In depth comparison and review of Samsung Galaxy A51 5G and OnePlus 9. 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.
| DESIGN AND DIMENSIONS | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-A516B/DS | - | |
| Form Factor | Touch | Touch | |
| Height | 158.9 mm | 160 mm | OnePlus 9 has greater height than Samsung Galaxy A51 5G. |
| Width | 73.6 mm | 74.2 mm | OnePlus 9 has greater width than Samsung Galaxy A51 5G. |
| Depth | 8.7 mm | 8.7 mm | Both phones are the same depth. |
| Weight | 187 g | 192 g | Samsung Galaxy A51 5G is lighter than Samsung Galaxy A51 5G. |
| Body Colour | Prism cube black | Prism cube white | Astral black | Arctic sky | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.555 W/kg (body), 0.496 W/kg (head) | - | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | Infinity-O Super AMOLED | Fluid Amoled | |
| Screen Size (Display Size) | 6.5" | 6.55" | OnePlus 9 has larger screen size than Samsung Galaxy A51 5G. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 2400 x 1080 pixels | Both phones have the same screen resolution. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | - | 402 ppi | |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | - | 1100 cd/m² | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| HDR | - | Yes | OnePlus 9 has HDR. |
| HDR Technology | - | HDR10+ | |
| Display Enhancement Technology | - | Vibrant Color Effect | |
| Display Refresh Rate | - | 120 Hz | |
| Display Features | Edge-to-Edge screen | Always-on display, Reading mode, night mode, Wide colour display (P3), sRGB support | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass (scratch resistant glass) |
| PROCESSOR | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Processor Type (CPU) | - | Qualcomm Snapdragon 888 | |
|---|---|---|---|
| Clock Speed | 2.2 GHz | - | |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | Samsung Galaxy A51 5G has 64-bit architecture. |
| Graphics System (GPU) | - | Qualcomm ADRENO 660 |
| MEMORY | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| RAM | 6 GB | LPDDR5 SDRAM - 8 GB | OnePlus 9 has more RAM than Samsung Galaxy A51 5G. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| User Memory | 105.3 GB | - | |
| Memory Interface | - | UFS 3.1 | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 1 TB | - |
| CAMERA | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 3 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 48 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | - | 1/1.43" | |
| Sensor Name | - | Sony Exmor RS IMX689 sensor | |
| Lens Aperture | F/2.0 | F/1.8 | OnePlus 9 has better lens aperture than Samsung Galaxy A51 5G. |
| Lens Construction | - | 7-element | |
| Pixel Size | - | 1.12 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | - | Yes | |
| Minimum Focal Length (Focal Distance) | - | 23 mm | |
| Digital Zoom | 8x | - | |
| Special Effects | Bokeh effect | HDR | |
| Camera Modes | Slow motion video | Panorama, Time-lapse mode, Pro mode, HYPERLAPSE, Nightscape capture mode, Portrait, Filter mode, Super Macro, Portrait video, UltraShot HDR, Smart Scene Recognition, Tilt-shift mode, Focus Peaking, Cat/Dog Face Focus, Super Stable, Video Nightscape | |
| Light Source | LED flash | Dual LED flash | |
| Video Resolutions | Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 480 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1280 x 720 (720p) at 480 fps, 7680 x 4320 (8K) at 30fps | |
| Camera Features (Functions) | Live Focus, background blur | Tracking Focus, Phase Detect Auto-Focus (PDAF), Continuous Auto Focus (CAF), RAW image capture, Dual Native ISO, 2x2 On-Chip Lens (OCL), Hasselblad Camera, Natural Color Calibration, 12-bit RAW |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 50 Megapixel | OnePlus 9 has better second camera resolution than Samsung Galaxy A51 5G. |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/1.56" | |
| Sensor Name (2nd Camera) | - | Sony Exmor RS IMX766 sensor | |
| Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
| Lens Element Qty (2nd Camera) | - | 7-element | |
| Field of View (2nd Camera) | 123 degree(s) | 119 degree(s) | Samsung Galaxy A51 5G has larger second camera lens field of view than OnePlus 9. |
| Minimum Focal Length (2nd Camera) | - | 14 mm | |
