Detailed comparison and review of LG K4 and OPPO A57s. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | LG K4 | OPPO A57s |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | M160 (2017) | CPH2385 | |
| Form Factor | Touch | Touch | |
| Height | 144.7 mm | 163.74 mm | OPPO A57s has greater height than LG K4. |
| Width | 72.6 mm | 75.03 mm | OPPO A57s has greater width than LG K4. |
| Depth | 7.9 mm | 7.99 mm | LG K4 is narrower than LG K4. |
| Weight | 138 g | 187 g | LG K4 is lighter than LG K4. |
| Body Colour | Black | Starry black | |
| Body Material | - | Composite polymer | |
| Waterproof (Water-resistant) | - | - | OPPO A57s is waterproof. |
| IP rating | - | IPX4 | |
| SAR Value | 1.27 W/kg (body), 0.556 W/kg (head) | 1.015 W/kg (body), 0.957 W/kg (head), 2.399 W/kg (limb) | |
| Integrated Components | FM radio | - | |
| Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | LG K4 | OPPO A57s |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | LCD | |
| Screen Size (Display Size) | 5" | 6.56" | OPPO A57s has larger screen size than LG K4. |
| Screen Resolution (Display Resolution) | 480 x 854 pixels | 1612 x 720 pixels | OPPO A57s has better screen resolution than LG K4. |
| Display Format | - | HD+ | |
| Pixel Density | 195 ppi | 269 ppi | OPPO A57s has better pixel density than LG K4. |
| Aspect Ratio | - | 20.1:9 | |
| Max Brightness | 350 cd/m² | 600 cd/m² | OPPO A57s has better display brightness than LG K4. |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Contrast Ratio | - | 1500:1 | |
| Display Refresh Rate | - | 60 Hz | |
| Touch Sampling Rate | - | 60 Hz | |
| Display Features | - | Night mode, Eye comfort mode, 96% NTSC | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | Panda Glass MN228 |
| PROCESSOR | LG K4 | OPPO A57s |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon | MediaTek Helio G35 | |
|---|---|---|---|
| Clock Speed | 1.1 GHz | 2.3 GHz | OPPO A57s has higher clock speed than LG K4. |
| Processor Core Qty | Quad-core | 8-core | OPPO A57s has higher processor core quantity than LG K4. |
| Graphics System (GPU) | Qualcomm ADRENO 304 | IMG GE8320 |
| MEMORY | LG K4 | OPPO A57s |
|---|
| RAM | 1 GB | LPDDR4X SDRAM - 4 GB | OPPO A57s has more RAM than LG K4. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 8 GB | 128 GB | OPPO A57s has more internal memory than LG K4. |
| Memory Interface | - | eMMC 5.1 | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC - up to 32 GB | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | LG K4 | OPPO A57s |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 2 | |
|---|---|---|---|
| Sensor Resolution | 5 Megapixel | 50 Megapixel | OPPO A57s has better camera resolution than LG K4. |
| Sensor Size | - | 1/2.76" | |
| Sensor Name | - | Samsung S5KJN1 | |
| Lens Aperture | F/2.6 | F/1.8 | OPPO A57s has better lens aperture than LG K4. |
| Lens Construction | - | 5-element | |
| Field of View (FoV) | - | 77 degree(s) | |
| Pixel Size | - | 0.64 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | - | 27 mm | |
| Digital Zoom | 4x | 5x | OPPO A57s has better digital zoom than LG K4. |
| Special Effects | HDR | Stickers | |
| Camera Modes | Timer mode, Cheese Shot | Panorama, Time-lapse mode, Pro mode, Portrait, Night | |
| Face Recognition (Face ID) | Face recognition | - | LG K4 has face detection. |
| White Balance | Automatic | - | |
| Light Source | LED light | LED flash | |
| Video Resolutions | 1280 x 720 (720p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Pause & Resume Recording, geotagging | - |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/5" | |
| Lens Aperture (2nd Camera) | - | F/2.4 | |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Field of View (2nd Camera) | - | 89 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.75 μm | |
| Minimum Focal Length (2nd Camera) | - | 21 mm | |
| Camera Functions (2nd Camera) | - | Monochrome |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 8 Megapixel | OPPO A57s has better front camera resolution than LG K4. |
| Sensor Size (Front) | - | 1/1.4" | |
| Sensor Name (Front) | - | Omnivision OV08D10 sensor | |
| Lens Aperture (Front) | F/2.7 | F/2.0 | OPPO A57s has better front lens aperture than LG K4. |
| Lens Element Qty (Front) | - | 5-element | |
| Field of View (Front) | - | 79 degree(s) | |
| Pixel Size (Front) | - | 1.12 μm | |
| Focus Adjustment | - | Focus free | |
| Min Focal Length (Front) | - | 26 mm | |
| Special Effects (Front) | - | Stickers | |
| Camera Modes (Front) | Gesture Shot | Panorama, Time-lapse mode, Portrait | |
| Face Recognition (Face ID) | Face recognition | - | LG K4 has face detection. |
| Video Resolutions (Front) | 1280 x 720 (720p) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps |
| BATTERY AND CHARGING | LG K4 | OPPO A57s |
|---|
| Battery Capacity (Battery Size) | 2500 mAh | 5000 mAh | OPPO A57s has larger battery capacity than LG K4. |
|---|---|---|---|
| Fast Charging Technology | - | SuperVOOC Flash Charge technology | OPPO A57s has fast charging technology. |
| Standby Time | 100 hours | 304 hours | OPPO A57s has longer standby time than LG K4. |
| Talk Time | 240 minutes | 1800 minutes | OPPO A57s has longer battery life when making calls than LG K4. |
| Run Time Details | Talk: up to 240 min Standby: up to 100 hrs |
Talk: up to 1800 min Standby (4G): up to 304 hrs Playback (video): up to 13.4 hrs Playback (audio (via speakers, 50% volume)): up to 40 hrs |
| CELLULAR | LG K4 | OPPO A57s |
|---|
| 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) | ColorOS 12.1 (based on Android 12) | |
| User Interface | LG UX 5.0 | - | |
| Navigation | GPS | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | LG K4 | OPPO A57s |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | VoLTE, FDD-LTE, TDD-LTE, VoWiFi | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | - | Band 1, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 850, 900 | |
| 4G LTE Band | - | 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 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.3 BLE | |
| Bluetooth Profiles | HFP, HSP, OPP, PAN, SPP, GAP, GOEP, A2DP, AVRCP, HID, SAP, AVCTP, AVDTP, GAVDP, PBAP, MAP, RFCOMM, DID, SDP, OBEX, HOGP | - | |
| NFC | - | Yes | OPPO A57s has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | LG K4 | OPPO A57s |
|---|
| Supported Digital Audio Standards | WMA, AAC, PCM, Ogg Vorbis, AMR, MP3, FLAC, AAC +, eAAC+, MIDI, ALAC, OPUS | WAV, WMA, AAC, AMR, MP3, FLAC, AC-3, OGG, MIDI, APE (Monkey's Audio), LDAC, OPUS, MID, SBC, apt-X HD | |
|---|---|---|---|
| Supported Digital Video Standards | AVC, M-JPEG, XviD, MPEG-4, H.264, H.263, HEVC, VP8, VP9, Theora | MKV, FLV, AVI, MOV, ASF, 3GP, M4V, TS, M2TS, WebM, MP4 | |
| Sound Enhancements | - | Dirac sound technologies |
| FEATURES | LG K4 | OPPO A57s |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | - | |
|---|---|---|---|
| Sensors | Ambient light sensor, proximity sensor, motion sensor | Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor | |
| Security Devices | - | Face recognition, fingerprint reader (side) | |
| Additional Phone Features | Radio Data Service (RDS), QuickMemo function, KnockON, Capture Plus function, Knock Code function, Alarm Clock, Easy Home Clip Tray, Screen zooming | Noise reduction microphone, Fast Charging, 3 years of Security Updates, 2 years of OS upgrades, Cooling Graphite Thermal Pad, Reverse charging, super-linear dual speakers |
| OTHERS | LG K4 | OPPO A57s |
|---|
| Included Accessories | USB cable, power adapter | SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter | |
|---|---|---|---|
| Compliant Standards | - | IPX4 |
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