Side by side comparison and review of Samsung Galaxy A9 (2018) and Samsung Galaxy A51 5G. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-A920F/DS | SM-A516B/DS | |
| Form Factor | Touch | Touch | |
| Height | 162.5 mm | 158.9 mm | Samsung Galaxy A9 (2018) has greater height than Samsung Galaxy A51 5G. |
| Width | 77 mm | 73.6 mm | Samsung Galaxy A9 (2018) has greater width than Samsung Galaxy A51 5G. |
| Depth | 7.8 mm | 8.7 mm | Samsung Galaxy A9 (2018) is narrower than Samsung Galaxy A9 (2018). |
| Weight | 183 g | 187 g | Samsung Galaxy A9 (2018) is lighter than Samsung Galaxy A9 (2018). |
| Body Colour | Lemonade blue | Caviar black | Bubblegum pink | Prism cube black | Prism cube white | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.587 W/kg (body), 0.351 W/kg (head) | 1.555 W/kg (body), 0.496 W/kg (head) | |
| Connector Type | USB Type-C - 24 pin USB-C | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | Super AMOLED | Infinity-O Super AMOLED | |
| Screen Size (Display Size) | 6.3" | 6.5" | Samsung Galaxy A51 5G has larger screen size than Samsung Galaxy A9 (2018). |
| Screen Resolution (Display Resolution) | 2220 x 1080 pixels | 2400 x 1080 pixels | Samsung Galaxy A51 5G has better screen resolution than Samsung Galaxy A9 (2018). |
| Display Format | Full HD+ | Full HD+ | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Display Features | Always-on display | Edge-to-Edge screen |
| PROCESSOR | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 660 | - | |
|---|---|---|---|
| Clock Speed | 2.2 GHz | 2.2 GHz | Both phones have the same clock speed. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | Yes | Both phones have 64-bit architecture. |
| MEMORY | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| RAM | 6 GB | 6 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| User Memory | - | 105.3 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 512 GB | microSDHC, microSDXC - up to 1 TB |
| CAMERA | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 4 | |
|---|---|---|---|
| Sensor Resolution | 24 Megapixel | 48 Megapixel | Samsung Galaxy A51 5G has better camera resolution than Samsung Galaxy A9 (2018). |
| Lens Aperture | F/1.7 | F/2.0 | Samsung Galaxy A9 (2018) has better lens aperture than Samsung Galaxy A9 (2018). |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 8x | |
| Special Effects | - | Bokeh effect | |
| Camera Modes | - | Slow motion video | |
| Light Source | LED flash | 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 | |
| Camera Features (Functions) | - | Live Focus, background blur |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | 12 Megapixel | Samsung Galaxy A51 5G has better second camera resolution than Samsung Galaxy A9 (2018). |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Samsung Galaxy A51 5G has better second camera lens aperture than Samsung Galaxy A9 (2018). |
| Field of View (2nd Camera) | - | 123 degree(s) |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 10 Megapixel | 5 Megapixel | Samsung Galaxy A9 (2018) has higher resolution third camera than Samsung Galaxy A51 5G. |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the third camera. |
| Optical Zoom | 2x | - | |
| Camera Functions (3rd Camera) | - | Macro camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 5 Megapixel | 5 Megapixel | Both phones have the same resolution of the fourth camera. |
|---|---|---|---|
| Lens Aperture (4th Camera) | F/2.2 | F/2.2 | Both phones have the same lens aperture of the fourth camera. |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 24 Megapixel | 32 Megapixel | Samsung Galaxy A51 5G has better front camera resolution than Samsung Galaxy A9 (2018). |
| Lens Aperture (Front) | F/2.0 | F/2.2 | Samsung Galaxy A9 (2018) has better front lens aperture than Samsung Galaxy A9 (2018). |
| Focus Adjustment | - | Focus free |
| BATTERY AND CHARGING | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| Battery Capacity (Battery Size) | 3800 mAh | 4500 mAh | Samsung Galaxy A51 5G has larger battery capacity than Samsung Galaxy A9 (2018). |
|---|---|---|---|
| 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 |
| CELLULAR | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Samsung Galaxy A51 5G has more advanced generation mobile network. |
| Operating System | Android 8.0 Oreo | - | |
| Intelligent Assistant | Bixby | Bixby | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, 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 | |
| 3G UMTS Frequency | - | 2100, 1900, 850, 900 | |
| 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 | |
| 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 | |
| 5G NR Band | - | N41, n78 | |
| 5G NR Frequency | - | TDD TD 2500, TDD TD 3500 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac, ANT+/ANT | IEEE 802.11a/b/g/n/ac, ANT+ | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| 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, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 |
| FEATURES | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| 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, proximity sensor, gyro sensor, hall sensor, RGB sensor, geomagnetic sensor | Accelerometer, ambient light sensor, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | Face recognition, fingerprint reader | Fingerprint reader (under display) | |
| Additional Phone Features | MIMO technology, Bixby Vision | Fast Charging, Samsung KNOX, Bixby Vision, Bixby Routines, Virtual Proximity Sensing |
| OTHERS | Samsung Galaxy A9 (2018) | Samsung Galaxy A51 5G |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|
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