In depth comparison and review of Xiaomi MI 4i and LG K51S. 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 4i | LG K51S |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | LM-K510EMW | |
Form Factor | Touch | Touch | |
Height | 138.1 mm | 165.2 mm | LG K51S has greater height than Xiaomi MI 4i. |
Width | 69.6 mm | 76.7 mm | LG K51S has greater width than Xiaomi MI 4i. |
Depth | 7.8 mm | 8.26 mm | Xiaomi MI 4i is narrower than Xiaomi MI 4i. |
Weight | 130 g | 194 g | Xiaomi MI 4i is lighter than Xiaomi MI 4i. |
Body Colour | Black | Dark grey | White | Pink | Titan | |
Waterproof (Water-resistant) | - | - | |
SAR Value | 1.29 W/kg | 1.335 W/kg (body), 0.501 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 USB Type-C - 24 pin USB-C |
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SIM Card Type (Size) | Micro SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM |
DISPLAY | Xiaomi MI 4i | LG K51S |
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Display Type | LCD display | LCD display | |
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Display Technology | IPS | IPS | |
Screen Size (Display Size) | 5" | 6.55" | LG K51S has larger screen size than Xiaomi MI 4i. |
Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1600 x 720 pixels | Xiaomi MI 4i has better screen resolution than LG K51S. |
Display Format | Full HD | HD+ | |
Pixel Density | 441 ppi | 268 ppi | Xiaomi MI 4i has better pixel density than LG K51S. |
Aspect Ratio | - | 20:9 | |
Max Brightness | - | 400 cd/m² | |
Colour Depth | 16.7 million colours | - | |
Display Features | - | Reading mode, FullVision display, night mode, hole in display | |
Display Protection (Screen Protector) | Corning Concore Glass | Tempered glass |
PROCESSOR | Xiaomi MI 4i | LG K51S |
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Processor Type (CPU) | Qualcomm Snapdragon 615 | MediaTek | |
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Processor Number | - | MT6765 | |
Clock Speed | 1.7 GHz | 2.3 GHz | LG K51S has higher clock speed than Xiaomi MI 4i. |
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 405 | IMG PowerVR GE8320 |
MEMORY | Xiaomi MI 4i | LG K51S |
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RAM | 2 GB | 3 GB | LG K51S has more RAM than Xiaomi MI 4i. |
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Internal Memory Size (Storage Capacity) | 16 GB | 64 GB | LG K51S has more internal memory than Xiaomi MI 4i. |
User Memory | - | 50.2 GB | |
Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSDXC - up to 2 TB |
CAMERA | Xiaomi MI 4i | LG K51S |
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MAIN CAMERA |
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Number of Main Cameras | 1 | 4 | |
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Sensor Resolution | 13 Megapixel | 32 Megapixel | LG K51S has better camera resolution than Xiaomi MI 4i. |
Lens Aperture | F/2.0 | F/1.8 | LG K51S has better lens aperture than Xiaomi MI 4i. |
Lens Construction | 5-element | - | |
Field of View (FoV) | - | 76.3 degree(s) | |
Focus Adjustment | Automatic | Automatic | |
Minimum Focal Length (Focal Distance) | - | 24 mm | |
Digital Zoom | - | 8x | |
Self-Timer Delay | - | Yes | |
Special Effects | - | HDR | |
HDR Mode | Auto HDR mode | - | |
Camera Modes | Panorama, manual mode | Burst mode, portrait mode, Flowers, Animals, Food, Person, Sunset, Sunrise, City, Landscape | |
Face Recognition (Face ID) | Face detection, smile detection | Face detection | Both phones have face detection. |
White Balance | - | Automatic | |
Light Source | Dual LED flash | LED flash | |
Video Resolutions | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) at 30 fps | |
Camera Features (Functions) | - | Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | - | 5 Megapixel | |
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Lens Type (2nd Camera) | - | Super wide-angle lens | |
Lens Aperture (2nd Camera) | - | F/2.2 | |
Field of View (2nd Camera) | - | 115 degree(s) | |
Minimum Focal Length (2nd Camera) | - | 16 mm |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
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Lens Aperture (3rd Camera) | - | F/2.4 | |
Field of View (3rd Camera) | - | 88.9 degree(s) | |
Camera Functions (3rd Camera) | - | Depth camera |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 2 Megapixel | |
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Lens Aperture (4th Camera) | - | F/2.4 | |
Field of View (4th Camera) | - | 88.6 degree(s) | |
Camera Functions (4th Camera) | - | Macro camera | |
Camera Features (4th Camera) | - | 4cm macro photography |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 5 Megapixel | 13 Megapixel | LG K51S has better front camera resolution than Xiaomi MI 4i. |
Lens Type (Front) | Wide-angle lens | - | |
Lens Aperture (Front) | F/1.8 | - | |
Lens Element Qty (Front) | 5-element | - | |
Camera Modes (Front) | - | Gesture Shot, Selfie portrait | |
Face Recognition (Face ID) | - | Face detection | LG K51S has face detection. |
Camera Features (Front) | - | 17 filters |
BATTERY AND CHARGING | Xiaomi MI 4i | LG K51S |
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Battery Capacity (Battery Size) | 3120 mAh | 4000 mAh | LG K51S has larger battery capacity than Xiaomi MI 4i. |
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Standby Time | - | 100 hours | |
Talk Time | 2100 minutes | 480 minutes | Xiaomi MI 4i has longer battery life when making calls than LG K51S. |
Run Time Details | Talk (WCDMA): up to 2100 min | Talk: up to 480 min Standby: up to 100 hrs |
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Battery Technology | Lithium Ion | Lithium Ion |
CELLULAR | Xiaomi MI 4i | LG K51S |
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Technology | TD-SCDMA / WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | Android 5.0.2 (Lollipop) | Android 9.0 Pie | |
User Interface | MIUI V6 | LG UX 9 | |
Intelligent Assistant | - | Google Assistant | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS |
COMMUNICATIONS | Xiaomi MI 4i | LG K51S |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
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2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
4G LTE Band | Band 3, 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 1800+, 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 | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n | |
Bluetooth | Bluetooth 4.1 | Bluetooth 5.0 BLE | |
Bluetooth Profiles | A2DP, HID | HFP, HSP, OPP, PAN, SPP, GOEP, A2DP, AVRCP, HID, SAP, GAVDP, PBAP, MAP, GATT, HDP, HOGP, ScPP | |
NFC | - | Yes | LG K51S has NFC reader for mobile payments. |
Messaging Services | SMS, MMS | SMS, MMS |
MEDIA | Xiaomi MI 4i | LG K51S |
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Supported Digital Audio Standards | WAV, MP3, FLAC, eAAC+ | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | |
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Supported Digital Video Standards | XviD, MPEG-4, DivX, H.264 | MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4 | |
Sound Enhancements | - | DTS: X 3D Surround Sound |
FEATURES | Xiaomi MI 4i | LG K51S |
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Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
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Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, hall sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass | |
Security Devices | - | Fingerprint reader | |
Additional Phone Features | MIMO technology, Active noise-cancellation | DLNA Certified, Dual microphones, KnockON, QuickMemo+ function, Mini View function, Capture+, EasyHome, Clip Tray, Google Lens, AI Cam, Game Tools, Google Assistant Button |
OTHERS | Xiaomi MI 4i | LG K51S |
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Included Accessories | Power adapter | Power adapter, SIM card removal tool, USB-C cable | |
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Compliant Standards | - | MIL-STD 810G |