Oppo R9 vs Oppo A57 vs Oppo R11

General Info

Manufacturer
Oppo	Oppo	Oppo
Announced
March 2016	November 2016	June 2017
Status
Available - April 2016	Available - January 2017	Available - June 2017
Price
Rs. 29,000 ($426.47) [Similarly Priced]	Rs. 14,990 ($240.00) [Similarly Priced]	Rs. 31,500 ($485.00) [Similarly Priced]
Colors
Gold	Gold, Rose Gold	Gold
Form Factor
Candybar	Candybar	Candybar
Dimension
151.8 x 74.3 x 6.6 mm (5.98 x 2.93 x 0.26 in)	149.1 x 72.9 x 7.65 mm (5.87 x 2.87 x 0.3 in)	-
Weight
145 g (5.11 oz)	147 g (5.19 oz)	-
SIM Type
-	Dual-SIM	Dual SIM (Nano-SIM, dual stand-by)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO & TD-SCDMA	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO - A59m	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO & TD-SCDMA
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network
LTE band 1(2100), 3(1800), 5(850), 38(2600), 39(1900), 40(2300), 41(2500)	LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)	LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
Messaging
SMS, MMS, Push Mail, EMail	SMS, MMS, Push Mail, EMail	SMS, MMS, Push Mail, EMail
Build Features
-	- Fingerprint Sensor - Metal Build - 2.5D Curved Glass	- Fingerprint Sensor
Notification LED
-	Yes	Yes

OS
Android OS, v5.1 (Lollipop)	Android OS, v6.0 (Marshmallow)	Android OS, v7.1.1 (Nougat)
User Interface
-	ColorOS 3.0	-
Processor
Octa-core 2.0 GHz Cortex-A53, Mediatek MT6755 Helio P10	Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435	Octa-core 2.2 GHz Cortex-A53, Qualcomm MSM8976 PLus Snapdragon 660
GPU
Mali-T860MP2	Adreno 505	Adreno 512
RAM
4 GB	3 GB	4 GB
Internal Memory
64 GB	32 GB	64 GB
External Memory
microSD, up to 128 GB (uses SIM 2 slot)	microSD, up to 128 GB (uses SIM 2 slot)	microSD, up to 256 GB (uses SIM 2 slot)

Type
Capacitive Touchscreen, Corning Gorilla Glass 4	IPS LCD capacitive touchscreen	Capacitive Touchscreen
Colors
16M colors	16M colors	16M colors
Size
5.5 inches	5.2 inches	5.5 inches
Resolution
1080 x 1920 pixels (401 ppi)	720 x 1280 pixels (282 ppi)	1080 x 1920 pixels (401 ppi)
Screen-to-Body Ratio
73.76%	68.79%	-
Multi-Touch

Rear Camera
13 MP, 4128 x 3096 pixels	13 MP	Dual 20 MP + 16 MP
Flash
LED Flash	LED Flash	LED Flash
Features
Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR	Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama	Phase Detection Autofocus, 2X Optical Zoom, Portrait Mode, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama
Video
1080p@30fps	1080p@30fps	1080p@30fps
Front Camera
16 MP, f/2.0	16 MP	20 MP, 1080p

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA, LTE	HSPA, LTE, VoLTE	HSPA, LTE, VoLTE
Bluetooth
v4.0	v4.1, A2DP	v4.2, A2DP, LE, EDR
Wi-Fi
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
USB
microUSB v2.0, USB Host	microUSB v2.0, USB Host	Type-C 1.0 Reversible Connector, Fast Charging
GPS
Yes, with A-GPS	Yes, with A-GPS	Yes, with A-GPS
Browser
HTML5	HTML5	HTML5