In depth comparison and review of LG K51S and Alcatel 1S (2021). 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 | LG K51S | Alcatel 1S (2021) |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | LM-K510EMW | - | |
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 165.64 mm | Alcatel 1S (2021) has greater height than LG K51S. |
| Width | 76.7 mm | 75.59 mm | LG K51S has greater width than Alcatel 1S (2021). |
| Depth | 8.26 mm | 8.8 mm | LG K51S is narrower than LG K51S. |
| Weight | 194 g | 190 g | Alcatel 1S (2021) is lighter than LG K51S. |
| Body Colour | Pink | Titan | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.335 W/kg (body), 0.501 W/kg (head) | 2.99 W/kg (limb), 1.42 W/kg (body), 0.42 W/kg (head) | |
| Connector Type | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | LG K51S | Alcatel 1S (2021) |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | IPS | |
| Screen Size (Display Size) | 6.55" | 6.52" | LG K51S has larger screen size than Alcatel 1S (2021). |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 1600 x 720 pixels | Both phones have the same screen resolution. |
| Display Format | HD+ | HD+ | |
| Pixel Density | 268 ppi | - | |
| Aspect Ratio | 20:9 | 20:9 | |
| Max Brightness | 400 cd/m² | - | |
| Display Features | Reading mode, FullVision display, night mode, hole in display | 2.5D Glass, Reading mode, Dark mode, Vast Display, One-handed Mode | |
| Display Protection (Screen Protector) | Tempered glass | - |
| PROCESSOR | LG K51S | Alcatel 1S (2021) |
|---|
| Processor Type (CPU) | MediaTek | MediaTek | |
|---|---|---|---|
| Processor Number | MT6765 | MTK6762D | |
| Clock Speed | 2.3 GHz | 1.8 GHz | LG K51S has higher clock speed than Alcatel 1S (2021). |
| 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) | IMG PowerVR GE8320 | IMG GE8320 |
| MEMORY | LG K51S | Alcatel 1S (2021) |
|---|
| RAM | 3 GB | 3 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | LG K51S has more internal memory than Alcatel 1S (2021). |
| User Memory | 50.2 GB | 17 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | microSDHC, microSD, microSDXC - up to 512 GB |
| CAMERA | LG K51S | Alcatel 1S (2021) |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 3 | |
|---|---|---|---|
| Sensor Resolution | 32 Megapixel | 13 Megapixel | LG K51S has better camera resolution than Alcatel 1S (2021). |
| Sensor Size | - | 1/3.06" | |
| Lens Aperture | F/1.8 | F/2.0 | LG K51S has better lens aperture than LG K51S. |
| Lens Construction | - | 5-element | |
| Field of View (FoV) | 76.3 degree(s) | 77.1 degree(s) | Alcatel 1S (2021) has larger lens field of view than LG K51S. |
| Pixel Size | - | 1.12 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 24 mm | - | |
| Digital Zoom | 8x | - | |
| Self-Timer Delay | Yes | - | |
| Special Effects | HDR | HDR | |
| Camera Modes | Burst mode, portrait mode, Flowers, Animals, Food, Person, Sunset, Sunrise, City, Landscape | Panorama, Pro mode, Best Shot, Bokeh Mode, Light Trace | |
| Face Recognition (Face ID) | Face detection | Face tracking | Both phones have face detection. |
| White Balance | Automatic | - | |
| Light Source | LED flash | Single tone LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology | Phase Detect Auto-Focus (PDAF), EIS video stabilisation, AI scene detection, AI Composition, AI Filter, Smart Album |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 5 Megapixel | 2 Megapixel | LG K51S has better second camera resolution than Alcatel 1S (2021). |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/5" | |
| Lens Type (2nd Camera) | Super wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | LG K51S has better second camera lens aperture than LG K51S. |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Field of View (2nd Camera) | 115 degree(s) | 87.3 degree(s) | LG K51S has larger second camera lens field of view than Alcatel 1S (2021). |
| Pixel Size (2nd Camera) | - | 1.12 μm | |
| Minimum Focal Length (2nd Camera) | 16 mm | - | |
