Lenovo Legion Duel 2 (256GB) vs LG K40 (X420EMW)
Side by side comparison between Lenovo Legion Duel 2 vs LG K40 phones, differences, pros, cons and full specifications. What's the better?
,
6.92"
AMOLED
AMOLED
1080x2460
64
MP
MP
44mp
12GB
RAM
RAM
Octa-core
5500
mAh
mAh
(Non 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? Lenovo Legion Duel 2 (256GB)
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!
27 Advantages 
7 Advantages | 21 Common items in both devices |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| HDR photo/video on both cameras / HDR photo on both cameras |
| Capacitive |
| Multitouch |
| +14 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 | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Model | Legion Duel 2 (256GB) | K40 (X420EMW) |
| Other model names | Lenovo Legion Phone Duel 2 | LG K40 LMX420EMW NFC Dual-sim, LM-X420EMW, LG-LMX420EMW |
| Country or region available |  (Global, International) |  (Global, International), (Europe) |
| Brand | Lenovo | LG |
| Release date | 5/10/2021, Announced: 4/8/2021 | 3/31/2019 |
| Depth | 9.9 millimeters (0.39 inches) | 8.3 millimeters (0.33 inches) |
| Size (width x height) | 78.5 x 176 millimeters (3.09 x 6.93 in) | 71.9 x 153 millimeters (2.83 x 6.02 in) |
| Weight | 259 grams (9.07 ounces) | 145 grams (5.08 ounces) |
| Build, materials | Aluminum frame, glass front/back Back: RGB LED light panel | 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 | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Display type | AMOLED | TFT IPS LCD |
| Screen size | 6.92" inches | 5.7" inches |
| Screen-to-body ratio | ~82.3% (screen-to-body ratio) | ~76.2% (screen-to-body ratio) |
| Display resolution | 1080x2460 pixels | 720x1440 pixels |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 388 PPI | 282 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 5 | Not supported |
| Refresh rate | 144Hz | feature not registered |
| Display features | 1300nits[peak] HDR10+ 111% DCI-P3 Touch Sampling Rate: 720Hz | feature not registered |
🤖 Operating System | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| System version | Android 11 | Android 8.1 Oreo |
| Firmware update | feature not registered | feature not registered |
| User Interface | ZUI 12.5 | feature not registered |
⚙️ Processor | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Chipset | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) | 64bit: MediaTek Helio P22 (MT6762) (12nm) |
| CPU | Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-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 660 (840MHz) | PowerVR GE8320 (650MHz) |
| Performance (benchmark) | AnTuTu: 809642 (v9) | feature not registered |
💽 Memory and storage | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| RAM memory | 12GB LPDDR5 | 2GB LPDDR3 |
| Internal storage | 256GB (218GB available) UFS 3.1 | 32GB (20GB available) eMMC 5.1 |
| External storage | Not supported | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 3000/1024 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 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 | CDMA 800/1900, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 32) TD-LTE (34, 38, 39, 40, 41, 42, 43) VoLTE | LTE Cat6 (Bands 1, 3, 5, 7, 8, 20) TD-LTE (Bands 38) |
| Primary 5G network | SA/NSA/Sub6 (1, 2, 3, 7, 8, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79) | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 32) TD-LTE (34, 38, 39, 40, 41, 42, 43) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE |
📷 Camera | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Back camera (main camera) | (dual camera) 64 megapixels 16MP ultrawide f/2.2123°16mm1.0µm | 16 megapixels |
| Main camera resolution | 10120x6328 pixels | 4608x3456 pixels |
| Video recording (primary) | 8K UHD (7680x4320) 24 fps | Full HD (1920x1080) 30 fps |
| Flash | Dual-LED flash | LED flash on both cameras |
| Focal aperture | f/1.9 (aperture) | f/2.0 (aperture) |
| Focal length | 25mm (lens) | feature not registered |
| Sensor size | 1/1.32" inches | 1/3" inches |
| Pixel size | 1µm pixel | 1µm pixel |
| Autofocus | PDAF: phase detection 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 | Supported | Not supported |
| HDR | HDR photo/video on both cameras | HDR photo on both cameras |
| Camera extras | 8K@24fps 4K@30/60fps 1080p@30/60fps 1080p@240fps (slow motion) HDR10+ | feature not registered |
📸 Front camera | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Front camera (secondary) | 44 megapixels *Motorized pop-up camera (slider) | 8 megapixels |
| Front camera resolution | 7680x5720 pixels | 3264x2448 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
| Front flash | Not supported | LED |
| Focal aperture | f/2.0 (aperture) | f/2.0 (aperture) |
| Focal length | 24mm (lens) | feature not registered |
| Sensor size | 1/2.65" inches | feature not registered |
| Pixel size | 1µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Loudspeaker | Stereo sound with dual speakers Dolby Atmos | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | Not supported |
| 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 | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | Type-C reversible connector | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.2 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS | A-GPS, GeoTagging |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Fingerprint sensor (rear-mounted) Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 5500 mAh | 3000 mAh |
| Charger, watts | 90W Wired fast charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | feature not registered | 8 hours |
| Standby | feature not registered | 100 hours (4.2 days) |
➕ Other features | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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: Ultimate Black, Titanium White • Built-in two cooling fans • Gaming triggers: 6 pressure sensitive zones: 4 ultrasonic buttons (top), 2 capacitive sliding buttons (back) | • Colors: Black, Moroccan Blue, Platinum Gray • 18:9 ratio FullVision display • LED notification • DTS-X Surround sound |
☢️ Radiation rate | ||
| Lenovo Legion Duel 2 (256GB) | LG K40 (X420EMW) | |
| 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 |