Phone Comparison - Oppo A57 vs Oppo A77 vs Samsung Galaxy J7 (2017)

general General Info

Manufacturer Oppo Oppo Samsung
Announced November 2016 July 2017 June 2017
Status Available - January 2017 Available - July 2017 Available - July 2017
Price Rs. 14,990 ($240.00) [Similarly Priced] - Rs. 24,500 ($330.00) [Similarly Priced]
Colors Gold, Rose Gold Gold, Rose Gold Gold, Black, Pink, Blue
Form Factor Candybar Candybar Candybar
Dimension 149.1 x 72.9 x 7.65 mm
(5.87 x 2.87 x 0.3 in)
153.3 x 75.9 x 7.4 mm
(6.04 x 2.99 x 0.29 in)
152.4 x 74.7 x 7.9 mm
(6 x 2.94 x 0.31 in)
Weight 147 g (5.19 oz) 148 g (5.22 oz) -
SIM Type Dual-SIM Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA2000 1xEV-DO - A59m
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 - J710F, J710H
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - J710M
4G Network LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) LTE LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 40(2300) - J710F
Messaging SMS, MMS, Push Mail, EMail SMS, MMS, Push Mail, EMail SMS, MMS, EMail, IM
Build Features - Fingerprint Sensor
- Metal Build
- 2.5D Curved Glass
- Fingerprint Sensor
-
Notification LED Yes Yes -

hardware Hardware and OS

OS Android OS, v6.0 (Marshmallow) Android OS, v7.0 (Nougat) Android OS, v7.1 (Nougat)
User Interface ColorOS 3.0 - -
Processor Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435 Octa-core 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625 Octa-core 1.6 GHz Cortex-A53, Exynos 7870
GPU Adreno 505 Adreno 506 Mali-T830 MP2
RAM 3 GB 4 GB 3 GB
Internal Memory 32 GB 64 GB 16 GB
External Memory microSD, up to 128 GB (uses SIM 2 slot) microSD, up to 256 GB (uses SIM 2 slot) microSD, up to 256 GB

display Display

Type IPS LCD capacitive touchscreen IPS LCD Capacitive Touchscreen Super AMOLED capacitive touchscreen, 2.5D Gorilla Glass
Colors 16M colors 16M colors 16M colors
Size 5.2 inches 5.5 inches 5.5 inches
Resolution 720 x 1280 pixels (282 ppi) 1080 x 1920 pixels (401 ppi) 1080 x 1920 pixels (401 ppi)
Screen-to-Body Ratio 68.79% 71.50% 73.08%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio FM Radio FM radio, RDS, recording
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 13 MP 13 MP 13 MP
Flash LED Flash LED Flash LED Flash
Features Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama Autofocus, f/1.7, 28mm, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR
Video 1080p@30fps 1080p@30fps 1080p@30fps
Front Camera 16 MP [Similar] 16 MP, f/2.0 [Similar] 13 MP, f/1.9 [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA, LTE, VoLTE HSPA, LTE, VoLTE HSPA, LTE Cat4 150/50 Mbps
Bluetooth v4.1, A2DP 4.2, A2DP v4.1, A2DP
Wi-Fi Wi-Fi 802.11 a/b/g/n, hotspot Wi-Fi 802.11 b/g/n, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
USB microUSB v2.0, USB Host microUSB 2.0 microUSB v2.0
GPS Yes, with A-GPS Yes, with A-GPS Yes, with A-GPS, GLONASS
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 32 GB, 3 GB RAM 64 GB, 4 GB RAM 16 GB, 3 GB RAM
Expandable Storage microSD, up to 128 GB (uses SIM 2 slot) microSD, up to 256 GB (uses SIM 2 slot) microSD, up to 256 GB
USB OTG Supported Not Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Light Sensor light sensor present light sensor present light sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor present
NFC NFC not supported NFC not supported NFC supported

battery Battery

Type Non-removable Li-Ion Battery Non-removable Li-Ion Battery Non-removable Li-Ion Battery
Capacity 2900 mAh 3200 mAh 3600 mAh
Stand by - - -
Talk Time - - -