In depth comparison and review of Alcatel Idol 4S 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 | Alcatel Idol 4S | LG K51S |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | LM-K510EMW | |
| Form Factor | Touch | Touch | |
| Height | 153.9 mm | 165.2 mm | LG K51S has greater height than Alcatel Idol 4S. |
| Width | 75.4 mm | 76.7 mm | LG K51S has greater width than Alcatel Idol 4S. |
| Depth | 7 mm | 8.26 mm | Alcatel Idol 4S is narrower than Alcatel Idol 4S. |
| Weight | 149 g | 194 g | Alcatel Idol 4S is lighter than Alcatel Idol 4S. |
| Body Colour | Dark grey | Pink | Titan | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | - | 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 |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM (SIM1 and SIM2/MicroSD slots) | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | Alcatel Idol 4S | LG K51S |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | AMOLED | IPS | |
| Screen Size (Display Size) | 5.5" | 6.55" | LG K51S has larger screen size than Alcatel Idol 4S. |
| Screen Resolution (Display Resolution) | 2560 x 1440 pixels | 1600 x 720 pixels | Alcatel Idol 4S has better screen resolution than LG K51S. |
| Display Format | QHD | HD+ | |
| Pixel Density | 534 ppi | 268 ppi | Alcatel Idol 4S 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) | Fingerprint-resistant oleophobic coating, Dragontrail (scratch resistant glass), 2.5D Arc Glass | Tempered glass |
| PROCESSOR | Alcatel Idol 4S | LG K51S |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 652 | MediaTek | |
|---|---|---|---|
| Processor Number | MSM8976 | MT6765 | |
| Clock Speed | 1.8 GHz | 2.3 GHz | LG K51S has higher clock speed than Alcatel Idol 4S. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | - | Yes | LG K51S has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 510 | IMG PowerVR GE8320 |
| MEMORY | Alcatel Idol 4S | LG K51S |
|---|
| RAM | 3 GB | 3 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | LG K51S has more internal memory than Alcatel Idol 4S. |
| User Memory | - | 50.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSDXC - up to 2 TB |
| CAMERA | Alcatel Idol 4S | LG K51S |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 16 Megapixel | 32 Megapixel | LG K51S has better camera resolution than Alcatel Idol 4S. |
| Lens Aperture | F/2.0 | F/1.8 | LG K51S has better lens aperture than Alcatel Idol 4S. |
| 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 | Burst mode, portrait mode, Flowers, Animals, Food, Person, Sunset, Sunrise, City, Landscape | |
| Face Recognition (Face ID) | - | Face detection | LG K51S has face detection. |
| White Balance | - | Automatic | |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 3840 x 2160 (4K) | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF) | Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 5 Megapixel | |
|---|---|---|---|
| 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 |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Field of View (3rd Camera) | - | 88.9 degree(s) | |
| Camera Functions (3rd Camera) | - | Depth camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| 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 |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 13 Megapixel | LG K51S has better front camera resolution than Alcatel Idol 4S. |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/2.4 | - | |
| Camera Modes (Front) | - | Gesture Shot, Selfie portrait | |
| Face Recognition (Face ID) | - | Face detection | LG K51S has face detection. |
| Video Resolutions (Front) | 1920 x 1080 (1080p) | - | |
| Camera Features (Front) | - | 17 filters |
| BATTERY AND CHARGING | Alcatel Idol 4S | LG K51S |
|---|
| Battery Capacity (Battery Size) | 3000 mAh | 4000 mAh | LG K51S has larger battery capacity than Alcatel Idol 4S. |
|---|---|---|---|
| Recharge Time (Charging Time) | 100 min | - | |
| Standby Time | 420 hours | 100 hours | Alcatel Idol 4S has longer standby time than LG K51S. |
| Talk Time | 780 minutes | 480 minutes | Alcatel Idol 4S has longer battery life when making calls than LG K51S. |
| Run Time Details | Talk: up to 780 min Standby: up to 420 hrs |
Talk: up to 480 min Standby: up to 100 hrs |
|
| Battery Technology | Lithium Ion | Lithium Ion |
| CELLULAR | Alcatel Idol 4S | LG K51S |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 6.0.1 (Marshmallow) | Android 9.0 Pie | |
| User Interface | - | LG UX 9 | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, A-GPS | GPS |
| COMMUNICATIONS | Alcatel Idol 4S | LG K51S |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, 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 | |
| 4G LTE Band | - | Band 1, Band 3, Band 7, Band 8, Band 20, Band 38 | |
| 4G LTE Frequency | - | 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 4.2 | Bluetooth 5.0 BLE | |
| Bluetooth Profiles | - | HFP, HSP, OPP, PAN, SPP, GOEP, A2DP, AVRCP, HID, SAP, GAVDP, PBAP, MAP, GATT, HDP, HOGP, ScPP | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Alcatel Idol 4S | LG K51S |
|---|
| Supported Digital Audio Standards | WAV, WMA, MP3, AAC + | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | XviD, MPEG-4, H.265 | MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4 | |
| Sound Enhancements | Hi-Fi Sound support | DTS: X 3D Surround Sound |
| FEATURES | Alcatel Idol 4S | LG K51S |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor, digital compass, gyro sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass | |
| Security Devices | - | Fingerprint reader | |
| Additional Phone Features | Radio Data Service (RDS), HD Voice, Dual noise reduction microphones | DLNA Certified, Dual microphones, KnockON, QuickMemo+ function, Mini View function, Capture+, EasyHome, Clip Tray, Google Lens, AI Cam, Game Tools, Google Assistant Button |
| OTHERS | Alcatel Idol 4S | LG K51S |
|---|
| Included Accessories | Stereo headset, USB cable, power adapter, SIM card removal tool, Virtual Reality Googles | Power adapter, SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | - | MIL-STD 810G |
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