In depth comparison and review of LG K51S and LG Ultimate 2. 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 | LG Ultimate 2 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | LM-K510EMW | - | |
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 127.3 mm | LG K51S has greater height than LG Ultimate 2. |
| Width | 76.7 mm | 66.8 mm | LG K51S has greater width than LG Ultimate 2. |
| Depth | 8.26 mm | 9.7 mm | LG K51S is narrower than LG K51S. |
| Weight | 194 g | 128 g | LG Ultimate 2 is lighter than LG K51S. |
| Body Colour | Pink | Titan | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.335 W/kg (body), 0.501 W/kg (head) | 1.2 W/kg (body), 1.14 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 | - | |
| SIM Card Qty | Dual-SIM | - |
| DISPLAY | LG K51S | LG Ultimate 2 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | IPS | |
| Screen Size (Display Size) | 6.55" | 4.5" | LG K51S has larger screen size than LG Ultimate 2. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 800 x 480 pixels | LG K51S has better screen resolution than LG Ultimate 2. |
| Display Format | HD+ | - | |
| Pixel Density | 268 ppi | - | |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | 400 cd/m² | - | |
| Display Features | Reading mode, FullVision display, night mode, hole in display | - | |
| Display Protection (Screen Protector) | Tempered glass | Corning Gorilla Glass (scratch resistant glass) |
| PROCESSOR | LG K51S | LG Ultimate 2 |
|---|
| Processor Type (CPU) | MediaTek | Qualcomm Snapdragon 200 | |
|---|---|---|---|
| Processor Number | MT6765 | - | |
| Clock Speed | 2.3 GHz | 1.2 GHz | LG K51S has higher clock speed than LG Ultimate 2. |
| Processor Core Qty | 8-core | Dual-core | LG K51S has higher processor core quantity than LG Ultimate 2. |
| 64-bit Architecture | Yes | - | LG K51S has 64-bit architecture. |
| Graphics System (GPU) | IMG PowerVR GE8320 | - |
| MEMORY | LG K51S | LG Ultimate 2 |
|---|
| RAM | 3 GB | - | |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 8 GB | LG K51S has more internal memory than LG Ultimate 2. |
| User Memory | 50.2 GB | 4.73 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | microSDHC - up to 32 GB |
| CAMERA | LG K51S | LG Ultimate 2 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 1 | |
|---|---|---|---|
| Sensor Resolution | 32 Megapixel | 5 Megapixel | LG K51S has better camera resolution than LG Ultimate 2. |
| Lens Aperture | F/1.8 | - | |
| Field of View (FoV) | 76.3 degree(s) | - | |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 24 mm | - | |
| Digital Zoom | 8x | 4x | LG K51S has better digital zoom than LG Ultimate 2. |
| Self-Timer Delay | Yes | - | |
| Special Effects | HDR | - | |
| Camera Modes | Burst mode, portrait mode, Flowers, Animals, Food, Person, Sunset, Sunrise, City, Landscape | Live Shot, Shot mode | |
| Face Recognition (Face ID) | Face detection | - | LG K51S has face detection. |
| White Balance | Automatic | - | |
| Light Source | LED flash | LED light | |
| Still Image Resolutions | - | 2560 x 1920 | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 800 x 480 | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology | Cheese Shutter function |
| 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) | 13 Megapixel | 1.3 Megapixel | LG K51S has better front camera resolution than LG Ultimate 2. |
| Camera Modes (Front) | Gesture Shot, Selfie portrait | - | |
| Face Recognition (Face ID) | Face detection | - | LG K51S has face detection. |
| Video Resolutions (Front) | - | 854 x 480 (480p) | |
| Camera Features (Front) | 17 filters | - |
| BATTERY AND CHARGING | LG K51S | LG Ultimate 2 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 2100 mAh | LG K51S has larger battery capacity than LG Ultimate 2. |
|---|---|---|---|
| Standby Time | 100 hours | 216 hours | LG Ultimate 2 has longer standby time than LG K51S. |
| Talk Time | 480 minutes | 720 minutes | LG Ultimate 2 has longer battery life when making calls than LG K51S. |
| Run Time Details | Talk: up to 480 min Standby: up to 100 hrs |
Talk (CDMA): up to 720 min Standby (CDMA): up to 216 hrs |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | LG K51S | LG Ultimate 2 |
|---|
| Technology | WCDMA (UMTS) / GSM | CDMA2000 1X | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 3G | LG K51S has more advanced generation mobile network. |
| Operating System | Android 9.0 Pie | Android 4.4 (KitKat) | |
| User Interface | LG UX 9 | - | |
| Intelligent Assistant | Google Assistant | - | |
| Navigation | GPS | GPS |
| COMMUNICATIONS | LG K51S | LG Ultimate 2 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | EV-DO | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 800 CDMA2000 1X, 1900 CDMA2000 1X | |
| 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 | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 4.0 | |
| 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 | SMS, MMS |
| MEDIA | LG K51S | LG Ultimate 2 |
|---|
| Supported Digital Audio Standards | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | WAV, WMA, AAC, AMR, MP3, FLAC, AAC +, OGG, eAAC+, MIDI, M4A | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4 | MPEG-4, 3GP, 3G2 | |
| Sound Enhancements | DTS: X 3D Surround Sound | - |
| FEATURES | LG K51S | LG Ultimate 2 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, call timer, conference call, flight mode, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass | - | |
| Security Devices | Fingerprint reader | - | |
| 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 | QuickMemo function, QSlide function, Guest Mode function, KnockON, Clip Tray function, Capture Plus function, Knock Code function, Privacy Keeper |
| OTHERS | LG K51S | LG Ultimate 2 |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C cable | USB cable | |
|---|---|---|---|
| Compliant Standards | MIL-STD 810G | - |
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