Vivo Y55s vs Vivo Y91 3gb Ram

Key Specs

Battery
Battery	2730 mAh	4030 mAh
Display
Display	5.2 inches (13.21 cm)	6.22 inches (15.8 cm)
Front Camera
Front Camera	5 MP	8 MP
Processor
Processor	Qualcomm Snapdragon 425 MSM8917	Qualcomm Snapdragon 439
RAM
RAM	3 GB	3 GB
Rear Camera
Rear Camera	13 MP	13 MP + 2 MP

Battery

Capacity
Capacity	2730 mAh	4030 mAh
Removable
Removable	No	No
Type
Type	Li-ion	Li-ion
USB Type-C
USB Type-C	No	No

Design

Build Material
Build Material	Case: Metal Back: Metal	Back: Plastic
Colours
Colours	Crown Gold,Space Gray	Ocean Blue, Starry Black
Height
Height	147.9 mm	155.1 mm
Thickness
Thickness	7.5 mm	8.2 mm
Weight
Weight	142 grams	163.5 grams
Width
Width	72.9 mm	75 mm

Display

Aspect Ratio
Aspect Ratio	-	19:9
Bezel-less display
Bezel-less display	-	Yes with waterdrop notch
Display Type
Display Type	TFT	IPS LCD
Pixel Density
Pixel Density	282 ppi	270 ppi
Resolution
Resolution	720x1280 px (HD)	720x1520 px (HD+)
Screen Protection
Screen Protection	Corning Gorilla Glass v3	-
Screen Size
Screen Size	5.2 inches (13.21 cm)	6.22 inches (15.8 cm)
Screen to Body Ratio (calculated)
Screen to Body Ratio (calculated)	68.98 %	82.6 %
Screen to Body Ratio (claimed by the brand)
Screen to Body Ratio (claimed by the brand)	-	88.6 %
Touch Screen
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Camera Setup
Camera Setup	-	Single
Flash
Flash	Yes, Screen flash	Yes, Screen flash
Resolution
Resolution	5 MP f/2.2, Primary Camera	8 MP f/1.8, Primary Camera

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General

Brand
Brand	vivo	vivo
Custom UI
Custom UI	Funtouch OS	Funtouch OS
Launch Date
Launch Date	February 26, 2017 (Official)	May 16, 2019 (Official)
Operating System
Operating System	Android v6.0 (Marshmallow)	Android v8.1 (Oreo)

Main Camera

Autofocus
Autofocus	Yes	Yes, Phase Detection autofocus
Camera Features
Camera Features	Digital Zoom Auto Flash Face detection Touch to focus	Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
Camera Setup	Single	Dual
Flash
Flash	Yes, LED Flash	Yes, LED Flash
Image Resolution
Image Resolution	4128 x 3096 Pixels	4128 x 3096 Pixels
Resolution
Resolution	13 MP f/2.2, Primary Camera	13 MP f/2.2, Primary Camera 2 MP f/2.4, Depth Camera
Sensor
Sensor	-	CMOS image sensor
Settings
Settings	Exposure compensation	Exposure compensation, ISO control
Shooting Modes
Shooting Modes	Continuous Shooting High Dynamic Range mode (HDR)	Continuous Shooting High Dynamic Range mode (HDR)
Video Recording
Video Recording	-	1920x1080 @ 30 fps

Multimedia

Audio Jack
Audio Jack	3.5 mm	3.5 mm
FM Radio
FM Radio	Yes	Yes
Loudspeaker
Loudspeaker	Yes	Yes

Network & Connectivity

Bluetooth
Bluetooth	Yes, v4.2	Yes, v5.0
GPS
GPS	Yes with A-GPS, Glonass	Yes with A-GPS, Glonass
NFC
NFC	No	-
Network Support
Network Support	5G Not Supported in India, 4G Supported in India, 3G, 2G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
SAR Value	Head: 1.08 W/kg, Body: 0.724 W/kg	Head: 1.283 W/kg, Body: 0.609 W/kg
SIM 1
SIM 1	4G Bands: TD-LTE 2300(band 40) FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5) 3G Bands: UMTS 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM 2
SIM 2	4G Bands: TD-LTE 2300(band 40) FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5) 3G Bands: UMTS 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM Size
SIM Size	SIM1: Micro, SIM2: Nano	SIM1: Nano, SIM2: Nano
SIM Slot(s)
SIM Slot(s)	Dual SIM, GSM+GSM	Dual SIM, GSM+GSM
USB Connectivity
USB Connectivity	Mass storage device, USB charging, microUSB 2.0	Mass storage device, USB charging, microUSB 2.0
VoLTE
VoLTE	Yes	Yes
Wi-Fi
Wi-Fi	Yes, Wi-Fi 4 (802.11 b/g/n)	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Features
Wi-Fi Features	Mobile Hotspot	Mobile Hotspot

Performance

Architecture
Architecture	-	64 bit
CPU
CPU	Quad core, 1.4 GHz, Cortex A53	Octa core (1.95 GHz, Quad core, Cortex A53 + 1.45 GHz, Quad core, Cortex A53)
Chipset
Chipset	Qualcomm Snapdragon 425 MSM8917	Qualcomm Snapdragon 439
Fabrication
Fabrication	-	12 nm
Graphics
Graphics	Adreno 308	Adreno 505
RAM type
RAM Type	-	LPDDR3

Sensors

Fingerprint Sensor
Fingerprint Sensor	No	Yes
Fingerprint Sensor Position
Fingerprint Sensor Position	-	Rear
Other Sensors
Other Sensors	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Storage

Expandable Memory
Expandable Memory	Yes, Up to 256 GB	Yes, Up to 256 GB
Internal Memory
Internal Memory	16 GB	32 GB
Storage Type
Storage Type	-	eMMC 5.1
USB OTG
USB OTG	Yes	Yes