Samsung Galaxy S21 Ultra (SM-G998U1 128GB) vs Samsung Galaxy A3 (SM-A300YZ)
Side by side comparison between Samsung Galaxy S21 Ultra vs Samsung Galaxy A3 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
4.5"
AMOLED
AMOLED
540x960
8
MP
MP
5mp
1GB
RAM
RAM
Quad-core
1900
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 Ultra (SM-G998U1 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!
17 Common items in both devices |
Aluminum frame, glass front/back / Aluminum body, glass front |
Dynamic AMOLED / Super AMOLED |
16 million |
LED flash |
PDAF: phase detection autofocus on both cameras / Autofocus |
Capacitive |
Multitouch |
+10 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-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Model | Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) |
Other model names | Galaxy S21 Ultra 5G (SM-G998U1) Unlocked | Galaxy A3 (4G LTE) SM-A300YZ (Single-Sim) |
Country or region available | USA | (Latin America), Chile, Guatemala, Panama |
Brand | Samsung | Samsung |
Release date | 1/29/2021, Announced: 1/14/2021 | 11/1/2014 |
Depth | 8.9 millimeters (0.35 inches) | 6.9 millimeters (0.27 inches) |
Size (width x height) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) | 65.5 x 130.1 millimeters (2.58 x 5.12 in) |
Weight | 227 grams (7.95 ounces) | 110 grams (3.85 ounces) |
Build, materials | Aluminum frame, glass front/back | Aluminum body, glass front |
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-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Display type | Dynamic AMOLED | Super AMOLED |
Screen size | 6.8" inches | 4.5" inches |
Screen-to-body ratio | ~89.4% (screen-to-body ratio) | ~65.5% (screen-to-body ratio) |
Display resolution | 1440x3200 pixels (20:9) | 540x960 pixels (16:9) |
Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
Pixel density (dot pitch) | 516 PPI | 245 PPI |
Colors | 16 million | 16 million |
Scratch-resistant glass | Gorilla Glass Victus | Gorilla Glass 4 |
Refresh rate | 120Hz | 60Hz |
Display features | 1500nits[peak] HDR10+ Always-On Display | Not supported |
🤖 Operating System | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
System version | Android 11 | Android 4.4.4 KitKat |
Firmware update | Android 14 | Android 6.0.1 Marshmallow |
User Interface | One UI 3.1 / 4.1 / 5.1 / 6.0 | TouchWiz UX |
⚙️ Processor | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Chipset | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) | 64bit: Qualcomm Snapdragon 410 (MSM8916) (28nm) |
CPU | Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core) | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A53 (Quad-core) |
GPU graphical controller | Qualcomm Adreno 660 (840MHz) | Qualcomm Adreno 306 (400MHz) |
Performance (benchmark) | AnTuTu: 681099 (v8), 809165 (v9) Geekbench: 3539 (v5.2) GFXBench: 54fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
RAM memory | 12GB LPDDR5 | 1GB LPDDR2 |
Internal storage | 128GB (101GB available) UFS 3.1 | 16GB (12GB available) eMMC 4.5 |
External storage | Not supported | Until 64GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Dual-SIM | Dual-SIM Standby - Call active on one sim card | Not supported |
SIM card | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM | 1 slot (Single-SIM) nano-SIM (4FF) |
Maximum Download / Upload | 5000/1920 Mbps | 150/50 Mbps |
Network technology | 2G, 3G, 4G, 5G | 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 | CDMA 800/1900, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | UMTS 850/900/1900/2100 |
Primary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE | LTE Cat4 (3, 7, 8, 28) |
Primary 5G network | SA/NSA/Sub6 (2, 5, 25, 41, 66, 71) mmWave (260, 261) | Not supported |
Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
Secondary 2G network | CDMA 800/1900, GSM 850/900/1800/1900 | Not supported |
Secondary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | Not supported |
Secondary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE | Not supported |
Secondary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | Not supported |
📷 Camera | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
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 | 8 megapixels |
Main camera resolution | 12000x9000 pixels | 3264x2448 pixels |
Video recording (primary) | 8K UHD (7680x4320) 24 fps | Full HD (1920x1080) 30 fps |
Flash | LED flash | LED flash |
Focal aperture | f/1.8 (aperture) | f/2.4 (aperture) |
Focal length | 26mm lens | 31mm lens |
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 | Autofocus |
Touch focus | Supported | Supported |
Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
Zoom | Digital and optical zoom | Only digital zoom |
Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
BSI sensor | Supported | Not supported |
HDR | HDR photo/video on both cameras | HDR photo only main camera |
Camera extras | 4K@60fps 1080p@240fps 720p@960fps | feature not registered |
📸 Front camera | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Front camera (secondary) | 40 megapixels | 5 megapixels |
Front camera resolution | 7296x5472 pixels | 2592x1944 pixels |
Video recording (secondary) | 4K UHD (3840x2160) | WVGA (800x480) |
Front flash | Not supported | Not supported |
Focal aperture | f/2.2 (aperture) | f/2.2 (aperture) |
Focal length | 26mm lens | 23mm lens |
Sensor size | 1/2.8" inches | feature not registered |
Pixel size | 0.7µm pixel | feature not registered |
🔉 Sound and multimedia | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Loudspeaker | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG | Mono sound (not stereo) |
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.264, H.263, WMV |
Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
USB | USB 3.2 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
Audio output | Type-C reversible connector | 3.5mm jack |
TV output | USB Type-C (reversible) | Not supported |
Bluetooth | 5.2 + A2DP/LE | 4.0 + A2DP |
WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi hotspot |
DLNA | Supported | Not supported |
GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS |
NFC | Supported | Supported |
Infrared port | Not supported | Not supported |
🧭 Sensors | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) | Accelerometer Ambient light sensor ANT+ Compass Proximity sensor |
Vibrating alert | Supported | Supported |
🔋 Battery | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
Battery capacity | 5000 mAh | 1900 mAh |
Charger, watts | 25W Wired fast charging USB Power Delivery 3.0 | 3.5W (5V/0.7A) Wired charging |
Inductive / wireless charging | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging | Not supported |
Talk time autonomy | feature not registered | 12 hours |
Standby | feature not registered | feature not registered |
➕ Other features | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
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: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support | • Colors: Black, White, Blue, Silver, Pink, Gold • Java framework |
☢️ Radiation rate | ||
Galaxy S21 Ultra (SM-G998U1 128GB) | Galaxy A3 (SM-A300YZ) | |
SAR 1.6W/kg (USA, Mexico, etc.) | 0.77W/kg (head), 1.02W/kg (body) | 0.52W/kg (head), 1.08W/kg (body) |
SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.342W/kg (head), 0.231W/kg (body) |