LG Optimus 4G (P935) vs LG K40 (X420HM)
Side by side comparison between LG Optimus 4G vs LG K40 phones, differences, pros, cons and full specifications. What's the better?
,
4.5"
IPS
IPS
720x1280
8
MP
MP
1.3mp
1GB
RAM
RAM
Dual-core
1830
mAh
mAh
(Removable)
vs
5.7"
IPS
IPS
720x1440
16
MP
MP
8mp
2GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Non removable)
What's the better phone? LG K40 (X420HM)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
5 Advantages 
20 Advantages | 20 Common items in both devices |
| Plastic body, glass front |
| TFT IPS LCD |
| 16 million |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| Full HD (1920x1080) |
| +13 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Change model | ||
| Model | Optimus 4G (P935) | K40 (X420HM) |
| Other model names | LG Optimus LTE P935 for Bell Canada, LG Optimus 4G P930-V20e | LG K40 LMX420HM, LM-X420HM, LG-LMX420HM |
| Country or region available |  USA |   (Latin America), Colombia |
| Brand | LG | LG |
| Release date | 11/1/2011 | 3/31/2019 |
| Depth | 10.5 millimeters (0.41 inches) | 8.3 millimeters (0.33 inches) |
| Size (width x height) | 67.9 x 133.9 millimeters (2.67 x 5.27 in) | 71.9 x 153 millimeters (2.83 x 6.02 in) |
| Weight | 135 grams (4.73 ounces) | 150 grams (5.25 ounces) |
| Build, materials | Plastic body, glass front | 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. |
📲 Display | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 4.5" inches | 5.7" inches |
| Screen-to-body ratio | ~61.4% (screen-to-body ratio) | ~76.2% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 720x1440 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 326 PPI | 282 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| System version | Android 2.3.5 Gingerbread | Android 8.1 Oreo |
| Firmware update | Android 4.0.4 Ice Cream Sandwich ICS | feature not registered |
| User Interface | LG Optimus 2.0 Gesture UI | feature not registered |
⚙️ Processor | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Chipset | 32bit: Qualcomm Snapdragon S3 (APQ8060) (45nm) | 64bit: MediaTek Helio P22 (MT6762) (12nm) |
| CPU | Dual-core, 1 processor: 2x 1.5GHz Scorpion (Dual-core) | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 220 (266MHz) | PowerVR GE8320 (650MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| RAM memory | 1GB LPDDR2 | 2GB LPDDR3 |
| Internal storage | 2GB (1GB available) | 32GB (20GB available) eMMC 5.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 75/25 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse 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 850/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE 700/1700 | LTE Cat6 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 28, 66) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, 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 |
📷 Camera | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Back camera (main camera) | 8 megapixels | 16 megapixels |
| Main camera resolution | 3264x2448 pixels | 4608x3456 pixels |
| Video recording (primary) | Full HD (1920x1080) | 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 | 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 | Not supported | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Front camera (secondary) | 1.3 megapixels | 8 megapixels |
| Front camera resolution | 1280x1024 pixels | 3264x2448 pixels |
| Video recording (secondary) | Not supported | 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 |
🔉 Sound and multimedia | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, WMV | MP4, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Micro-B USB MHL | Not supported |
| Bluetooth | 3.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Fingerprint sensor (rear-mounted) Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 1830 mAh | 3000 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 3 hours | 8 hours |
| Standby | 252 hours (10.5 days) | 100 hours (4.2 days) |
➕ Other features | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder |
| Messaging | SMS (Swype), 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, Flash player | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • 8GB microSD included Bell Mobile TV / radio Java framework | • Colors: Black, Moroccan Blue, Platinum Gray • 18:9 ratio FullVision display • LED notification • DTS-X Surround sound |
☢️ Radiation rate | ||
| LG Optimus 4G (P935) | LG K40 (X420HM) | |
| 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 |