Samsung Galaxy A12 (SM-A125F/DS 128GB/4GB) vs Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
Side by side comparison between Samsung Galaxy A12 vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
PLS
PLS
720x1600
48
MP
MP
8mp
4GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
6.8"
AMOLED
AMOLED
1440x3200
108
MP
MP
40mp
12GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 Ultra (SM-G998B/DS 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!
16 Common items in both devices |
128GB (106GB available) / 128GB (101GB available) |
8.9 millimeters (0.35 inches) |
16 million |
LED flash |
Autofocus / PDAF: phase detection autofocus on both cameras |
HDR photo on both cameras / HDR photo/video on both cameras |
Capacitive |
+9 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 A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Model | Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) |
Other model names | Galaxy A12 SM-A125F/Dual-Sim (128GB + 4GB RAM) | Galaxy S21 Ultra 5G (SM-G998B/Dual-SIM) |
Country or region available | Indonesia, Singapore, Thailand, Turkey | (Global, International) |
Brand | Samsung | Samsung |
Release date | 12/21/2020, Announced: 11/24/2020 | 1/29/2021, Announced: 1/14/2021 |
Depth | 8.9 millimeters (0.35 inches) | 8.9 millimeters (0.35 inches) |
Size (width x height) | 75.8 x 164 millimeters (2.98 x 6.46 in) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) |
Weight | 205 grams (7.18 ounces) | 227 grams (7.95 ounces) |
Build, materials | Plastic body, glass front | 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 | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Display type | TFT PLS | Dynamic AMOLED |
Screen size | 6.5" inches | 6.8" inches |
Screen-to-body ratio | ~82.1% (screen-to-body ratio) | ~89.4% (screen-to-body ratio) |
Display resolution | 720x1600 pixels (20:9) | 1440x3200 pixels (20:9) |
Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
Pixel density (dot pitch) | 270 PPI | 516 PPI |
Colors | 16 million | 16 million |
Scratch-resistant glass | Not supported | Gorilla Glass Victus |
Refresh rate | 60Hz | 120Hz |
Display features | Not supported | 1500nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
System version | Android 10 | Android 11 |
Firmware update | Android 11 | Android 14 |
User Interface | One UI 3.1 | One UI 3.1 / 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Chipset | 64bit: MediaTek Helio P35 (MT6765) (12nm) | 64bit: Samsung Exynos 2100 (5nm) |
CPU | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) | 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) |
GPU graphical controller | PowerVR GE8320 MP2 (680MHz) | ARM Mali-G78 MP14 (854MHz) |
Performance (benchmark) | AnTuTu: 108503 (v8) Geekbench: 1022 (v5.4) GFXBench: 5fps (ES 3.1 onscreen) | AnTuTu: 657150 (v8), 727634 (v9) Geekbench: 3457 (v5.2) GFXBench: 51fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
RAM memory | 4GB LPDDR4X | 12GB LPDDR5 |
Internal storage | 128GB (106GB available) eMMC 5.1 | 128GB (101GB available) UFS 3.1 |
External storage | Until 1TB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card |
SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM |
Maximum Download / Upload | 150/50 Mbps | 5000/1920 Mbps |
Network technology | 2G, 3G, 4G | 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 | UMTS 850/900/2100 | UMTS 850/900/1700/1900/2100 |
Primary 4G network | LTE Cat4 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE | 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 |
Primary 5G network | Not supported | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78) |
Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
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, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE |
Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Back camera (main camera) | (quad camera) 48 megapixels 5MP ultrawide f/2.2123° 2MP macro f/2.4 2MP depth f/2.4 | (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 |
Main camera resolution | 8000x6000 pixels | 12000x9000 pixels |
Video recording (primary) | Full HD (1920x1080) 30 fps | 8K UHD (7680x4320) 24 fps |
Flash | LED flash | LED flash |
Focal aperture | f/2.0 (aperture) | f/1.8 (aperture) |
Focal length | 26mm lens | 26mm lens |
Sensor size | feature not registered | 1/1.33" inches |
Pixel size | feature not registered | 1.8µm pixel |
Autofocus | Autofocus | PDAF: phase detection autofocus on both cameras |
Touch focus | Supported | Supported |
Image stabilization | EIS: Digital stabilization | OIS: Optical stabilization |
Zoom | Only digital zoom | Digital and optical zoom |
Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
BSI sensor | Not supported | Supported |
HDR | HDR photo on both cameras | HDR photo/video on both cameras |
Camera extras | feature not registered | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Front camera (secondary) | 8 megapixels | 40 megapixels |
Front camera resolution | 3264x2448 pixels | 7296x5472 pixels |
Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
Front flash | Not supported | Not supported |
Focal aperture | f/2.2 (aperture) | f/2.2 (aperture) |
Focal length | feature not registered | 26mm lens |
Sensor size | feature not registered | 1/2.8" inches |
Pixel size | feature not registered | 0.7µm pixel |
🔉 Sound and multimedia | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Loudspeaker | Mono sound (not stereo) | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
Active noise cancellation | 2 microphones or more | 2 microphones or more |
Radio | FM | FM |
TV | Not supported | Not supported |
Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
USB | USB 2.0 Type-C reversible connector | 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 | 5.0 + A2DP/LE | 5.2 + A2DP/LE |
WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
DLNA | Not supported | Supported |
GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
NFC | Not supported | Supported |
Infrared port | Not supported | Not supported |
🧭 Sensors | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Sensors | Accelerometer Face unlock Fingerprint sensor (side-mounted) Virtual ambient light sensor Virtual proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) |
Vibrating alert | Supported | Supported |
🔋 Battery | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
Battery capacity | 5000 mAh | 5000 mAh |
Charger, watts | 15W Wired fast charging | 25W Wired fast charging USB Power Delivery 3.0 |
Inductive / wireless charging | Not supported | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging |
Talk time autonomy | feature not registered | feature not registered |
Standby | feature not registered | feature not registered |
➕ Other features | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
Messaging | SMS (T9), MMS, E-mail, Push 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, HTML5 | HTML, XHTML, HTML5 |
Antenna | Internal antenna | Internal antenna |
Qwerty physical keyboard | Not supported | Not supported |
Miscellaneous | • Colors: Black, White, Blue, Red | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support |
☢️ Radiation rate | ||
Galaxy A12 (SM-A125F/DS 128GB/4GB) | Galaxy S21 Ultra (SM-G998B/DS 128GB) | |
SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.24W/kg (head), 0.72W/kg (body) |
SAR 2W/kg (Europe, UK, etc.) | 0.673W/kg (head), 1.377W/kg (body) | 0.714W/kg (head), 1.58W/kg (body) |