In depth comparison and review of Samsung Galaxy S8 and LG K40. 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 S8 | LG K40 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G950FD | LM-X420EMW | |
| Form Factor | Touch | Touch | |
| Height | 148.9 mm | 153 mm | LG K40 has greater height than Samsung Galaxy S8. |
| Width | 68.1 mm | 71.9 mm | LG K40 has greater width than Samsung Galaxy S8. |
| Depth | 8 mm | 8.3 mm | Samsung Galaxy S8 is narrower than Samsung Galaxy S8. |
| Weight | 155 g | 145 g | LG K40 is lighter than Samsung Galaxy S8. |
| Body Colour | Gold maple | Midnight black | New Aurora Black | Moroccan blue | |
| Protection | Dustproof, splashproof, waterproof | - | |
| Waterproof (Water-resistant) | Yes | - | Samsung Galaxy S8 is waterproof. |
| IP rating | IP68 | - | |
| SAR Value | 1.55 W/kg (simultaneous), 0.75 W/kg (body), 0.44 W/kg (head) | 1.597 W/kg (body), 0.518 W/kg (head) | |
| Integrated Components | Heart rate sensor | FM radio | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
|
| SIM Card Type (Size) | Nano SIM | - | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | Samsung Galaxy S8 | LG K40 |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | Quad HD+ Super AMOLED | IPS | |
| Screen Size (Display Size) | 5.8" | 5.7" | Samsung Galaxy S8 has larger screen size than LG K40. |
| Screen Resolution (Display Resolution) | 2960 x 1440 pixels | 1440 x 720 pixels | Samsung Galaxy S8 has better screen resolution than LG K40. |
| Display Format | - | HD | |
| Pixel Density | 570 ppi | 282 ppi | Samsung Galaxy S8 has better pixel density than LG K40. |
| Aspect Ratio | - | 18:9 | |
| Colour Depth | 16.7 million colours | - | |
| Display Features | Always-on display | Curved glass, FullVision display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
| PROCESSOR | Samsung Galaxy S8 | LG K40 |
|---|
| Processor Type (CPU) | Samsung Exynos | MediaTek | |
|---|---|---|---|
| Processor Number | 8895 | MT6762 | |
| Clock Speed | 2.3 GHz | 2 GHz | Samsung Galaxy S8 has higher clock speed than LG K40. |
| 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) | Mali-G71 MP20 | PowerVR GE8320 |
| MEMORY | Samsung Galaxy S8 | LG K40 |
|---|
| RAM | LPDDR4 SDRAM - 4 GB | 2 GB | Samsung Galaxy S8 has more RAM than LG K40. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | Samsung Galaxy S8 has more internal memory than LG K40. |
| User Memory | 52.3 GB | 20.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSDXC - up to 2 TB |
| CAMERA | Samsung Galaxy S8 | LG K40 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 16 Megapixel | LG K40 has better camera resolution than Samsung Galaxy S8. |
| Sensor Size | 1/2.55" | 1/3" | LG K40 has better camera sensor size than Samsung Galaxy S8. |
| Lens Aperture | F/1.7 | F/2.0 | Samsung Galaxy S8 has better lens aperture than Samsung Galaxy S8. |
| Pixel Size | - | 1 μm | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S8 has optical stabilisation. |
| Focus Adjustment | Automatic, manual | Automatic | |
| Digital Zoom | 8x | - | |
| Self-Timer Delay | Yes | - | |
| Special Effects | Motion effect, HDR, Stamp, Bokeh effect, Grid Line, Stickers | - | |
| Camera Modes | Panorama, Slow motion mode, Pro mode, Timer mode, Virtual Shot, HYPERLAPSE, Food mode | - | |
| Face Recognition (Face ID) | Face detection | - | Samsung Galaxy S8 has face detection. |
| White Balance | Custom, automatic | - | |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps | - | |
| Camera Features (Functions) | Selective Focus, Quick Launch, Playback zoom, Dual Pixel technology, Motion photo, Exposure, Shutter speed, geotagging, RAW image capture, VDIS (Video Digital Image Stabilisation) | Phase Detect Auto-Focus (PDAF), GIF Creation, 8 different scenes |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 8 Megapixel | Both phones have the same front camera resolution. |
