LG K4 (K120E) vs Motorola Primus (XT621)
Side by side comparison between LG K4 vs Motorola Primus phones, differences, pros, cons and full specifications. What's the better?
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What's the better phone? LG K4 (K120E)
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!
18 Advantages 
2 Advantages | 19 Common items in both devices |
| Until 32GB microSD, microSDHC |
| 16 million |
| (back) 5MP |
| LED flash |
| Only digital zoom |
| HD (1280x720) |
| Capacitive |
| +12 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 K4 (K120E) | Motorola Primus (XT621) | |
| Model | LG K4 (K120E) | Primus (XT621) |
| Other model names | LG K4 K120E, LG-K120E, LGK120E | Nextel Motorola Primus XT621, Motorola XT621 Primus |
| Country or region available |   (Europe), South Africa |   (Global, International), (Latin America) |
| Brand | LG | Motorola |
| Release date | 2/1/2016 | 1/1/2013 |
| Depth | 8.9 millimeters (0.35 inches) | 12.3 millimeters (0.48 inches) |
| Size (width x height) | 66.7 x 131.9 millimeters (2.63 x 5.19 in) | 60 x 119 millimeters (2.36 x 4.69 in) |
| Weight | 120 grams (4.2 ounces) | 145 grams (5.08 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| Display type | TFT IPS LCD | TFT LCD |
| Screen size | 4.5" inches | 4" inches |
| Screen-to-body ratio | ~63.4% (screen-to-body ratio) | ~63.8% (screen-to-body ratio) |
| Display resolution | 480x854 pixels | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 218 PPI | 233 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| System version | Android 5.1.1 Lollipop | Android 2.3.6 Gingerbread |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| Chipset | 64bit: MediaTek MT6735M (28nm) | 32bit: Qualcomm Snapdragon S2 MSM8255T (45nm) |
| CPU | Quad-core, 1 processor: 4x 1GHz ARM Cortex-A53 (Quad-core) | Single-core, 1 processor: 1x 1.2GHz Scorpion (Single-core) |
| GPU graphical controller | ARM Mali-T720 MP1 (450MHz) | Qualcomm Adreno 205 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| RAM memory | 1GB LPDDR3 | 1GB LPDDR2 |
| Internal storage | 8GB (3.88GB available) | 4GB (1GB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) micro-SIM (3FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 150/50 Mbps | 7.2 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G |
| 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 | iDEN 800 UMTS 2100/1900/1700 |
| Primary 4G network | LTE Cat4 (Bands 1, 3, 7, 8, 20) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | iDEN, GPRS, EDGE, UMTS, HSDPA, HSUPA |
| 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 K4 (K120E) | Motorola Primus (XT621) | |
| Back camera (main camera) | 5 megapixels | 5 megapixels |
| Main camera resolution | 2592x1944 pixels | 2592x1944 pixels |
| Video recording (primary) | HD (1280x720) 30 fps | HD (1280x720) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.8 (aperture) | feature not registered |
| 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 | Not supported |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | Not supported |
| 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 | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| Front camera (secondary) | 2 megapixels | Not supported |
| Front camera resolution | 1600x1200 pixels | Not supported |
| Video recording (secondary) | HD (1280x720) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.8 (aperture) | feature not registered |
| 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 K4 (K120E) | Motorola Primus (XT621) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | FM (RDS) | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, XviD | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, WAV, AAC+ |
🔌 Connectivity | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| 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 | 2.1 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| Battery type | Li-Ion: lithium-ion (Removable) BL-49JH | Li-Ion: lithium-ion (Removable) BP7X |
| Battery capacity | 1940 mAh | 1860 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 9 hours | feature not registered |
| Standby | 500 hours (20.8 days) | feature not registered |
➕ Other features | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| Call control | Voice dialing, Voice recorder | 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 | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: White, Blue • Knock Code | • Colors: Black • Push-to-Talk (PTT) • WiFi hotspot • Java framework |
☢️ Radiation rate | ||
| LG K4 (K120E) | Motorola Primus (XT621) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.23W/kg (head), 0.42W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.604W/kg (head), 1.19W/kg (body) | 0.73W/kg (head), 0.31W/kg (body) |