| Camera Functions (2nd Camera) | - | Depth camera | |
| Camera Features (2nd Camera) | - | 3-piece lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 2 Megapixel | Both phones have the same third camera resolution. |
|---|---|---|---|
| Sensor Size (3rd Camera) | - | 1/5" | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the third camera. |
| Lens Element Qty (3rd Camera) | - | 3-element | |
| Field of View (3rd Camera) | 88.9 degree(s) | 84 degree(s) | LG K51S has larger third camera lens field of view than Alcatel 1S (2021). |
| Pixel Size (3rd Camera) | - | 1.65 μm | |
| Camera Functions (3rd Camera) | Depth camera | Macro 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) | 13 Megapixel | 5 Megapixel | LG K51S has better front camera resolution than Alcatel 1S (2021). |
| Sensor Size (Front) | - | 1/5" | |
| Lens Aperture (Front) | - | F/2.2 | |
| Field of View (Front) | - | 76 degree(s) | |
| Pixel Size (Front) | - | 1.12 μm | |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | - | Face Beautification | |
| Camera Modes (Front) | Gesture Shot, Selfie portrait | Night mode, Bokeh Mode | |
| Face Recognition (Face ID) | Face detection | Face tracking | Both phones have face detection. |
| Light Source (Front) | - | Display flash | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Front) | 17 filters | - |
| BATTERY AND CHARGING | LG K51S | Alcatel 1S (2021) |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 4000 mAh | Both phones have the same battery capacity. |
|---|---|---|---|
| Recharge Time (Charging Time) | - | 150 min | |
| Standby Time | 100 hours | 512 hours | Alcatel 1S (2021) has longer standby time than LG K51S. |
| Talk Time | 480 minutes | 1920 minutes | Alcatel 1S (2021) has longer battery life when making calls than LG K51S. |
| Run Time Details | Talk: up to 480 min Standby: up to 100 hrs |
Standby (2G): up to 512 hrs Standby (3G): up to 488 hrs Standby (4G): up to 392 hrs Talk (4G): up to 1200 min Talk (2G): up to 1920 min |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | LG K51S | Alcatel 1S (2021) |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 9.0 Pie | Android 11 | |
| User Interface | LG UX 9 | - | |
| Intelligent Assistant | Google Assistant | Google Assistant | |
| Navigation | GPS | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | LG K51S | Alcatel 1S (2021) |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSPA+, 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 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 7, Band 8, Band 20, Band 38 | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600 | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | IEEE 802.11a/b/g/n | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 5.0 | |
| Bluetooth Profiles | 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 | - |
| MEDIA | LG K51S | Alcatel 1S (2021) |
|---|
| Supported Digital Audio Standards | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), AWB, Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4 | MPEG-4, H.263, HEVC, VP8, VP9, H.265, H.264 AVC | |
| Sound Enhancements | DTS: X 3D Surround Sound | - |
| FEATURES | LG K51S | Alcatel 1S (2021) |
|---|
| 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 | Accelerometer, proximity sensor, digital compass, light sensor | |
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader | |
| Security Technology | - | Face Key | |
| Additional Phone Features | DLNA Certified, Dual microphones, KnockON, QuickMemo+ function, Mini View function, Capture+, EasyHome, Clip Tray, Google Lens, AI Cam, Game Tools, Google Assistant Button | Multitasking, HD Voice, dual microphones with noise cancellation, Google Lens, Google Assistant Button |
| OTHERS | LG K51S | Alcatel 1S (2021) |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C cable | USB cable, power adapter, SIM card removal tool, LCD sticker | |
|---|---|---|---|
| Compliant Standards | MIL-STD 810G | - |
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