| Sensor Size (Front) | 1/3.6" | 1/4" | LG K40 has better front camera sensor size than Samsung Galaxy S8. |
| Sensor Type (Front) | CMOS | - | |
| Lens Aperture (Front) | F/1.7 | F/2.0 | Samsung Galaxy S8 has better front lens aperture than Samsung Galaxy S8. |
| Pixel Size (Front) | - | 1.12 μm | |
| Focus Adjustment | Automatic | - | |
| Camera Modes (Front) | Slow motion video, Virtual Shot | Portrait mode | |
| Light Source (Front) | - | LED flash |
| BATTERY AND CHARGING | Samsung Galaxy S8 | LG K40 |
|---|
| Battery Capacity (Battery Size) | 3000 mAh | 3000 mAh | Both phones have the same battery capacity. |
|---|---|---|---|
| Wireless Charging | Yes | - | Samsung Galaxy S8 can be charged wirelessly. |
| Wireless Charging Standards | WPC, PMA | - | |
| Standby Time | 81.12 hours | 100 hours | LG K40 has longer standby time than Samsung Galaxy S8. |
| Talk Time | 1200 minutes | 480 minutes | Samsung Galaxy S8 has longer battery life when making calls than LG K40. |
| Run Time Details | Talk (WCDMA): up to 1200 min Active online usage (Wi-Fi): up to 14 hrs Active online usage (3G): up to 11 hrs Active online usage (LTE): up to 12 hrs Playback (audio (Always On Display Off)): up to 67 hrs Playback (audio (Always On Display On)): up to 44 hrs Playback (video): up to 16 hrs |
Talk: up to 480 min Standby: up to 100 hrs |
|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Samsung Galaxy S8 | LG K40 |
|---|
| Technology | TD-SCDMA / WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 7.0 Nougat | Android 8.1 Oreo | |
| Intelligent Assistant | Bixby | Google Assistant | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS |
| COMMUNICATIONS | Samsung Galaxy S8 | LG K40 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-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 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66 | Band 1, Band 3, Band 7, Band 8, Band 20, Band 38 | |
| 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 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 | 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/ac | |
| Bluetooth | Bluetooth 5.0 LE | Bluetooth 5.0 LE | |
| Bluetooth Profiles | HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, SAP, PBAP, MAP, HOGP | - | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Samsung Galaxy S8 | LG K40 |
|---|
| Supported Digital Audio Standards | WAV, WMA, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, apt-X, DSF, DSD, MXMF, OGA, AWB, IMY, RTTTL, RTX, OTA, DFF, 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 | - | |
| Sound Enhancements | - | DTS: X 3D Premium Sound |
| FEATURES | Samsung Galaxy S8 | LG K40 |
|---|
| 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, barometer, gyro sensor, hall sensor, RGB sensor, heart rate, pressure sensor, geomagnetic sensor | Ambient light sensor, proximity sensor | |
| Security Devices | Fingerprint reader, eye scan | Face recognition, fingerprint reader | |
| Additional Phone Features | Face Unlock, Wi-Fi Miracast, MU-MIMO technology, Fast Charging, Samsung KNOX | Google Lens, Google Assistant Key, AI Cam |
| OTHERS | Samsung Galaxy S8 | LG K40 |
|---|
| Included Accessories | Stereo headset, USB cable, power adapter, SIM card removal tool, micro-USB connector, 2 pair ear plugs, USB-C to Micro-USB Adapter | Power adapter | |
|---|---|---|---|
| Compliant Standards | IP68 | MIL-STD 810G | |
| Max Depth of Water Resistance | 1.5 m | - |
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