Lenovo Vibe Z2 Pro (K920) vs LG K4 (K121)
Side by side comparison between Lenovo Vibe Z2 Pro vs LG K4 phones, differences, pros, cons and full specifications. What's the better?
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6"
IPS
IPS
1440x2560
16
MP
MP
5mp
3GB
RAM
RAM
Quad-core
4000
mAh
mAh
(Non removable)
vs
What's the better phone? Lenovo Vibe Z2 Pro (K920)
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!
20 Advantages 
5 Advantages | 20 Common items in both devices |
| TFT IPS LCD |
| 16 million |
| Only digital zoom |
| Autofocus |
| 4G LTE-A / 4G LTE |
| 150 Mbps |
| Capacitive |
| +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 | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Change model | ||
| Model | Vibe Z2 Pro (K920) | LG K4 (K121) |
| Other model names | Phablet Lenovo K920 Vibe Z2 Pro LTE-A | (Bell, Rogers, Telus) LG K4 K121, LGK121 |
| Country or region available | feature not registered |  Canada |
| Brand | Lenovo | LG |
| Release date | 9/1/2014 | 2/1/2016 |
| Depth | 7.7 millimeters (0.3 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 81.3 x 156 millimeters (3.2 x 6.14 in) | 66.7 x 131.9 millimeters (2.63 x 5.19 in) |
| Weight | 179 grams (6.27 ounces) | 113 grams (3.96 ounces) |
| Build, materials | feature not registered | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 6" inches | 4.5" inches |
| Screen-to-body ratio | ~78.3% (screen-to-body ratio) | ~63.4% (screen-to-body ratio) |
| Display resolution | 1440x2560 pixels | 480x854 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 490 PPI | 218 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| System version | Android 4.4.2 KitKat | Android 5.1.1 Lollipop |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Chipset | 32bit: Qualcomm Snapdragon 801 MSM8974-AC (28nm) | 32bit: Qualcomm Snapdragon 210 MSM8909 (28nm) |
| CPU | Quad-core, 1 processor: 4x 2.5GHz Krait 400 (Quad-core) | Quad-core, 1 processor: 4x 1.1GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 330 578Mhz | Qualcomm Adreno 304 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| RAM memory | 3GB LPDDR3 | 1GB LPDDR3 |
| Internal storage | 32GB | 8GB (3.88GB available) |
| External storage | Not supported | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Not supported |
| SIM card | 2 slots (Dual-SIM) micro-SIM (3FF) | 1 slot (Single-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 150/50 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 850/900/1700/1900/2100 | UMTS 850/1700/1900 |
| Primary 4G network | LTE 800/850/900/1800/2100/2600 | LTE Cat4 (Bands 2, 4, 7, 17) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | Not supported |
📷 Camera | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Back camera (main camera) | 16 megapixels | 5 megapixels |
| Main camera resolution | 4608x3456 pixels | 2592x1944 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | HD (1280x720) 30 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | feature not registered | f/2.8 (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 |
| Autofocus | Autofocus | 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 | Supported | Not supported |
| HDR | HDR photo only main camera | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Front camera (secondary) | 5 megapixels | 2 megapixels |
| Front camera resolution | 2592x1944 pixels | 1600x1200 pixels |
| Video recording (secondary) | Full HD (1920x1080) | HD (1280x720) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.8 (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 | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | FM | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.264, H.263, XviD |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 4.0 + A2DP | 4.1 + A2DP |
| WiFi | 802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) BL-49JH |
| Battery capacity | 4000 mAh | 1940 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 45 hours (1.9 days) | 9 hours |
| Standby | 940 hours (39.2 days) | 500 hours (20.8 days) |
➕ Other features | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| 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: Black, White, Gold • WiFi hotspot Java framework | • Colors: White, Blue Knock Code |
☢️ Radiation rate | ||
| Lenovo Vibe Z2 Pro (K920) | LG K4 (K121) | |
| 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 |