Physical features | LG K7 (4G K330) | LG K40 (X420EM) |
Model | K7 (4G K330) | K40 (X420EM) |
Other model names | T-Mobile LG K7 K330 LTE, LG K330, LG M1 | LG K40 LMX420EM NFC Single-sim, LM-X420EM, LG-LMX420EM |
Country or region available |  USA |  (Europe) |
Brand | LG | LG |
Release date | January, 2016 | March, 2019 |
Depth | 8.9 millimeters (0.35 inches) | 8.3 millimeters (0.33 inches) |
Size (width x height) | 72.39 x 143.51 millimeters (2.85 x 5.65 in) | 71.9 x 153 millimeters (2.83 x 6.02 in) |
Weight | 138 grams (4.83 ounces) | 145 grams (5.08 ounces) |
Qwerty physical keyboard | Not supported | Not supported |
Antenna | Internal antenna | Internal antenna |
Build, materials | feature not registered | Plastic body, glass front |
Protection against water and others | Not supported | MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. |
System (OS) | LG K7 (4G K330) | LG K40 (X420EM) |
Operating system | Android 5.1.1 Lollipop | Android 8.1 Oreo |
Firmware update | feature not registered | feature not registered |
Hardware | LG K7 (4G K330) | LG K40 (X420EM) |
Chipset | 32bit - Qualcomm Snapdragon 210 MSM8909 (28nm) | 64bit - MediaTek MT6762 Helio P22 (12nm) |
CPU processor | 1.1Ghz Quad-Core ARM Cortex-A7 | Octa-Core, 2 processors: 2Ghz Quad-Core ARM Cortex-A53 1.5Ghz Quad-Core ARM Cortex-A53 |
GPU graphical controller | Qualcomm Adreno 304 | PowerVR GE8320 650Mhz |
RAM memory | 1.5GB LPDDR3 | 2GB LPDDR3 |
Internal storage | 8GB (4GB available) | 32GB (20GB available) eMMC 5.1 |
External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
Display | LG K7 (4G K330) | LG K40 (X420EM) |
Display type | TFT IPS LCD | TFT IPS LCD |
Screen size | 5" inches | 5.7" inches |
Screen-to-body ratio | ~66.3% (screen-to-body ratio) | ~76.2% (screen-to-body ratio) |
Display resolution | 480x854 pixels | 720x1440 pixels |
Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
Pixel density (dot pitch) | 196 PPI | 282 PPI |
Colors | 16 million | 16 million |
Scratch-resistant glass | Not supported | Not supported |
Display features | feature not registered | feature not registered |
Mobile networks | LG K7 (4G K330) | LG K40 (X420EM) |
Dual-SIM | Not supported | Not supported |
SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
Maximum download/upload | 150/50 Mbps | 300/50 Mbps |
Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
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 850/1700/1900 | UMTS 850/900/1900/2100 |
Primary 4G network | LTE Cat4 700/1700/1900/2100 (Bands 2,4,12) | LTE Cat6 (Bands 1, 3, 5, 7, 8, 20) TD-LTE (Bands 38) |
Primary 5G network | Not supported | Not supported |
Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
Secondary 2G network | Not supported | Not supported |
Secondary 3G network | Not supported | Not supported |
Secondary 4G network | Not supported | Not supported |
Secondary data network | Not supported | Not supported |
Calling | LG K7 (4G K330) | LG K40 (X420EM) |
Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
Speakerphone | Supported | Supported |
Video calling | Supported | Supported |
Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder |
Camera | LG K7 (4G K330) | LG K40 (X420EM) |
Back camera (main camera) | 5 megapixels | 16 megapixels |
Main camera resolution | 2560x1920 pixels | 4608x3456 pixels |
Video recording (primary) | HD (1280x720) 30 fps | Full HD (1920x1080) 30 fps |
Flash | LED flash | LED flash on both cameras |
Focal aperture | feature not registered | f/2.0 (aperture) |
Focal length | feature not registered | feature not registered |
Sensor size | feature not registered | 1/3" inches |
Pixel size | feature not registered | 1µm pixel |
Autofocus | Autofocus | PDAF: phase detection autofocus |
Touch focus | Supported | Supported |
Image stabilization | feature not registered | 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 only main camera | HDR photo on both cameras |
2ª camera | LG K7 (4G K330) | LG K40 (X420EM) |
Front camera (secondary) | 5 megapixels | 8 megapixels |
Front camera resolution | 2560x1920 pixels | 3264x2448 pixels |
Video recording (secondary) | HD (1280x720) | Full HD (1920x1080) |
Front flash | Not supported | LED |
Focal aperture | feature not registered | f/2.0 (aperture) |
Focal length | feature not registered | feature not registered |
Sensor size | feature not registered | feature not registered |
Pixel size | feature not registered | feature not registered |
Multimedia | LG K7 (4G K330) | LG K40 (X420EM) |
Radio | FM | Not supported |
TV | Not supported | Not supported |
Video formats | MP4, H.265, H.264, H.263, XviD | MP4, H.264, H.263, XviD, MKV |
Audio formats | MP3, WAV, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
Connectivity | LG K7 (4G K330) | LG K40 (X420EM) |
USB | MicroUSB 2.0 | MicroUSB 2.0, USB OTG On-The-Go |
TV output | Not supported | Not supported |
Audio output | 3.5mm jack | 3.5mm jack |
Bluetooth | 4.1 + A2DP | 5.0 + A2DP/LE |
WiFi | 802.11 b/g/n (2.4Ghz) | 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO |
DLNA | Not supported | Supported |
NFC | Not supported | Supported |
GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
Infrared port | Not supported | Not supported |
Other functions | LG K7 (4G K330) | LG K40 (X420EM) |
Active noise cancellation | Not supported | Supported |
Vibrating alert | Supported | Supported |
Ringtones | Polyphonic and customized | Polyphonic and customized |
Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
Sensors | Accelerometer Proximity sensor Ambient Light sensor
| Accelerometer Proximity sensor Ambient Light sensor Fingerprint sensor (rear-mounted)
|
Other features | - Colors: Black, White, Gold, Titan - 2.5D Arc Glass - Knock Code, Knock On - Take still shots while recording video - WiFi direct, hotspot | - Colors: Black, Moroccan Blue, Platinum Gray - 18:9 ratio FullVision display - LED notification - DTS-X Surround sound - WiFi direct, hotspot |
Power supply | LG K7 (4G K330) | LG K40 (X420EM) |
Battery | Li-Ion: Lithium-Ion (Removable) | Li-Ion: Lithium-Ion (Non removable) |
Battery capacity | 2045 mAh | 3000 mAh |
Charger, watts | Standard charging | Standard charging |
Talk time autonomy | 660 minutes | 11 hours | 0.5 day | 480 minutes | 8 hours | 0.3 day |
Standby | 18720 minutes | 312 hours | 13 days | 6000 minutes | 100 hours | 4.2 days |
Radiation rate | LG K7 (4G K330) | LG K40 (X420EM) |
SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |