LG K40 (X420EMW) vs Asus Zenfone 3 (5.2 ZE520KL 64GB)
Side by side comparison between LG K40 vs Asus Zenfone 3 phones, differences, pros, cons and full specifications. What's the better?
,
5.7"
IPS
IPS
720x1440
16
MP
MP
8mp
2GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Non removable)
vs
5.2"
IPS+
IPS+
1080x1920
16
MP
MP
8mp
4GB
RAM
RAM
Octa-core
2650
mAh
mAh
(Non removable)
What's the better phone? Asus Zenfone 3 (5.2 ZE520KL 64GB)
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!
11 Advantages 
15 Advantages | 27 Common items in both devices |
| eMMC 5.1 |
| TFT IPS LCD / TFT Super IPS+ |
| 16 million |
| (back) 16MP |
| Only digital zoom |
| PDAF: phase detection autofocus / LDAF/PDAF: laser/phase detection autofocus |
| HDR photo on both cameras |
| +20 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 K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Model | K40 (X420EMW) | Zenfone 3 (5.2 ZE520KL 64GB) |
| Other model names | LG K40 LMX420EMW NFC Dual-sim, LM-X420EMW, LG-LMX420EMW | Zenfone 3 ZE520KL 4GB/64GB 5.2" Dual-SIM |
| Country or region available |   (Global, International), (Europe) |     (Europe), (Global, International), Hong Kong, Japan, Singapore, Taiwan |
| Brand | LG | Asus |
| Release date | 3/31/2019 | 7/12/2016 |
| Depth | 8.3 millimeters (0.33 inches) | 7.7 millimeters (0.3 inches) |
| Size (width x height) | 71.9 x 153 millimeters (2.83 x 6.02 in) | 73.98 x 146.87 millimeters (2.91 x 5.78 in) |
| Weight | 145 grams (5.08 ounces) | 144 grams (5.04 ounces) |
| Build, materials | Plastic body, glass front | Aluminum body, glass front, plastic back |
| Protection against water and others | MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | Not supported |
📲 Display | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Display type | TFT IPS LCD | TFT Super IPS+ |
| Screen size | 5.7" inches | 5.2" inches |
| Screen-to-body ratio | ~76.2% (screen-to-body ratio) | ~68.6% (screen-to-body ratio) |
| Display resolution | 720x1440 pixels | 1080x1920 pixels (16:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 282 PPI | 424 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 3 |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | 2.5D glass |
🤖 Operating System | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| System version | Android 8.1 Oreo | Android 6.0.1 Marshmallow |
| Firmware update | feature not registered | Android 8.0 Oreo |
| User Interface | feature not registered | ZenUI 3.0 |
⚙️ Processor | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Chipset | 64bit: MediaTek Helio P22 (MT6762) (12nm) | 64bit: Qualcomm Snapdragon 625 (MSM8953) (14nm) |
| CPU | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) | Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core) |
| GPU graphical controller | PowerVR GE8320 (650MHz) | Qualcomm Adreno 506 (650MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| RAM memory | 2GB LPDDR3 | 4GB LPDDR3 |
| Internal storage | 32GB (20GB available) eMMC 5.1 | 64GB (55GB available) eMMC 5.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) micro-SIM (3FF) and nano-SIM (4FF) |
| Maximum Download / Upload | 300/50 Mbps | 150/50 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 850/900/1900/2100 | Global: UMTS 850/900/1900/2100 Taiwan: UMTS 800/850/900/1900/2100 |
| Primary 4G network | LTE Cat6 (Bands 1, 3, 5, 7, 8, 20) TD-LTE (Bands 38) | Global: LTE Cat4 (1, 2, 3, 5, 7, 8, 20) Taiwan: LTE Cat6 (1, 2, 3, 5, 7, 8, 18, 19, 26, 28) TD-LTE (38, 39, 40, 41) |
| 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+, TD-LTE, LTE |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Global: UMTS 850/900/1900/2100 Taiwan: UMTS 800/850/900/1900/2100 |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
📷 Camera | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Back camera (main camera) | 16 megapixels | 16 megapixels |
| Main camera resolution | 4608x3456 pixels | 4608x3456 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash on both cameras | Dual-LED flash |
| Focal aperture | f/2.0 (aperture) | f/2.0 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/3" inches | feature not registered |
| Pixel size | 1µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | LDAF/PDAF: laser/phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | OIS (4-axis): Optical 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 on both cameras |
| Camera extras | feature not registered | 4K@30fps 1080p@30/60fps |
📸 Front camera | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Front camera (secondary) | 8 megapixels | 8 megapixels |
| Front camera resolution | 3264x2448 pixels | 3264x2448 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | LED | Not supported |
| Focal aperture | f/2.0 (aperture) | 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 K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Loudspeaker | Supported | Mono sound (not stereo) 24-bit/192kHz |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, XviD, MKV | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| USB | MicroUSB 2.0, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 5.0 + A2DP/LE | 4.2 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Sensors | Accelerometer Ambient light sensor Fingerprint sensor (rear-mounted) Proximity sensor | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 3000 mAh | 2650 mAh |
| Charger, watts | Wired charging | 10W (5V/2A) Wired charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 8 hours | feature not registered |
| Standby | 100 hours (4.2 days) | feature not registered |
➕ Other features | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder, Voice commands |
| 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: Black, Moroccan Blue, Platinum Gray • 18:9 ratio FullVision display • LED notification • DTS-X Surround sound | • Colors: Sapphire Black, Moonlight White, Shimmer Gold |
☢️ Radiation rate | ||
| LG K40 (X420EMW) | Asus Zenfone 3 (5.2 ZE520KL 64GB) | |
| 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 |