Side by side comparison and review of Xiaomi POCO X3 NFC and LG K40. 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 | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | LM-X420EMW | |
| Form Factor | Touch | Touch | |
| Height | 165.3 mm | 153 mm | Xiaomi POCO X3 NFC has greater height than LG K40. |
| Width | 76.8 mm | 71.9 mm | Xiaomi POCO X3 NFC has greater width than LG K40. |
| Depth | 9.4 mm | 8.3 mm | LG K40 is narrower than Xiaomi POCO X3 NFC. |
| Weight | 215 g | 145 g | LG K40 is lighter than Xiaomi POCO X3 NFC. |
| Body Colour | Cobalt blue | Shadow grey | New Aurora Black | Moroccan blue | |
| Protection | Splashproof | - | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | IP53 | - | |
| SAR Value | 0.558 W/kg (head), 0.986 W/kg (body), 1.997 W/kg (limb) | 1.597 W/kg (body), 0.518 W/kg (head) | |
| Integrated Components | - | 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 | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Display Type | - | LCD display | |
|---|---|---|---|
| Display Technology | - | IPS | |
| Screen Size (Display Size) | 6.67" | 5.7" | Xiaomi POCO X3 NFC has larger screen size than LG K40. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 1440 x 720 pixels | Xiaomi POCO X3 NFC has better screen resolution than LG K40. |
| Display Format | Full HD+ | HD | |
| Pixel Density | 395 ppi | 282 ppi | Xiaomi POCO X3 NFC has better pixel density than LG K40. |
| Aspect Ratio | 20:9 | 18:9 | |
| Contrast Ratio | 1500:1 | - | |
| HDR | Yes | - | Xiaomi POCO X3 NFC has HDR. |
| HDR Technology | HDR10 | - | |
| Display Refresh Rate | 120 Hz | - | |
| Touch Sampling Rate | 240 Hz | - | |
| Display Features | Dark mode, Dot Display | Curved glass, FullVision display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
| PROCESSOR | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 732G | MediaTek | |
|---|---|---|---|
| Processor Number | - | MT6762 | |
| Clock Speed | 2.3 GHz | 2 GHz | Xiaomi POCO X3 NFC 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) | Qualcomm ADRENO 618 | PowerVR GE8320 |
| MEMORY | Xiaomi POCO X3 NFC | LG K40 |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | 2 GB | Xiaomi POCO X3 NFC has more RAM than LG K40. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | Xiaomi POCO X3 NFC has more internal memory than LG K40. |
| User Memory | - | 20.2 GB | |
| Memory Interface | UFS 2.1 | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSDXC - up to 2 TB |
| CAMERA | Xiaomi POCO X3 NFC | LG K40 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 1 | |
|---|---|---|---|
| Sensor Resolution | 64 Megapixel | 16 Megapixel | Xiaomi POCO X3 NFC has better camera resolution than LG K40. |
| Sensor Size | 1/1.73" | 1/3" | LG K40 has better camera sensor size than Xiaomi POCO X3 NFC. |
| Sensor Name | Sony Exmor RS IMX682 sensor | - | |
| Lens Aperture | F/1.89 | F/2.0 | Xiaomi POCO X3 NFC has better lens aperture than Xiaomi POCO X3 NFC. |
| Pixel Size | 1.6 μm | 1 μm | Xiaomi POCO X3 NFC has larger camera pixel size than LG K40. |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | Kaleidoscope | - | |
| Camera Modes | Pro mode, night mode, SteadyShot, AI portrait mode, AI Beautify, Pro Video mode, Macro video, Movie frame, photo filters, AI SkyScaping 3.0, AI photo clones, Timed burst, Document mode 2.0 | - | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, 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 120 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | - | |
| Camera Features (Functions) | 4-in-1 Super Pixel, AI scene detection, AI Quad camera, Support LOG format, 6 long exposure modes, AI dynamic studio | Phase Detect Auto-Focus (PDAF), GIF Creation, 8 different scenes |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 13 Megapixel | - | |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | - | |
| Field of View (2nd Camera) | 119 degree(s) | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | - | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | F/2.4 | - | |
| Pixel Size (3rd Camera) | 1.75 μm | - | |
| Camera Functions (3rd Camera) | Macro camera | - | |
| Camera Features (3rd Camera) | FF (4cm) | - |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 2 Megapixel | - | |
|---|---|---|---|
| Lens Aperture (4th Camera) | F/2.4 | - | |
| Pixel Size (4th Camera) | 1.75 μm | - | |
| Camera Functions (4th Camera) | Depth camera | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 8 Megapixel | Xiaomi POCO X3 NFC has better front camera resolution than LG K40. |
| Sensor Size (Front) | - | 1/4" | |
| Lens Aperture (Front) | F/2.2 | F/2.0 | LG K40 has better front lens aperture than Xiaomi POCO X3 NFC. |
| Pixel Size (Front) | 1.6 μm | 1.12 μm | Xiaomi POCO X3 NFC has larger front camera pixel size than LG K40. |
| Special Effects (Front) | HDR | - | |
| Camera Modes (Front) | Selfie panorama, portrait mode, AI Beautify, Short video mode | Portrait mode | |
| Light Source (Front) | Display flash | LED flash | |
| Camera Features (Front) | Self-timer, 4-in-1 Super Pixel technology, AI scene detection, AI studio lighting, Palm shutter, full screen frame, Short video filter | - |
| BATTERY AND CHARGING | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Battery Capacity (Battery Size) | 5160 mAh | 3000 mAh | Xiaomi POCO X3 NFC has larger battery capacity than LG K40. |
|---|---|---|---|
| Standby Time | - | 100 hours | |
| Talk Time | - | 480 minutes | |
| Run Time Details | Playback (video): up to 17 hrs Gaming: up to 10 hrs Playback (Music): up to 153 hrs |
Talk: up to 480 min Standby: up to 100 hrs |
|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 10 | Android 8.1 Oreo | |
| User Interface | POCO Launcher 2.0 (MIUI12) | - | |
| Intelligent Assistant | - | Google Assistant | |
| Payment Technology | Google Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS |
| COMMUNICATIONS | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | - | 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 20, Band 28, Band 38, Band 40, Band 41 | 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 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600 | |
| Wireless Interface | Wi-Fi | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.1 | Bluetooth 5.0 LE | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), M4A, DSF, AWB | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | - | |
| Sound Enhancements | Hi-Res audio | DTS: X 3D Premium Sound |
| FEATURES | Xiaomi POCO X3 NFC | 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, ambient light sensor, proximity sensor, digital compass, gyro sensor | Ambient light sensor, proximity sensor | |
| Security Devices | Face recognition, fingerprint reader (side) | Face recognition, fingerprint reader | |
| Additional Phone Features | Infrared remote control, MIMO technology, AI face unlock, Google Lens, linear motor, Qualcomm 4th generation AI Engine, LiquidCool Technology 1.0 Plus, GAME Turbo 3.0 | Google Lens, Google Assistant Key, AI Cam |
| OTHERS | Xiaomi POCO X3 NFC | LG K40 |
|---|
| Included Accessories | SIM card removal tool, USB-C cable, 33W charger, anti-bacterial case, anti-bacterial screen protector | Power adapter | |
|---|---|---|---|
| Compliant Standards | IP53, TUV Rheinland Low Blue Light Certification | MIL-STD 810G |
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