Samsung Star II Duos (GT-C6712) vs Samsung Galaxy A21 (SM-A215U)
Side by side comparison between Samsung Star II Duos vs Samsung Galaxy A21 phones, differences, pros, cons and full specifications. What's the better?
,
vs
6.5"
PLS
PLS
720x1600
16
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy A21 (SM-A215U)
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 
31 Advantages | 10 Common items in both devices |
| Only digital zoom |
| Capacitive |
| Accelerometer |
| Proximity sensor |
| Hands-free calling |
| Video calling |
| Vibrating alert |
| +3 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 A21 (SM-A215U) | |
| Change model | ||
| Model | Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) |
| Other model names | Samsung Star 2 Duos C6712, Samsung Star Duos 2 | Galaxy A21 SM-A215U (Sprint, T-Mobile, US Cellular, Verizon) |
| Country or region available | feature not registered |  USA |
| Brand | Samsung | Samsung |
| Release date | 5/25/2011 | 6/26/2020 |
| Depth | 12.2 millimeters (0.48 inches) | 8.1 millimeters (0.32 inches) |
| Size (width x height) | 56 x 109.5 millimeters (2.2 x 4.31 in) | 76.7 x 167.8 millimeters (3.02 x 6.61 in) |
| Weight | 100 grams (3.5 ounces) | 193 grams (6.76 ounces) |
| Build, materials | feature not registered | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Display type | TFT LCD | TFT PLS |
| Screen size | 3.2" inches | 6.5" inches |
| Screen-to-body ratio | ~47.5% (screen-to-body ratio) | ~79.3% (screen-to-body ratio) |
| Display resolution | 240x400 pixels | 720x1600 pixels (20:9) |
| Touchscreen | Capacitive Single touch 1-point | Capacitive Multitouch |
| Pixel density (dot pitch) | 146 PPI | 270 PPI |
| Colors | 260 thousand | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| System version | Proprietary OS | Android 10 |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Chipset | 32bit | 64bit: MediaTek Helio P35 (MT6765) (12nm) |
| CPU | Single-core, 1 processor: Single-core | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | feature not registered | PowerVR GE8320 MP2 (680MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| RAM memory | feature not registered | 3GB LPDDR3 |
| Internal storage | 20MB | 32GB (20GB available) eMMC 5.1 |
| External storage | Until 16GB microSD, microSDHC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 0.236 Mbps | 150/50 Mbps |
| Network technology | 2G | 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 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | Not supported | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat4 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | Not supported |
📷 Camera | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Back camera (main camera) | 3.1 megapixels | (quad camera) 16 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP macro f/2.4 2MP depth f/2.4 |
| Main camera resolution | 2048x1536 pixels | 4608x3456 pixels |
| Video recording (primary) | QVGA (320x240) 15 fps | Full HD (1920x1080) 30 fps |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/3.06" inches |
| Pixel size | feature not registered | 1µm pixel |
| Autofocus | Not supported | PDAF: phase detection autofocus |
| Touch focus | Not supported | Supported |
| Image stabilization | Not supported | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Not supported | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Front camera (secondary) | Not supported | 13 megapixels |
| Front camera resolution | Not supported | 4128x3096 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | 2 microphones or more |
| 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 A21 (SM-A215U) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C reversible connector |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 3.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | Not supported | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Sensors | Accelerometer Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1200 mAh | 4000 mAh |
| Charger, watts | Wired charging | 15W Wired fast charging |
| Inductive / wireless charging | feature not registered | Not supported |
| 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 A21 (SM-A215U) | |
| 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: Black • One UI 2.0 |
☢️ Radiation rate | ||
| Samsung Star II Duos (GT-C6712) | Galaxy A21 (SM-A215U) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.6W/kg (head), 1.27W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |