Samsung Galaxy S21 Ultra (SM-G998B 128GB) vs Samsung Duos E1252
Side by side comparison between Samsung Galaxy S21 Ultra vs Samsung Duos E1252 phones, differences, pros, cons and full specifications. What's the better?
,
6.8"
AMOLED
AMOLED
1440x3200
108
MP
MP
40mp
12GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
What's the better phone? Samsung Galaxy S21 Ultra (SM-G998B 128GB)
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!
30 Advantages 
2 Advantages | 3 Common items in both devices |
| Hands-free calling |
| Vibrating alert |
| 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 | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Model | Galaxy S21 Ultra (SM-G998B 128GB) | Duos E1252 |
| Other model names | Galaxy S21 Ultra 5G (SM-G998B Single-SIM) | Samsung E1252 Duos Lite, GT-E1252, GT-E1252/H |
| Country or region available |  Australia | feature not registered |
| Brand | Samsung | Samsung |
| Release date | 1/29/2021, Announced: 1/14/2021 | 10/1/2010 |
| Depth | 8.9 millimeters (0.35 inches) | 13.9 millimeters (0.55 inches) |
| Size (width x height) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) | 46.7 x 112.7 millimeters (1.84 x 4.44 in) |
| Weight | 227 grams (7.95 ounces) | 77 grams (2.7 ounces) |
| Build, materials | Aluminum frame, glass front/back | feature not registered |
| Protection against water and others | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant | Not supported |
📲 Display | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Display type | Dynamic AMOLED | CSTN - passive matrix |
| Screen size | 6.8" inches | 2" inches |
| Screen-to-body ratio | ~89.4% (screen-to-body ratio) | ~23.9% (screen-to-body ratio) |
| Display resolution | 1440x3200 pixels (20:9) | 128x160 pixels |
| Touchscreen | Capacitive Multitouch 10-points | Not supported |
| Pixel density (dot pitch) | 516 PPI | 102 PPI |
| Colors | 16 million | 260 thousand |
| Scratch-resistant glass | Gorilla Glass Victus | Not supported |
| Refresh rate | 120Hz | feature not registered |
| Display features | 1500nits[peak] HDR10+ Always-On Display | feature not registered |
🤖 Operating System | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| System version | Android 11 | Proprietary OS |
| Firmware update | Android 15 | feature not registered |
| User Interface | One UI 3.1 / 4.1 / 5.1 / 6.0 / 7.0 | feature not registered |
⚙️ Processor | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Chipset | 64bit: Samsung Exynos 2100 (5nm) | 32bit |
| CPU | Octa-core, 3 processors: 1x 2.9GHz ARM Cortex-X1 (Single-core) 3x 2.8GHz ARM Cortex-A78 (Triple-core) 4x 2.2GHz ARM Cortex-A55 (Quad-core) | Single-core, 1 processor: Single-core |
| GPU graphical controller | ARM Mali-G78 MP14 (854MHz) | feature not registered |
| Performance (benchmark) | AnTuTu: 657150 (v8), 727634 (v9) Geekbench: 3457 (v5.2) GFXBench: 51fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| RAM memory | 12GB LPDDR5 | 16MB |
| Internal storage | 128GB (101GB available) UFS 3.1 | 32MB |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM | 2 slots (Dual-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 5000/1920 Mbps | feature not registered |
| Network technology | 2G, 3G, 4G, 5G | 2G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Dual-Band 900/1800 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 900/1800 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Primary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE | Not supported |
| Primary 5G network | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | Not supported |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 900/1800 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | Not supported |
📷 Camera | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Back camera (main camera) | (quad camera) 108 megapixels 10MP periscope telephoto f/4.9240mm1/3.24"1.22µmPDAFOIS10x-optical-zoom 10MP telephoto f/2.470mm1/3.24"1.22µmPDAFOIS3x-optical-zoom 12MP ultrawide f/2.213mm1/2.55"1.4µmPDAFSuper-Steady-video | Not supported |
| Main camera resolution | 12000x9000 pixels | Not supported |
| Video recording (primary) | 8K UHD (7680x4320) 24 fps | Not supported |
| Flash | LED flash | Not supported |
| Focal aperture | f/1.8 (aperture) | feature not registered |
| Focal length | 26mm (lens) | feature not registered |
| Sensor size | 1/1.33" inches | feature not registered |
| Pixel size | 1.8µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus on both cameras | Not supported |
| Touch focus | Supported | Not supported |
| Image stabilization | OIS: Optical stabilization | feature not registered |
| Zoom | Digital and optical zoom | Not supported |
| Face/smile detection | Face detection, Smile detection | Not supported |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo/video on both cameras | Not supported |
| Camera extras | 4K@60fps 1080p@240fps 720p@960fps | feature not registered |
📸 Front camera | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Front camera (secondary) | 40 megapixels | Not supported |
| Front camera resolution | 7296x5472 pixels | Not supported |
| Video recording (secondary) | 4K UHD (3840x2160) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | feature not registered |
| Focal length | 26mm (lens) | feature not registered |
| Sensor size | 1/2.8" inches | feature not registered |
| Pixel size | 0.7µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Loudspeaker | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG | Supported |
| Active noise cancellation | 3 microphones | Not supported |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | feature not registered |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, AAC+ |
🔌 Connectivity | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| USB | USB 3.2 Type-C, USB OTG On-The-Go | Not supported |
| Audio output | Type-C reversible connector | Not supported |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.2 + A2DP/LE | Not supported |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | Not supported |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | Not supported |
| NFC | Supported | Not supported |
| Infrared port | Not supported | feature not registered |
🧭 Sensors | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) | Not supported |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 5000 mAh | 1000 mAh |
| Charger, watts | 25W Wired fast charging USB Power Delivery 3.0 | Wired charging |
| Inductive / wireless charging | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging | feature not registered |
| Talk time autonomy | feature not registered | 11 hours |
| Standby | feature not registered | 625 hours (26 days) |
➕ Other features | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support | • Colors: Black, White • Phonebook up to 1000 entries |
☢️ Radiation rate | ||
| Galaxy S21 Ultra (SM-G998B 128GB) | Samsung Duos E1252 | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.24W/kg (head), 0.72W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.714W/kg (head), 1.58W/kg (body) | feature not registered |