Phone Comparison - Vivo Y66 vs Oppo A57 vs vivo Y55s

	Vivo Y66 ✖	Oppo A57 ✖	vivo Y55s ✖

General Info
	Vivo Y66 ✖	Oppo A57 ✖	vivo Y55s ✖


Manufacturer	vivo	Oppo	vivo
Announced	December 2016	November 2016	February 2017
Status	Available - December 2016	Available - January 2017	Coming Soon - February 2017
Price	Rs. 14,990 ($216.00) [Similarly Priced]	Rs. 14,990 ($240.00) [Similarly Priced]	-
Colors	Gold	Gold, Rose Gold	Crown Gold, Space Gray
Form Factor	Candybar	Candybar	Candybar
Dimension	153.56 x 75.79 x 7.49 mm (6.05 x 2.98 x 0.29 in)	149.1 x 72.9 x 7.65 mm (5.87 x 2.87 x 0.3 in)	-
Weight	157 g (5.54 oz)	147 g (5.19 oz)	-
SIM Type	Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card)	Dual-SIM	Dual SIM
2G Network	GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO - A59m	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network	HSDPA 850 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 900 / 2100
4G Network	LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)	LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)	LTE band 3(1800), 5(850), 40(2300)
Messaging	SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail	SMS, MMS, EMail, IM
Build Features	- Metal Body - 2.5D Curved Glass	- Fingerprint Sensor - Metal Build - 2.5D Curved Glass	-
Notification LED	Yes	Yes	No
Hardware and OS
OS	Android OS, v6.0.1 (Marshmallow)	Android OS, v6.0 (Marshmallow)	Android OS, v6.0 (Marshmallow)
User Interface	FunTouch OS 3.0	ColorOS 3.0	-
Processor	Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8937 Snapdragon 430	Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435	Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425
GPU	Adreno 505	Adreno 505	Adreno 306
RAM	3 GB	3 GB	3 GB
Internal Memory	32 GB	32 GB	16 GB
External Memory	microSD, up to 128 GB	microSD, up to 128 GB (uses SIM 2 slot)	microSD, up to 256 GB (dedicated slot)

Display
Type	IPS LCD capacitive touchscreen	IPS LCD capacitive touchscreen	IPS LCD Capacitive Touchscreen
Colors	16M colors	16M colors	16M colors
Size	5.5 inches	5.2 inches	5.2 inches
Resolution	720 x 1280 pixels (267 ppi)	720 x 1280 pixels (282 ppi)	720 x 1280 pixels (282 ppi)
Screen-to-Body Ratio	71.66%	68.79%	-
Multi-Touch
Multimedia
3.5mm Jack
Radio	FM radio	FM radio	FM radio
Games	Yes + Downloadable	Yes + Downloadable	Yes + Downloadable
Loud Speaker
Camera
Rear Camera	13 MP, 4160 x 3120 pixels	13 MP	13 MP
Flash	LED Flash	LED Flash	LED Flash
Features	AutoFocus, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama	Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama	Autofocus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama
Video	1080p@30fps	1080p@30fps	1080p@30fps
Front Camera	5 MP [Similar]	16 MP [Similar]	5 MP [Similar]
Connectivity and Data Rate
GPRS	Yes	Yes	Yes
Edge	Yes	Yes	Yes
3G	HSPA, LTE, EV-DO Rev.A 3.1 Mbps, VoLTE	HSPA, LTE, VoLTE	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE
Bluetooth	v4.1, A2DP	v4.1, A2DP	v4.0, A2DP
Wi-Fi	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n, hotspot	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
USB	microUSB v2.0	microUSB v2.0, USB Host	microUSB v2.0
GPS	Yes, with A-GPS, GLONASS, BDS	Yes, with A-GPS	Yes, with A-GPS, BDS
Browser	HTML5	HTML5	HTML5

User Memory
Internal	32 GB, 3 GB RAM	32 GB, 3 GB RAM	16 GB, 3 GB RAM
Expandable Storage	microSD, up to 128 GB	microSD, up to 128 GB (uses SIM 2 slot)	microSD, up to 256 GB (dedicated slot)
USB OTG	Supported	Supported	Not Supported
Sensors
Fingerprint
Proximity Sensor
Accelerometer Sensor
Light Sensor
Magnetic-Field Sensor (Compass)
NFC
Battery
Type	Non-removable Li-Ion Battery	Non-removable Li-Ion Battery	Non-removable Li-Ion Battery
Capacity	3000 mAh	2900 mAh	2730 mAh
Stand by	-	-	-
Talk Time	-	-	-

Phone Comparison - Vivo Y66 vs Oppo A57 vs vivo Y55s

General Info

Hardware and OS

Display

Multimedia

Camera

Connectivity and Data Rate

User Memory

Sensors

Battery

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