Motorola Primus (XT621) vs Sony Ericsson Xperia Active (ST17a)
Side by side comparison between Motorola Primus vs Sony Ericsson Xperia Active phones, differences, pros, cons and full specifications. What's the better?
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What's the better phone? Sony Ericsson Xperia Active (ST17a)
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 | 24 Common items in both devices |
| Until 32GB microSD, microSDHC |
| 16 million |
| (back) 5MP |
| LED flash |
| Only digital zoom |
| HD (1280x720) |
| 3G HSUPA |
| +17 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) | Sony Ericsson Xperia Active (ST17a) | |
| Change model | ||
| Model | Primus (XT621) | Xperia Active (ST17a) |
| Other model names | Nextel Motorola Primus XT621, Motorola XT621 Primus | Sony Ericsson Xperia active ST17, ST17a |
| Country or region available |   (Global, International), (Latin America) |    (Latin America), Brazil, Canada, USA |
| Brand | Motorola | Sony Ericsson |
| Release date | 1/1/2013 | 10/1/2011 |
| Depth | 12.3 millimeters (0.48 inches) | 16.5 millimeters (0.65 inches) |
| Size (width x height) | 60 x 119 millimeters (2.36 x 4.69 in) | 55 x 92 millimeters (2.17 x 3.62 in) |
| Weight | 145 grams (5.08 ounces) | 111 grams (3.89 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | IP67 certified: dust proof and waterproof over 1 meter and 30min |
📲 Display | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| Display type | TFT LCD | TFT LED-Backlit LCD |
| Screen size | 4" inches | 3" inches |
| Screen-to-body ratio | ~63.8% (screen-to-body ratio) | ~53% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 320x480 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 233 PPI | 192 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass | Dragontrail Glass |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| System version | Android 2.3.6 Gingerbread | Android 2.3.3 Gingerbread |
| Firmware update | feature not registered | Android 4.0.3 Ice Cream Sandwich ICS |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| Chipset | 32bit: Qualcomm Snapdragon S2 MSM8255T (45nm) | 32bit: Qualcomm Snapdragon S2 MSM8255 (45nm) |
| CPU | Single-core, 1 processor: 1x 1.2GHz Scorpion (Single-core) | Single-core, 1 processor: 1x 1GHz Scorpion (Single-core) |
| GPU graphical controller | Qualcomm Adreno 205 | Qualcomm Adreno 205 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| RAM memory | 1GB LPDDR2 | 512MB LPDDR2 |
| Internal storage | 4GB (1GB available) | 1GB (320MB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| 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 | 7.2/5.76 Mbps |
| Network technology | 2G, 3G | 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 | iDEN 800 UMTS 2100/1900/1700 | UMTS 850/1900/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | iDEN, GPRS, EDGE, UMTS, HSDPA, HSUPA | 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 | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| 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 | 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 | 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 | Not supported | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| Front camera (secondary) | Not supported | Not supported |
| Front camera resolution | Not supported | Not supported |
| Video recording (secondary) | Not supported | Not supported |
| 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) | Sony Ericsson Xperia Active (ST17a) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | FM | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.263, H.264 |
| Audio formats | MP3, WAV, AAC+ | MP3, eAAC+, WAV |
🔌 Connectivity | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| 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 | 2.1 + 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 | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor ANT+ Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| Battery type | Li-Ion: lithium-ion (Removable) BP7X | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 1860 mAh | 1200 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | feature not registered | 5.5 hours |
| Standby | feature not registered | 335 hours (14 days) |
➕ Other features | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| Call control | 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 | Not supported | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, Flash player | HTML, XHTML, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • Push-to-Talk (PTT) • WiFi hotspot Java framework | • Colors: Orange/black, White/black • 2GB microSD included • Sony Mobile BRAVIA Engine • WiFi hotspot Java framework |
☢️ Radiation rate | ||
| Motorola Primus (XT621) | Sony Ericsson Xperia Active (ST17a) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.23W/kg (head), 0.42W/kg (body) | 1.12W/kg (head), 1.07W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.73W/kg (head), 0.31W/kg (body) | feature not registered |