registered	1/2.8" inches
Pixel size	feature not registered	0.9µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Front camera (secondary)	25 megapixels	24 megapixels
Front camera resolution	5760x4320 pixels	5656x4240 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	27mm (lens)
Sensor size	feature not registered	1/2.8" inches
Pixel size	feature not registered	0.9µm pixel
🔉 Sound and multimedia
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
USB	MicroUSB 2.0, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor ANT+ Compass Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3940 mAh	3800 mAh
Charger, watts	18W Wired fast charging	18W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Ice black, Blue, Pink • 19.5:9 display ratio • Always On Display • FunTouch OS 9 • Motorized pop-up front camera	• Colors: Caviar Black, Lemonade Blue, Bubblegum Pink • Samsung Pay • Dolby Atmos
☢️ Radiation rate
	Vivo S1 (V1831A)	Galaxy A9 2018 (SM-A920F/DS 128GB/6GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.27W/kg (head), 0.84W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered