Samsung Star II Duos (GT-C6712) vs Samsung Galaxy S20 Ultra 5G (SM-G988U)
Side by side comparison between Samsung Star II Duos vs Samsung Galaxy S20 Ultra 5G phones, differences, pros, cons and full specifications. What's the better?
,
vs
6.9"
AMOLED
AMOLED
1440x3200
108
MP
MP
40mp
12GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S20 Ultra 5G (SM-G988U)
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!
3 Advantages 
41 Advantages | 7 Common items in both devices |
| Capacitive |
| Accelerometer |
| Proximity sensor |
| Hands-free calling |
| Video calling |
| Vibrating alert |
| FM (RDS) / FM |
| + 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 Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Change model | ||
| Model | Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) |
| Other model names | Samsung Star 2 Duos C6712, Samsung Star Duos 2 | Galaxy S20 Ultra 5G (Snapdragon, 12GB RAM) - US Carriers |
| Country or region available | feature not registered |  USA |
| Brand | Samsung | Samsung |
| Release date | 5/25/2011 | 3/6/2020, Announced: 2/11/2020 |
| Depth | 12.2 millimeters (0.48 inches) | 8.8 millimeters (0.35 inches) |
| Size (width x height) | 56 x 109.5 millimeters (2.2 x 4.31 in) | 76 x 166.9 millimeters (2.99 x 6.57 in) |
| Weight | 100 grams (3.5 ounces) | 222 grams (7.77 ounces) |
| Build, materials | feature not registered | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Display type | TFT LCD | Dynamic AMOLED |
| Screen size | 3.2" inches | 6.9" inches |
| Screen-to-body ratio | ~47.5% (screen-to-body ratio) | ~90.6% (screen-to-body ratio) |
| Display resolution | 240x400 pixels | 1440x3200 pixels (20:9) |
| Touchscreen | Capacitive Single touch 1-point | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 146 PPI | 509 PPI |
| Colors | 260 thousand | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 6 |
| Refresh rate | feature not registered | 120Hz |
| Display features | feature not registered | HDR10+ Always-On Display 120Hz@FHD 60Hz@QHD |
🤖 Operating System | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| System version | Proprietary OS | Android 10 |
| Firmware update | feature not registered | Android 13 |
| User Interface | feature not registered | One UI 2.5 / 3.1 / 4.1 / 5.0 |
⚙️ Processor | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Chipset | 32bit | 64bit: Qualcomm Snapdragon 865 (SM8250) (7nm) |
| CPU | Single-core, 1 processor: Single-core | Octa-core, 3 processors: 1x 2.84GHz Kryo 585 (Single-core) 3x 2.42GHz Kryo 585 (Triple-core) 4x 1.8GHz Kryo 585 (Quad-core) |
| GPU graphical controller | feature not registered | Qualcomm Adreno 650 (250-587MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 415976 (v7), 514485 (v8) Geekbench: 12191 (v4.4), 2697 (v5.1) GFXBench: 21fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| RAM memory | feature not registered | 12GB LPDDR5 |
| Internal storage | 20MB | 128GB (104GB available) UFS 3.0 |
| External storage | Until 16GB microSD, microSDHC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM |
| Maximum Download / Upload | 0.236 Mbps | 5000/1024 Mbps |
| Network technology | 2G | 2G, 3G, 4G, 5G |
| 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 | Not supported | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Primary 5G network | Not supported | SA/NSA/Sub6 (2, 5, 41, 66, 71) mmWave (260, 261) |
| Primary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Back camera (main camera) | 3.1 megapixels | (quad camera) 108 megapixels 48MP periscope telephoto f/3.5103mm1/2.0"0.8µmPDAFOIS4x-optical-zoom10x-hybrid-zoom 12MP ultrawide f/2.213mm1.4µmSuper-Steady-video 0.3MP TOF 3D f/1.0 |
| Main camera resolution | 2048x1536 pixels | 12000x9000 pixels |
| Video recording (primary) | QVGA (320x240) 15 fps | 8K UHD (7680x4320) 24 fps |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | feature not registered | 1/1.33" inches |
| Pixel size | feature not registered | 0.8µm pixel |
| Autofocus | Not supported | PDAF: phase detection autofocus on both cameras |
| Touch focus | Not supported | Supported |
| Image stabilization | Not supported | OIS: Optical stabilization |
| Zoom | Only digital zoom | Digital and optical zoom |
| Face/smile detection | Not supported | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | Not supported | HDR photo/video on both cameras |
| Camera extras | feature not registered | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Front camera (secondary) | Not supported | 40 megapixels |
| Front camera resolution | Not supported | 7296x5472 pixels |
| Video recording (secondary) | Not supported | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.2 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | 0.7µm pixel |
🔉 Sound and multimedia | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | Not supported | 2 microphones |
| Radio | FM (RDS) | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, AAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| USB | MicroUSB 2.0 | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | Type-C reversible connector |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 3.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | Not supported | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Sensors | Accelerometer Proximity sensor | Accelerometer Ambient light sensor ANT+ Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1200 mAh | 5000 mAh |
| Charger, watts | Wired charging | 45W Wired fast charging USB Power Delivery 3.0 |
| Inductive / wireless charging | feature not registered | 15W Qi wireless charging (Qi/PMA) 9W Reverse wireless charging |
| Talk time autonomy | 10 hours | feature not registered |
| Standby | 550 hours (22.9 days) | feature not registered |
➕ Other features | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| Call control | Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS, MMS, E-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 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • Samsung TouchWiz UI 3.0 • Dolphin 2.0 browser • Facebook, Twitter • Word, Excel, PowerPoint, PDF viewer • Java framework | • Colors: Cosmic Black, Cosmic Grey, Cloud White • Ultrasonic fingerprint sensor • Bixby • Samsung DeX • Samsung Pay (MST, NFC) |
☢️ Radiation rate | ||
| Samsung Star II Duos (GT-C6712) | Galaxy S20 Ultra 5G (SM-G988U) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.94W/kg (head), 0.95W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |