Samsung Galaxy A8 Star vs vivo Y91 Specs Comparison

Design

Dimensions
6.39 x 3.03 x 0.30 inches 162.4 x 77 x 7.6 mm	6.11 x 2.96 x 0.33 inches 155.11 x 75.09 x 8.28 mm
Weight
6.74 oz / 191.0 g	5.77 oz / 163.5 g
Materials
Back: Glass Frame: Metal
Biometrics
2D Face unlock, Fingerprint (touch)	Fingerprint (touch)
Features
Notification light
Keys
Left: Volume control, Other; Right: Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, White	Black, Blue

Display

Size
6.3-inch, 80.77% screen-to-body	6.2-inch, 82.76% screen-to-body
Type
Super AMOLED	IPS LCD
Resolution
2220x1080px, 18.5:9 ratio, 392 PPI	1520x720px, 270 PPI
Colors
	16 777 216

Hardware

System chip
Snapdragon 660 SDM660 (14 nm)	MediaTek Helio P22 MT6762 (12 nm)
Processor
Octa-core 2200 MHz Kryo 260	Octa-core 2000 MHz ARM Cortex-A53
GPU
Adreno 512	IMG PowerVR GE8320
Memory
6GB (LPDDR4)/64GB	2GB/32GB
Storage expansion
microSDXC up to 400 GB	microSDXC up to 256 GB
OS
Android (9.0 Pie, 8.0 Oreo)	Android (8.1 Oreo)

Battery

Type
3700 mAh, Li - Ion	4030 mAh
Charging
Fast charging

Camera

Rear
Dual camera	Dual camera
Main camera
16 MP (PDAF) Aperture size: F1.7 Focal length: 26 mm Sensor size: 1/2.8" Pixel size: 1.12 μm	13 MP (PDAF) Aperture size: F2.2
Second camera
24 MP (PDAF, CMOS image sensor) Aperture size: F1.7 Focal Length: 26 mm Sensor size: 1/2.8" Pixel size: 0.9 μm	2 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p (30 fps) Hyperlapse, EIS, Video calling, Video sharing	1080p (30 fps) Time-lapse video, Video calling, Video sharing
Front
24 MP (Wide Angle) Video capture: 1080p	8 MP

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	b,g,n Hotspot, Wi-Fi Direct 802.11 b, g, n
USB
Type-C, USB 2.0	microUSB, USB 2.0
Sensors
Accelerometer, Gyroscope, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou	GPS, A-GPS, Glonass, BeiDou
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync	VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Dolby Atmos, Album art cover, Background playback	Album art cover, Background playback
Screen mirroring
Wireless screen share,MirrorLink	Wireless screen share
Radio
FM	FM
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28	1, 3, 5
4G (TDD) Bands
38, 40, 41	38, 40, 41
3G Bands
5, 8, 2, 1	5, 8, 1
Data Speed
LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM

Phone Features

Notifications
	Haptic feedback, Music ringtones, Vibration
Other features
	Voice dialing, Voice commands, Voice recording

Regulatory Approval

Measured SAR
Head: 0.43 W/kg Body: 1.73 W/kg	Head: 1.28 W/kg Body: 0.61 W/kg

Links

Full specifications
Samsung Galaxy A8 Star Specs	vivo Y91 Specs