📱 Model features |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Model | K50S (X540ZMW) | Twist 2 (S512) |
| Other model names | LG K50s LM-X540ZMW, LMX540ZMW | Positivo Twist 2 S512 (Android Go), Positivo S512 |
| Country or region available | 
Taiwan | 
Brazil |
| Brand | LG | Positivo |
| Release date | 9/1/2019 | 4/1/2019 |
| Depth | 8.2 millimeters (0.32 inches) | 9.5 millimeters (0.37 inches) |
| Size (width x height) | 77.5 x 165.8 millimeters (3.05 x 6.53 in) | 72 x 143 millimeters (2.83 x 5.63 in) |
| Weight | 194 grams (6.79 ounces) | 160 grams (5.6 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | Not supported |
🤖 Operating System |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| System version | Android 9.0 Pie | Android 8.1 Oreo |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Chipset | 64bit: MediaTek Helio P22 (MT6762) (12nm) | 32bit: Unisoc Spreadtrum SC7731E (28nm) |
| CPU | Octa-core, 2 processors:
4x 2GHz ARM Cortex-A53 (Quad-core)
4x 1.5GHz ARM Cortex-A53 (Quad-core) | Quad-core, 1 processor:
4x 1.3GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | PowerVR GE8320 (650MHz) | ARM Mali-T820 MP1 (600MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| RAM memory | 3GB LPDDR3 | 1GB LPDDR |
| Internal storage | 32GB (18GB available)
eMMC 5.1 | 16GB (10GB available) |
| External storage | Until 1TB microSD, microSDXC
(dedicated slot) | Until 32GB microSD, microSDXC
(dedicated slot) |
📲 Display |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Display type | TFT IPS LCD | TFT LCD |
| Screen size | 6.5" inches | 5.34" inches |
| Screen-to-body ratio | ~82.1% (screen-to-body ratio) | ~71.5% (screen-to-body ratio) |
| Display resolution | 720x1520 pixels (19:9) | 480x960 pixels (18:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 259 PPI | 201 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | Not supported |
📶 Mobile networks |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card
(dedicated slot) | Dual-SIM Standby - Call active on one sim card
(dedicated slot) |
| SIM card | 2 slots (Dual-SIM)
nano-SIM (4FF) | 2 slots (Dual-SIM)
micro-SIM (3FF) |
| Maximum Download / Upload | 300/50 Mbps | 14.4/5.76 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G |
| Frequency, bands | Expand band detailsCollapse details |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1900/2100 | UMTS 850/2100 |
| Primary 4G network | LTE Cat6 (1, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 39, 40, 41) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | GPRS, EDGE |
📷 Camera |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Back camera (main camera) | (triple camera)
13 megapixels
5MP ultrawidef/2.21.12μm115°
2MP depthf/2.41.75μm85° | 8 megapixels |
| Main camera resolution | 4128x3096 pixels | 3264x2448 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | HD (1280x720) 30 fps |
| Flash | LED flash | LED flash on both cameras |
| Focal aperture | f/2.2 (aperture) | f/2.2 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Front camera (secondary) | 13 megapixels | 5 megapixels |
| Front camera resolution | 4128x3096 pixels | 2560x1920 pixels |
| Video recording (secondary) | Full HD (1920x1080) | HD (1280x720) |
| Front flash | Not supported | LED |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 2.1 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot | 802.11 b/g/n (2.4GHz) |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Sensors | Accelerometer
Ambient Light sensor
Face unlock
Fingerprint sensor (rear-mounted)
Proximity sensor | Accelerometer
Ambient Light sensor
Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Battery type | LiPo: Li-Ion polymer (Non removable) | Li-Ion: Lithium-Ion (Removable) |
| Battery capacity | 4000 mAh | 2500 mAh |
| Charger, watts | 6W (5V/1.2A) Wired charging | Wired charging |
| Wireless charging | feature not registered | Not supported |
| Talk time autonomy | 18 hours | feature not registered |
| Standby | 504 hours (21 days) | feature not registered |
➕ Other features |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Aurora Black, Moroccan Blue
• DTS:X 3D surround sound
• Eco Playback | • Colors: Black, Gold, Aurora (purple/blue)
• Android Go Edition
• Screen protector included
• Extra case included
• WiFi hotspot |
☢️ Radiation rate |
| LG K50S (X540ZMW) | Positivo Twist 2 (S512) |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.4W/kg (head), 0.54W/kg (body) |