LG L Prime Dual TV (D337) vs LG K4 (K121)
Side by side comparison between LG L Prime vs LG K4 phones, differences, pros, cons and full specifications. What's the better?
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What's the better phone? LG K4 (K121)
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!
8 Advantages 
9 Advantages | 26 Common items in both devices |
| 8GB (4GB available) / 8GB (3.88GB available) |
| Until 32GB microSD, microSDHC |
| Plastic body / Plastic body, glass front |
| TFT IPS LCD |
| 16 million |
| 480x854 pixels |
| LED flash |
| +19 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 L Prime Dual TV (D337) | LG K4 (K121) | |
| Change model | ||
| Model | LG L Prime Dual TV (D337) | LG K4 (K121) |
| Other model names | LG L Prime Dual-chip, LG-D337, LG Prime | (Bell, Rogers, Telus) LG K4 K121, LGK121 |
| Country or region available |  Brazil |  Canada |
| Brand | LG | LG |
| Release date | 9/1/2014 | 2/1/2016 |
| Depth | 10.7 millimeters (0.42 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 70.6 x 138.2 millimeters (2.78 x 5.44 in) | 66.7 x 131.9 millimeters (2.63 x 5.19 in) |
| Weight | 137 grams (4.8 ounces) | 113 grams (3.96 ounces) |
| Build, materials | Plastic body | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5" inches | 4.5" inches |
| Screen-to-body ratio | ~70.6% (screen-to-body ratio) | ~63.4% (screen-to-body ratio) |
| Display resolution | 480x854 pixels | 480x854 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 196 PPI | 218 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| System version | Android 4.4.2 KitKat | Android 5.1.1 Lollipop |
| Firmware update | Android 5.0.2 Lollipop | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Chipset | 32bit: MediaTek MT6582M | 32bit: Qualcomm Snapdragon 210 MSM8909 (28nm) |
| CPU | Quad-core, 1 processor: 4x 1.3GHz ARM Cortex-A7 (Quad-core) | Quad-core, 1 processor: 4x 1.1GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | ARM Mali-400 | Qualcomm Adreno 304 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| RAM memory | 1GB LPDDR2 | 1GB LPDDR3 |
| Internal storage | 8GB (4GB available) | 8GB (3.88GB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) micro-SIM (3FF) | 1 slot (Single-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 150/50 Mbps |
| Network technology | 2G, 3G | 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 850/2100 | UMTS 850/1700/1900 |
| Primary 4G network | Not supported | LTE Cat4 (Bands 2, 4, 7, 17) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | 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 | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Back camera (main camera) | 8 megapixels | 5 megapixels |
| Main camera resolution | 3264x2448 pixels | 2592x1944 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | HD (1280x720) 30 fps |
| Flash | 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 | 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 | HDR photo only main camera | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Front camera (secondary) | 1.3 megapixels | 2 megapixels |
| Front camera resolution | 1280x1024 pixels | 1600x1200 pixels |
| Video recording (secondary) | HD (1280x720) | 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 | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | FM | FM (RDS) |
| TV | Digital TV 1Seg | Not supported |
| Video formats | MP4, H.264, H.263, DivX, XviD, WMV | MP4, H.264, H.263, XviD |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| LG L Prime Dual TV (D337) | 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 b/g/n [wifi4] (2.4GHz) | 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 | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Removable) BL-49JH |
| Battery capacity | 2460 mAh | 1940 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 9 hours | 9 hours |
| Standby | 540 hours (22.5 days) | 500 hours (20.8 days) |
➕ Other features | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| Call control | 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 | External retractable antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: White, Black • LG UI 4.1 • TV ISDB-TB 1Seg • KnockCode • QuickMemo • Selfie Gesture • WiFi hotspot • Java framework | • Colors: White, Blue • Knock Code |
☢️ Radiation rate | ||
| LG L Prime Dual TV (D337) | LG K4 (K121) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.34W/kg (head), 0.34W/kg (body) | feature not registered |