| Camera Features (2nd Camera) | - | 2x2 On-Chip Lens (OCL), Freeform Lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 5 Megapixel | 2 Megapixel | Samsung Galaxy A51 5G has higher resolution third camera than OnePlus 9. |
|---|---|---|---|
| Lens Aperture (3rd Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the third camera. |
| Lens Element Qty (3rd Camera) | - | 3-element | |
| Camera Functions (3rd Camera) | Macro camera | Monochrome |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 5 Megapixel | - | |
|---|---|---|---|
| Lens Aperture (4th Camera) | F/2.2 | - | |
| Camera Functions (4th Camera) | Depth camera | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 32 Megapixel | 16 Megapixel | Samsung Galaxy A51 5G has better front camera resolution than OnePlus 9. |
| Sensor Name (Front) | - | Sony Exmor RX IMX471 sensor | |
| Lens Aperture (Front) | F/2.2 | F/2.4 | Samsung Galaxy A51 5G has better front lens aperture than Samsung Galaxy A51 5G. |
| Pixel Size (Front) | - | 1 μm | |
| Focus Adjustment | Focus free | Focus free | |
| Special Effects (Front) | - | HDR, face retouch | |
| Camera Modes (Front) | - | Time-lapse mode | |
| Light Source (Front) | - | Display flash | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Front) | - | Electronic Image Stabiliser (EIS) |
| BATTERY AND CHARGING | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Battery Capacity (Battery Size) | 4500 mAh | 4500 mAh | Both phones have the same battery capacity. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge, Warp Charge 65T technology | OnePlus 9 has fast charging technology. |
| Recharge Time (Charging Time) | - | 29 min | |
| Wireless Charging | - | Yes | OnePlus 9 can be charged wirelessly. |
| Wireless Charging Standards | - | Qi | |
| Talk Time | 1380 minutes | - | |
| Run Time Details | Talk (4G): up to 1380 min Active online usage (LTE): up to 16 hrs Active online usage (Wi-Fi): up to 17 hrs Playback (video): up to 19 hrs Playback (audio): up to 86 hrs |
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| CELLULAR | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | - | OxygenOS (based on Android 11) | |
| Intelligent Assistant | Bixby | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, 5G NR FR1 | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19 | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | 2100, 1900, 1700, 850, 900, 1700, 800 | |
| 4G LTE Band | Band 1, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 20, Band 28, Band 38, 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 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 800 DD, FDD 700 APT, TDD 2600, 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 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | N41, n78 | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n78, n40 | |
| 5G NR Frequency | TDD TD 2500, TDD TD 3500 | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac, ANT+ | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.2 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Modem | - | Snapdragon X55 5G | |
| Messaging Services | SMS, MMS | - |
| MEDIA | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | WAV, WMA, AAC, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, LDAC, IMY, EAC3, MID, AMR-WB, AMR-NB, EAC3-JOC, AC-4 | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4 | |
| Sound Enhancements | - | Qualcomm aptX audio, Qualcomm aptX HD audio, Dolby Atmos Surround Sound |
| FEATURES | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, gyro sensor, hall sensor, geomagnetic sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, flicker sensor, sensor core | |
| Security Devices | Fingerprint reader (under display) | Fingerprint reader (under display), face recognition | |
| Additional Phone Features | Fast Charging, Samsung KNOX, Bixby Vision, Bixby Routines, Virtual Proximity Sensing | Noise Cancellation Technology, MIMO technology, Gesture Controls, OnePlus Switch, Alert Slider, dual stereo speakers, Zen mode 2.0, OnePlus Games |
| OTHERS | Samsung Galaxy A51 5G | OnePlus 9 |
|---|
| Included Accessories | Power adapter | SIM card removal tool, sticker, screen protector, USB-C to USB-C cable, protective case, Warp Charge 65 power adapter | |
|---|---|---|---|
| Compliant Standards | - | SGS |
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