In depth comparison and review of Xiaomi MI 9 SE 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 | Xiaomi MI 9 SE | LG K40 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | LM-X420EMW | |
| Form Factor | Touch | Touch | |
| Height | 147.5 mm | 153 mm | LG K40 has greater height than Xiaomi MI 9 SE. |
| Width | 70.5 mm | 71.9 mm | LG K40 has greater width than Xiaomi MI 9 SE. |
| Depth | 7.45 mm | 8.3 mm | Xiaomi MI 9 SE is narrower than Xiaomi MI 9 SE. |
| Weight | 155 g | 145 g | LG K40 is lighter than Xiaomi MI 9 SE. |
| Body Colour | Ocean blue | Piano black | New Aurora Black | Moroccan blue | |
| Body Material | Glass | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.385 W/kg (body), 1.385 W/kg (head) | 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 Micro-USB - 5 pin Micro-USB Type B |
|
| SIM Card Type (Size) | Nano SIM | - | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Xiaomi MI 9 SE | LG K40 |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | AMOLED | IPS | |
| Screen Size (Display Size) | 5.97" | 5.7" | Xiaomi MI 9 SE has larger screen size than LG K40. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 1440 x 720 pixels | Xiaomi MI 9 SE has better screen resolution than LG K40. |
| Display Format | Full HD+ | HD | |
| Pixel Density | 432 ppi | 282 ppi | Xiaomi MI 9 SE has better pixel density than LG K40. |
| Aspect Ratio | - | 18:9 | |
| Max Brightness | 600 cd/m² | - | |
| Contrast Ratio | 60000:1 | - | |
| HDR | Yes | - | Xiaomi MI 9 SE has HDR. |
| HDR Technology | HDR10 | - | |
| Display Enhancement Technology | Sunshine mode 2.0 | - | |
| Display Features | Always-on display, Colour temperature adjustment, night mode, Wide Colour Gamut (WCG), 256 ranks adjustable Reading mode | Curved glass, FullVision display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass), fingerprint-resistant coating, oil protective coating | - |
| PROCESSOR | Xiaomi MI 9 SE | LG K40 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 712 | MediaTek | |
|---|---|---|---|
| Processor Number | - | MT6762 | |
| Clock Speed | 2.3 GHz | 2 GHz | Xiaomi MI 9 SE 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 616 | PowerVR GE8320 |
| MEMORY | Xiaomi MI 9 SE | LG K40 |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | 2 GB | Xiaomi MI 9 SE has more RAM than LG K40. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | Xiaomi MI 9 SE has more internal memory than LG K40. |
| User Memory | - | 20.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSDXC - up to 2 TB |
| CAMERA | Xiaomi MI 9 SE | LG K40 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 1 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 16 Megapixel | Xiaomi MI 9 SE has better camera resolution than LG K40. |
| Sensor Size | - | 1/3" | |
| Sensor Name | Sony Exmor RS IMX586 sensor | - | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/1.75 | F/2.0 | Xiaomi MI 9 SE has better lens aperture than Xiaomi MI 9 SE. |
| Pixel Size | - | 1 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Optical Zoom | 2x | - | |
| Digital Zoom | 10x | - | |
| Special Effects | HDR | - | |
| Camera Modes | Burst mode, Panorama, portrait mode, AI Beautify, Smart ultra-wide angle mode, Ultra nightscape mode, Photo timer, Level display, Custom watermark, Full body portrait mode, Moon mode | - | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI 9 SE has face detection. |
| Light Source | Dual 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 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) | Sapphire crystal lens cover, Phase Detect Auto-Focus (PDAF), Dynamic photos, video stabilisation, Contrast Auto-Focus, AI scene detection, AI studio lighting, Video Beautify, AI Triple camera, 960 fps Smart audio pairing, AI lens flare, AI high resolution photos, Portrait mode background blur adjustment, Ultra wide-angle edge distortion correction, Group photo face correction, Portrait mode background blurring, Motion tracking, Quick motion | 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/2.4 | - | |
| Field of View (2nd Camera) | 123 degree(s) | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 8 Megapixel | - | |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.4 | - | |
| Pixel Size (3rd Camera) | 1 μm | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 8 Megapixel | Xiaomi MI 9 SE has better front camera resolution than LG K40. |
| Sensor Size (Front) | - | 1/4" | |
| Lens Aperture (Front) | - | F/2.0 | |
| Pixel Size (Front) | - | 1.12 μm | |
| Special Effects (Front) | HDR, Magic mirror | - | |
| Camera Modes (Front) | AI portrait mode, AI Beautify, AI makeup | Portrait mode | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI 9 SE has face detection. |
| Light Source (Front) | - | LED flash | |
| Camera Features (Front) | Self-timer, age recognition, Video Beautify, AI scene detection, AI studio lighting, Eye light, AI feature adjustment, AI lens flare | - |
| BATTERY AND CHARGING | Xiaomi MI 9 SE | LG K40 |
|---|
| Battery Capacity (Battery Size) | 3070 mAh | 3000 mAh | Xiaomi MI 9 SE has larger battery capacity than LG K40. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 4.0+ | - | Xiaomi MI 9 SE has fast charging technology. |
| 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 | Xiaomi MI 9 SE | 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 8.1 Oreo | |
| User Interface | MIUI 10 | - | |
| Intelligent Assistant | Google Assistant | Google Assistant | |
| Payment Technology | Google Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS |
| COMMUNICATIONS | Xiaomi MI 9 SE | 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 | 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 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 | FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 LE | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi MI 9 SE | LG K40 |
|---|
| Supported Digital Audio Standards | WAV, AAC, AMR, MP3, FLAC, eAAC+, APE (Monkey's Audio), apt-X, LDAC, AMR-WB, AMR-NB, M4V, apt-X HD | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, VP8, VP9, H.265, MP4 | - | |
| Sound Enhancements | Qualcomm TrueWireless Stereo Plus | DTS: X 3D Premium Sound |
| FEATURES | Xiaomi MI 9 SE | 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, digital compass, gyro sensor, ultrasonic proximity sensor, linear rotation vector sensor | Ambient light sensor, proximity sensor | |
| Security Devices | Fingerprint reader (under display) | Face recognition, fingerprint reader | |
| Additional Phone Features | Infrared remote control, MIMO technology, MU-MIMO technology, MI Turbo, GAME Turbo | Google Lens, Google Assistant Key, AI Cam |
| OTHERS | Xiaomi MI 9 SE | LG K40 |
|---|
| Included Accessories | Protective cover, power adapter, SIM card removal tool, USB-C cable, USB-C to 3.5 jack audio cable | Power adapter | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland Certified Safe Fast-Charge System | MIL-STD 810G |
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