OPPO R9 Plus vs. Samsung Galaxy A51

Phone Comparison, Reviews and Tests

In depth comparison and review of OPPO R9 Plus and Samsung Galaxy A51. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

OPPO R9 Plus vs. Samsung Galaxy A51 Comparison Chart
DESIGN AND DIMENSIONS OPPO R9 Plus Samsung Galaxy A51
Product Type Smartphone Smartphone
Manufacturer Model Number - SM-A515F/DSN
Form Factor Touch Touch
Height 163.1 mm 158.5 mm OPPO R9 Plus has greater height than Samsung Galaxy A51.
Width 80.8 mm 73.6 mm OPPO R9 Plus has greater width than Samsung Galaxy A51.
Depth 7.4 mm 7.9 mm OPPO R9 Plus is narrower than OPPO R9 Plus.
Weight 185 g 172 g Samsung Galaxy A51 is lighter than OPPO R9 Plus.
Body Colour Gold Silver | Prism crush black | Haze crush silver | Prism crush blue | Prism crush white
Waterproof (Water-resistant) - -
SAR Value - 0.369 W/kg (head), 1.59 W/kg (body), 2.93 W/kg (limb)
Connector Type Micro-USB - 5 pin Micro-USB Type B
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM (SIM1 and SIM2/MicroSD slots) Dual-SIM
SIM Card Configuration Details Nano SIM + nano SIM/microSD -
DISPLAY OPPO R9 Plus Samsung Galaxy A51
Display Type OLED display OLED display
Display Technology AMOLED Super AMOLED
Screen Size (Display Size) 6" 6.5" Samsung Galaxy A51 has larger screen size than OPPO R9 Plus.
Screen Resolution (Display Resolution) 1920 x 1080 pixels 2400 x 1080 pixels Samsung Galaxy A51 has better screen resolution than OPPO R9 Plus.
Display Format Full HD Full HD+
Pixel Density 367 ppi 408 ppi Samsung Galaxy A51 has better pixel density than OPPO R9 Plus.
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
Display Features - Edge-to-Edge screen, Infinity O display
Display Protection (Screen Protector) Corning Gorilla Glass 4 (scratch resistant glass) -
PROCESSOR OPPO R9 Plus Samsung Galaxy A51
Processor Type (CPU) Qualcomm Samsung Exynos 9611
Processor Number MSM8976 -
Clock Speed - 2.3 GHz
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture - Yes Samsung Galaxy A51 has 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 510 -
MEMORY OPPO R9 Plus Samsung Galaxy A51
RAM 4 GB 4 GB Both phones have the same RAM size.
Internal Memory Size (Storage Capacity) 64 GB 128 GB Samsung Galaxy A51 has more internal memory than OPPO R9 Plus.
User Memory - 107 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 256 GB microSDHC, microSDXC - up to 512 GB
CAMERA OPPO R9 Plus Samsung Galaxy A51
MAIN CAMERA
Number of Main Cameras 1 4
Sensor Resolution 16 Megapixel 48 Megapixel Samsung Galaxy A51 has better camera resolution than OPPO R9 Plus.
Lens Aperture F/2.0 F/2.0 Both phones have the same camera lens aperture.
Focus Adjustment Automatic Automatic
Digital Zoom - 8x
HDR Mode Auto HDR mode -
Camera Modes Panorama Slow motion mode, Live Focus mode
Face Recognition (Face ID) Face detection - OPPO R9 Plus has face detection.
Light Source LED light LED flash
Video Resolutions 1920 x 1080 (1080p), 3840 x 2160 (4K) Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps
Camera Features (Functions) - AR sticker, background blur, Scene Optimiser, Eye blink, Flaw detection, Stamp, Facial blur
SECOND CAMERA
Sensor Resolution (2nd Camera) - 12 Megapixel
Lens Type (2nd Camera) - Ultra wide-angle lens
Lens Aperture (2nd Camera) - F/2.2
Field of View (2nd Camera) - 123 degree(s)
THIRD CAMERA
Sensor Resolution (3rd Camera) - 5 Megapixel
Lens Aperture (3rd Camera) - F/2.4
Camera Functions (3rd Camera) - Macro camera
FOURTH CAMERA
Sensor Resolution (4th Camera) - 5 Megapixel
Lens Type (4th Camera) - Telephoto lens
Lens Aperture (4th Camera) - F/2.2
Camera Functions (4th Camera) - Depth camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 16 Megapixel 32 Megapixel Samsung Galaxy A51 has better front camera resolution than OPPO R9 Plus.
Lens Aperture (Front) F/2.0 F/2.2 OPPO R9 Plus has better front lens aperture than OPPO R9 Plus.
Focus Adjustment - Focus free
BATTERY AND CHARGING OPPO R9 Plus Samsung Galaxy A51
Battery Capacity (Battery Size) 4120 mAh 4000 mAh OPPO R9 Plus has larger battery capacity than Samsung Galaxy A51.
Talk Time - 1920 minutes
Run Time Details - Active online usage (LTE): up to 15 hrs
Active online usage (Wi-Fi): up to 16 hrs
Playback (video): up to 20 hrs
Playback (audio): up to 87 hrs
Talk (4G): up to 1920 min
Battery Technology Lithium polymer Lithium Ion
CELLULAR OPPO R9 Plus Samsung Galaxy A51
Technology CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System ColorOS 3.0 (based on Android 5.1) Android 10
User Interface - One UI
Intelligent Assistant - Bixby
Navigation GPS, A-GPS GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS OPPO R9 Plus Samsung Galaxy A51
Data Transmission GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, LTE GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band - Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency - 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 3, Band 5, Band 38, Band 39, Band 40, Band 41 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 20, Band 26, Band 28, Band 38, Band 40, Band 41, Band 66
4G LTE Frequency FDD 2100, FDD 1800+, FDD 850, TDD 2600, TDD 1900, TDD 2300, TDD 2500 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac, ANT+
Bluetooth Bluetooth 4.1 Bluetooth 5.0 LE
Bluetooth Profiles - HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, SAP, PBAP, MAP, HOGP
NFC - Yes Samsung Galaxy A51 has NFC reader for mobile payments.
Messaging Services SMS, MMS SMS, MMS
MEDIA OPPO R9 Plus Samsung Galaxy A51
Supported Digital Audio Standards WAV, MP3, FLAC, eAAC+ WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID
Supported Digital Video Standards MPEG-4, H.264 MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
FEATURES OPPO R9 Plus Samsung Galaxy A51
Phone Functions Speakerphone, call timer, conference call, flight mode, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, proximity sensor, digital compass, gyro sensor Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor, geomagnetic sensor
Security Devices Fingerprint reader Fingerprint reader (under display)
Additional Phone Features Active noise-cancellation Fast Charging, Samsung KNOX, Bixby Vision, Game Booster, Bixby Routines
OTHERS OPPO R9 Plus Samsung Galaxy A51
Included Accessories Power adapter Power adapter
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