Side by side comparison and review of Samsung Galaxy A9 (2018) and LG K51S. 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) | LG K51S |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-A920F/DS | LM-K510EMW | |
| Form Factor | Touch | Touch | |
| Height | 162.5 mm | 165.2 mm | LG K51S has greater height than Samsung Galaxy A9 (2018). |
| Width | 77 mm | 76.7 mm | Samsung Galaxy A9 (2018) has greater width than LG K51S. |
| Depth | 7.8 mm | 8.26 mm | Samsung Galaxy A9 (2018) is narrower than Samsung Galaxy A9 (2018). |
| Weight | 183 g | 194 g | Samsung Galaxy A9 (2018) is lighter than Samsung Galaxy A9 (2018). |
| Body Colour | Lemonade blue | Caviar black | Bubblegum pink | Pink | Titan | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.587 W/kg (body), 0.351 W/kg (head) | 1.335 W/kg (body), 0.501 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 | Single-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | Super AMOLED | IPS | |
| Screen Size (Display Size) | 6.3" | 6.55" | LG K51S has larger screen size than Samsung Galaxy A9 (2018). |
| Screen Resolution (Display Resolution) | 2220 x 1080 pixels | 1600 x 720 pixels | Samsung Galaxy A9 (2018) has better screen resolution than LG K51S. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | - | 268 ppi | |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | - | 400 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Display Features | Always-on display | Reading mode, FullVision display, night mode, hole in display | |
| Display Protection (Screen Protector) | - | Tempered glass |
| PROCESSOR | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 660 | MediaTek | |
|---|---|---|---|
| Processor Number | - | MT6765 | |
| Clock Speed | 2.2 GHz | 2.3 GHz | LG K51S has higher clock speed than Samsung Galaxy A9 (2018). |
| 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. |
| Graphics System (GPU) | - | IMG PowerVR GE8320 |
| MEMORY | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| RAM | 6 GB | 3 GB | Samsung Galaxy A9 (2018) has more RAM than LG K51S. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | Samsung Galaxy A9 (2018) has more internal memory than LG K51S. |
| User Memory | - | 50.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 512 GB | microSDHC, microSDXC - up to 2 TB |
| CAMERA | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 4 | |
|---|---|---|---|
| Sensor Resolution | 24 Megapixel | 32 Megapixel | LG K51S has better camera resolution than Samsung Galaxy A9 (2018). |
| Lens Aperture | F/1.7 | F/1.8 | Samsung Galaxy A9 (2018) has better lens aperture than Samsung Galaxy A9 (2018). |
| Field of View (FoV) | - | 76.3 degree(s) | |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | - | 24 mm | |
| Digital Zoom | - | 8x | |
| Self-Timer Delay | - | Yes | |
| Special Effects | - | HDR | |
| Camera Modes | - | Burst mode, portrait mode, Flowers, Animals, Food, Person, Sunset, Sunrise, City, Landscape | |
| Face Recognition (Face ID) | - | Face detection | LG K51S has face detection. |
| White Balance | - | Automatic | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | - | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | - | Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | 5 Megapixel | Samsung Galaxy A9 (2018) has better second camera resolution than LG K51S. |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | Super wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | LG K51S has better second camera lens aperture than Samsung Galaxy A9 (2018). |
| Field of View (2nd Camera) | - | 115 degree(s) | |
| Minimum Focal Length (2nd Camera) | - | 16 mm |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 10 Megapixel | 2 Megapixel | Samsung Galaxy A9 (2018) has higher resolution third camera than LG K51S. |
|---|---|---|---|
| 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. |
| Field of View (3rd Camera) | - | 88.9 degree(s) | |
| Optical Zoom | 2x | - | |
| Camera Functions (3rd Camera) | - | Depth camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 5 Megapixel | 2 Megapixel | Samsung Galaxy A9 (2018) has higher resolution fourth camera than LG K51S. |
|---|---|---|---|
| Lens Aperture (4th Camera) | F/2.2 | F/2.4 | Samsung Galaxy A9 (2018) has better fourth camera lens aperture than Samsung Galaxy A9 (2018). |
| Field of View (4th Camera) | - | 88.6 degree(s) | |
| Camera Functions (4th Camera) | - | Macro camera | |
| Camera Features (4th Camera) | - | 4cm macro photography |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 24 Megapixel | 13 Megapixel | Samsung Galaxy A9 (2018) has better front camera resolution than LG K51S. |
| Lens Aperture (Front) | F/2.0 | - | |
| Camera Modes (Front) | - | Gesture Shot, Selfie portrait | |
| Face Recognition (Face ID) | - | Face detection | LG K51S has face detection. |
| Camera Features (Front) | - | 17 filters |
| BATTERY AND CHARGING | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| Battery Capacity (Battery Size) | 3800 mAh | 4000 mAh | LG K51S has larger battery capacity than Samsung Galaxy A9 (2018). |
|---|---|---|---|
| Standby Time | - | 100 hours | |
| Talk Time | - | 480 minutes | |
| Run Time Details | - | Talk: up to 480 min Standby: up to 100 hrs |
|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 8.0 Oreo | Android 9.0 Pie | |
| User Interface | - | LG UX 9 | |
| Intelligent Assistant | Bixby | Google Assistant | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS |
| COMMUNICATIONS | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 4G LTE Band | - | Band 1, Band 3, Band 7, Band 8, Band 20, Band 38 | |
| 4G LTE Frequency | - | FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac, ANT+/ANT | IEEE 802.11a/b/g/n | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 BLE | |
| Bluetooth Profiles | - | HFP, HSP, OPP, PAN, SPP, GOEP, A2DP, AVRCP, HID, SAP, GAVDP, PBAP, MAP, GATT, HDP, HOGP, ScPP | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 | MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4 | |
| Sound Enhancements | - | DTS: X 3D Surround Sound |
| FEATURES | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| 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, proximity sensor, digital compass | |
| Security Devices | Face recognition, fingerprint reader | Fingerprint reader | |
| Additional Phone Features | MIMO technology, Bixby Vision | DLNA Certified, Dual microphones, KnockON, QuickMemo+ function, Mini View function, Capture+, EasyHome, Clip Tray, Google Lens, AI Cam, Game Tools, Google Assistant Button |
| OTHERS | Samsung Galaxy A9 (2018) | LG K51S |
|---|
| Included Accessories | Power adapter | Power adapter, SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | - | MIL-STD 810G |
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