Motorola Primus (XT621) vs LG Optimus F3Q (D520)
Side by side comparison between Motorola Primus vs LG Optimus F3Q phones, differences, pros, cons and full specifications. What's the better?
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What's the better phone? LG Optimus F3Q (D520)
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!
4 Advantages 
15 Advantages | 22 Common items in both devices |
| 1GB LPDDR2 |
| 4GB (1GB available) |
| Until 32GB microSD, microSDHC |
| 16 million |
| 480x800 pixels |
| 233 PPI |
| 4" |
| +15 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 | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Change model | ||
| Model | Primus (XT621) | Optimus F3Q (D520) |
| Other model names | Nextel Motorola Primus XT621, Motorola XT621 Primus | T-Mobile LG Optimus F3Q 4G LTE, LG FX3, LG D520 |
| Country or region available |   (Global, International), (Latin America) | feature not registered |
| Brand | Motorola | LG |
| Release date | 1/1/2013 | 1/1/2014 |
| Depth | 12.3 millimeters (0.48 inches) | 14 millimeters (0.55 inches) |
| Size (width x height) | 60 x 119 millimeters (2.36 x 4.69 in) | 64.8 x 121.9 millimeters (2.55 x 4.8 in) |
| Weight | 145 grams (5.08 ounces) | 160 grams (5.6 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Display type | TFT LCD | TFT IPS LCD |
| Screen size | 4" inches | 4" inches |
| Screen-to-body ratio | ~63.8% (screen-to-body ratio) | ~57.7% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 233 PPI | 233 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass | Not supported |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| System version | Android 2.3.6 Gingerbread | Android 4.1.2 Jelly Bean |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Chipset | 32bit: Qualcomm Snapdragon S2 MSM8255T (45nm) | 32bit: Qualcomm Snapdragon 400 MSM8930 |
| CPU | Single-core, 1 processor: 1x 1.2GHz Scorpion (Single-core) | Dual-core, 1 processor: 2x 1.2GHz Krait 200 (Dual-core) |
| GPU graphical controller | Qualcomm Adreno 205 | Qualcomm Adreno 305 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| RAM memory | 1GB LPDDR2 | 1GB LPDDR2 |
| Internal storage | 4GB (1GB available) | 4GB (1GB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 7.2 Mbps | 100/50 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 | iDEN 800 UMTS 2100/1900/1700 | UMTS 850/1700/1900/2100 |
| Primary 4G network | Not supported | LTE 700/1700/1900/2100 |
| Primary 5G network | Not supported | Not supported |
| Primary data network | iDEN, GPRS, EDGE, UMTS, HSDPA, HSUPA | GPRS, EDGE, UMTS, HSDPA, HSUPA, LTE |
| 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 | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Back camera (main camera) | 5 megapixels | 5 megapixels |
| Main camera resolution | 2592x1944 pixels | 2560x1920 pixels |
| Video recording (primary) | HD (1280x720) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | feature not registered | 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 | Not supported | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | Not supported | feature not registered |
| 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 | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Front camera (secondary) | Not supported | 0.3 megapixels |
| Front camera resolution | Not supported | 640x480 pixels |
| Video recording (secondary) | Not supported | VGA (640x480) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | 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 | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, DivX, H.264, H.263, WMV |
| Audio formats | MP3, WAV, AAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 2.1 + A2DP | 4.0 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging | S-GPS, GeoTagging |
| NFC | Not supported | Supported |
| Infrared port | Not supported | feature not registered |
🧭 Sensors | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| Battery type | Li-Ion: lithium-ion (Removable) BP7X | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 1860 mAh | 2460 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | feature not registered | 15 hours |
| Standby | feature not registered | 360 hours (15 days) |
➕ Other features | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| 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 | Not supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, Flash player | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Retractable QWERTY keyboard |
| Miscellaneous | • Colors: Black • Push-to-Talk (PTT) • WiFi hotspot Java framework | • Colors: Blue • T-Mobile TV • Quick MEMO • HAC M3/T3 • WiFi hotspot Java framework |
☢️ Radiation rate | ||
| Motorola Primus (XT621) | LG Optimus F3Q (D520) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.23W/kg (head), 0.42W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.73W/kg (head), 0.31W/kg (body) | feature not registered |