Samsung Gear S2 (3G SM-R730T) vs Sony Ericsson Vivaz Pro (U8a)
Side by side comparison between Samsung Gear S2 vs Sony Ericsson Vivaz Pro devices, differences, pros, cons and full specifications. What's the better?
,
1.2"
AMOLED
AMOLED
360x360
N/A
512MB
RAM
RAM
Dual-core
300
mAh
mAh
(Non removable)
vs
What's the better device? Samsung Gear S2 (3G SM-R730T)
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 
12 Advantages | 5 Common items in both devices |
| 16 million |
| Accelerometer |
| Ambient light sensor |
| A-GPS, GeoTagging |
| Gorilla Glass 3 / Scratch-resistant glass |
| + 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 | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Model | Gear S2 (3G SM-R730T) | Vivaz Pro (U8a) |
| Other model names | T-Mobile Samsung Gear S2 SM-R730T, Samsung Orbis | Sony Ericsson Vivaz Pro U8, SE Kanna |
| Country or region available |  USA |   (Latin America), Canada, USA |
| Brand | Samsung | Sony Ericsson |
| Release date | 11/1/2015 | 5/1/2010 |
| Depth | 13.4 millimeters (0.53 inches) | 15 millimeters (0.59 inches) |
| Size (width x height) | 44 x 51.8 millimeters (1.73 x 2.04 in) | 52 x 109 millimeters (2.05 x 4.29 in) |
| Weight | 51 grams (1.79 ounces) | 117 grams (4.1 ounces) |
| Build, materials | feature not registered | Plastic body |
| Protection against water and others | Waterproof (IP?) | Not supported |
📲 Display | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Display type | Super AMOLED | TFT LCD |
| Screen size | 1.2" inches | 3.2" inches |
| Screen-to-body ratio | ~20.4% (screen-to-body ratio) | ~49.8% (screen-to-body ratio) |
| Display resolution | 360x360 pixels | 360x640 pixels |
| Touchscreen | Capacitive Multitouch | Resistive Single touch 1-point |
| Pixel density (dot pitch) | 424 PPI | 229 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Scratch-resistant glass |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| System version | Tizen 2.3 | Symbian 9.4 S60 5th Edition Symbian^1 |
| Firmware update | Tizen 2.3.2 | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Chipset | 32bit: Qualcomm Snapdragon 400 MSM8x26 | 32bit |
| CPU | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A7 (Dual-core) | Single-core, 1 processor: 1x 720MHz ARM Cortex-A8 (Single-core) |
| GPU graphical controller | Qualcomm Adreno 305 | PowerVR SGX530 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| RAM memory | 512MB | 256MB SDRAM |
| Internal storage | 4GB (2GB available) | 512MB (75MB available) |
| External storage | Not supported | Until 16GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 7.2/2 Mbps |
| Network technology | 2G, 3G | 2G, 3G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Dual-Band 850/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1900 | UMTS 850/1900/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | CSD, 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 | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Back camera (main camera) | Not supported | 5 megapixels |
| Main camera resolution | Not supported | 2560x1920 pixels |
| Video recording (primary) | Not supported | HD (1280x720) 24 fps |
| Flash | Not supported | 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 | Not supported | Not supported |
| Image stabilization | feature not registered | EIS: Digital stabilization |
| Zoom | Not supported | Only digital zoom |
| Face/smile detection | Not supported | Face detection |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| 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 | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | feature not registered |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | feature not registered | MP4, WMV, 3GP, RV |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WMA, WAV, RA, AAC, M4A |
🔌 Connectivity | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| USB | Not supported | MicroUSB 2.0 |
| Audio output | Not supported | 3.5mm jack |
| TV output | Not supported | Proprietary TV-out |
| Bluetooth | 4.1 + A2DP | 2.1 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g [wifi3] (2.4GHz) |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate | Accelerometer Ambient light sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Removable) EP500 |
| Battery capacity | 300 mAh | 1200 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | 5 hours | 5.2 hours |
| Standby | 48 hours (2 days) | 440 hours (18.3 days) |
➕ Other features | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice recorder |
| Messaging | SMS, MMS, E-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 | Not supported | feature not registered |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Retractable QWERTY keyboard |
| Miscellaneous | • Colors: Black, White • Stainless Steel body • Samsung Pay • S-Voice, S-Health • Wireless Charging (Qi) • IP68 certified: dust and water resistant up to 1.5m and 30min | • Colors: Black, White • 8GB microSD included • 3D stereo sound • Continuous autofocus • Touch capture • WisePilot navigation • Java framework |
☢️ Radiation rate | ||
| Samsung Gear S2 (3G SM-R730T) | Sony Ericsson Vivaz Pro (U8a) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.737W/kg (head), 0.893W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |