Side by side comparison and review of LG K9 and Samsung Galaxy A51. 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 | LG K9 | Samsung Galaxy A51 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-A515F/DSN | |
| Form Factor | Touch | Touch | |
| Height | 146.3 mm | 158.5 mm | Samsung Galaxy A51 has greater height than LG K9. |
| Width | 73.2 mm | 73.6 mm | Samsung Galaxy A51 has greater width than LG K9. |
| Depth | 8.2 mm | 7.9 mm | Samsung Galaxy A51 is narrower than LG K9. |
| Weight | 148 g | 172 g | LG K9 is lighter than LG K9. |
| Body Colour | Aurora black | Silver | Prism crush black | Haze crush silver | Prism crush blue | Prism crush white | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.43 W/kg (body), 0.763 W/kg (head) | 0.369 W/kg (head), 1.59 W/kg (body), 2.93 W/kg (limb) | |
| Integrated Components | FM radio | - | |
| 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 | Single-SIM | Dual-SIM |
| DISPLAY | LG K9 | Samsung Galaxy A51 |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | TFT | Super AMOLED | |
| Screen Size (Display Size) | 5" | 6.5" | Samsung Galaxy A51 has larger screen size than LG K9. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 2400 x 1080 pixels | Samsung Galaxy A51 has better screen resolution than LG K9. |
| Display Format | HD | Full HD+ | |
| Pixel Density | - | 408 ppi | |
| Colour Depth | - | 16.7 million colours | |
| Display Enhancement Technology | OnCell technology | - | |
| Display Features | - | Edge-to-Edge screen, Infinity O display |
| PROCESSOR | LG K9 | Samsung Galaxy A51 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 210 | Samsung Exynos 9611 | |
|---|---|---|---|
| Processor Number | MSM8909 | - | |
| Clock Speed | 1.3 GHz | 2.3 GHz | Samsung Galaxy A51 has higher clock speed than LG K9. |
| Processor Core Qty | Quad-core | 8-core | Samsung Galaxy A51 has higher processor core quantity than LG K9. |
| 64-bit Architecture | - | Yes | Samsung Galaxy A51 has 64-bit architecture. |
| MEMORY | LG K9 | Samsung Galaxy A51 |
|---|
| RAM | 2 GB | 4 GB | Samsung Galaxy A51 has more RAM than LG K9. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 128 GB | Samsung Galaxy A51 has more internal memory than LG K9. |
| User Memory | - | 107 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC - up to 32 GB | microSDHC, microSDXC - up to 512 GB |
| CAMERA | LG K9 | Samsung Galaxy A51 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 8 Megapixel | 48 Megapixel | Samsung Galaxy A51 has better camera resolution than LG K9. |
| Lens Aperture | - | F/2.0 | |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | 4x | 8x | Samsung Galaxy A51 has better digital zoom than LG K9. |
| Special Effects | HDR | - | |
| Camera Modes | Timer mode, sport mode, low-light shots | Slow motion mode, Live Focus mode | |
| Light Source | LED light | LED flash | |
| Video Resolutions | 1280 x 720 (720p) | 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) | 5 Megapixel | 32 Megapixel | Samsung Galaxy A51 has better front camera resolution than LG K9. |
| Lens Aperture (Front) | - | F/2.2 | |
| Focus Adjustment | - | Focus free |
| BATTERY AND CHARGING | LG K9 | Samsung Galaxy A51 |
|---|
| Battery Capacity (Battery Size) | 2500 mAh | 4000 mAh | Samsung Galaxy A51 has larger battery capacity than LG K9. |
|---|---|---|---|
| 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 Ion | Lithium Ion |
| CELLULAR | LG K9 | Samsung Galaxy A51 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 7.1.2 (Nougat) | Android 10 | |
| User Interface | - | One UI | |
| Intelligent Assistant | - | Bixby | |
| Navigation | GPS | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | LG K9 | Samsung Galaxy A51 |
|---|
| 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 | |
| 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 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 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 802.11b/g/n | IEEE 802.11a/b/g/n/ac, ANT+ | |
| Bluetooth | Bluetooth 4.2 | 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 | LG K9 | Samsung Galaxy A51 |
|---|
| Supported Digital Audio Standards | - | 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, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 |
| FEATURES | LG K9 | Samsung Galaxy A51 |
|---|
| 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, proximity sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | - | Fingerprint reader (under display) | |
| Additional Phone Features | KnockON, Knock Code function, Smart Keyboard, Easy Home mode, QuickMemo+ function, Smart Lock, Shortcut Keys | Fast Charging, Samsung KNOX, Bixby Vision, Game Booster, Bixby Routines |
| OTHERS | LG K9 | Samsung Galaxy A51 |
|---|
| Included Accessories | USB cable, power adapter | Power adapter | |
|---|---|---|---|
| Compliant Standards | HAC (Hearing Aid Compatible) | - |
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