Side by side comparison and review of Xiaomi Redmi Note 4x 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 Redmi Note 4x | LG K40 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | LM-X420EMW | |
| Form Factor | Touch | Touch | |
| Height | 151 mm | 153 mm | LG K40 has greater height than Xiaomi Redmi Note 4x. |
| Width | 76 mm | 71.9 mm | Xiaomi Redmi Note 4x has greater width than LG K40. |
| Depth | 8.45 mm | 8.3 mm | LG K40 is narrower than Xiaomi Redmi Note 4x. |
| Weight | 165 g | 145 g | LG K40 is lighter than Xiaomi Redmi Note 4x. |
| Body Colour | Platinum silver grey | New Aurora Black | Moroccan blue | |
| Body Material | Metal | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.674 W/kg (body), 0.724 W/kg (head) | 1.597 W/kg (body), 0.518 W/kg (head) | |
| Integrated Components | - | FM radio | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
|
| SIM Card Type (Size) | Micro SIM, nano SIM | - | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Micro SIM + nano SIM/microSD | - |
| DISPLAY | Xiaomi Redmi Note 4x | LG K40 |
|---|
| Display Type | - | LCD display | |
|---|---|---|---|
| Display Technology | - | IPS | |
| Screen Size (Display Size) | 5.5" | 5.7" | LG K40 has larger screen size than Xiaomi Redmi Note 4x. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1440 x 720 pixels | Xiaomi Redmi Note 4x has better screen resolution than LG K40. |
| Display Format | Full HD | HD | |
| Pixel Density | 403 ppi | 282 ppi | Xiaomi Redmi Note 4x has better pixel density than LG K40. |
| Aspect Ratio | - | 18:9 | |
| Max Brightness | 450 cd/m² | - | |
| Contrast Ratio | 1000:1 | - | |
| Display Features | 2.5D Glass, Eye protection mode, Colour temperature adjustment | Curved glass, FullVision display |
| PROCESSOR | Xiaomi Redmi Note 4x | LG K40 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 625 | MediaTek | |
|---|---|---|---|
| Processor Number | - | MT6762 | |
| Clock Speed | 2 GHz | 2 GHz | Both phones have the same clock speed. |
| Processor Core Qty | - | 8-core | |
| 64-bit Architecture | - | Yes | LG K40 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 506 | PowerVR GE8320 |
| MEMORY | Xiaomi Redmi Note 4x | LG K40 |
|---|
| RAM | 3 GB | 2 GB | Xiaomi Redmi Note 4x has more RAM than LG K40. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 32 GB | Both phones have the same internal memory capacity. |
| User Memory | - | 20.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 2 TB |
| CAMERA | Xiaomi Redmi Note 4x | LG K40 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 16 Megapixel | LG K40 has better camera resolution than Xiaomi Redmi Note 4x. |
| Sensor Size | - | 1/3" | |
| Lens Aperture | F/2.0 | F/2.0 | Both phones have the same camera lens aperture. |
| Lens Construction | 5-element | - | |
| Pixel Size | - | 1 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR | - | |
| Camera Modes | Burst mode, Panorama, low-light shots | - | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 4x has face detection. |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p), 1280 x 720 (720p), Slo-mo video 1280 x 720 (720p) at 120 fps | - | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF) | Phase Detect Auto-Focus (PDAF), GIF Creation, 8 different scenes |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 8 Megapixel | LG K40 has better front camera resolution than Xiaomi Redmi Note 4x. |
| Sensor Size (Front) | - | 1/4" | |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Pixel Size (Front) | - | 1.12 μm | |
| Camera Modes (Front) | Real time beauty mode, Beautify with 36 smart beauty profiles | Portrait mode | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 4x has face detection. |
| Light Source (Front) | - | LED flash | |
| Camera Features (Front) | Selfie countdown | - |
| BATTERY AND CHARGING | Xiaomi Redmi Note 4x | LG K40 |
|---|
| Battery Capacity (Battery Size) | 4100 mAh | 3000 mAh | Xiaomi Redmi Note 4x has larger battery capacity than LG K40. |
|---|---|---|---|
| Standby Time | 264 hours | 100 hours | Xiaomi Redmi Note 4x has longer standby time than LG K40. |
| Talk Time | 3060 minutes | 480 minutes | Xiaomi Redmi Note 4x has longer battery life when making calls than LG K40. |
| Run Time Details | Talk (2G): up to 3060 min Playback (video): up to 18 hrs Gaming: up to 15 hrs Standby (4G): up to 264 hrs Playback (audio): up to 162 hrs Reading: up to 22 hrs |
Talk: up to 480 min Standby: up to 100 hrs |
|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Xiaomi Redmi Note 4x | LG K40 |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | 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 8 | - | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS |
| COMMUNICATIONS | Xiaomi Redmi Note 4x | LG K40 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, 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 | |
| 3G UMTS Band | Band 1, Band 2, Band 5, Band 8 | - | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | - | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 3, Band 7, Band 8, Band 20, Band 38 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600 | |
| Wireless Interface | Infrared (IrDA), IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.0 LE | |
| Bluetooth Profiles | HID | - | |
| NFC | - | Yes | LG K40 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi Redmi Note 4x | LG K40 |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | - | |
| Sound Enhancements | - | DTS: X 3D Premium Sound |
| FEATURES | Xiaomi Redmi Note 4x | 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, gyro sensor, hall sensor, distance sensor | Ambient light sensor, proximity sensor | |
| Security Devices | - | Face recognition, fingerprint reader | |
| Additional Phone Features | Infrared remote control | Google Lens, Google Assistant Key, AI Cam |
| OTHERS | Xiaomi Redmi Note 4x | LG K40 |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Power adapter | |
|---|---|---|---|
| Compliant Standards | - | MIL-STD 810G |
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