Samsung Galaxy S21 Ultra (SM-G998U1 256GB) vs Samsung Galaxy A13 (SM-A135F/DS 128GB/4GB)
Side by side comparison between Samsung Galaxy S21 Ultra vs Samsung Galaxy A13 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
6.6"
PLS
PLS
1080x2408
50
MP
MP
8mp
4GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 Ultra (SM-G998U1 256GB)
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 |
16 million |
LED flash |
PDAF: phase detection autofocus on both cameras / PDAF: phase detection autofocus |
HDR photo/video on both cameras / HDR photo on both cameras |
f/1.8 (aperture) |
Android 14 |
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 S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
Model | Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) |
Other model names | Galaxy S21 Ultra 5G (SM-G998U1) Unlocked | Galaxy A13 4G SM-A135F/Dual-SIM (4GB RAM) |
Country or region available | USA | (Global, International) |
Brand | Samsung | Samsung |
Release date | 1/29/2021, Announced: 1/14/2021 | 3/23/2022, Announced: 3/4/2022 |
Depth | 8.9 millimeters (0.35 inches) | 8.8 millimeters (0.35 inches) |
Size (width x height) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) | 76.4 x 165.1 millimeters (3.01 x 6.5 in) |
Weight | 227 grams (7.95 ounces) | 195 grams (6.83 ounces) |
Build, materials | Aluminum frame, glass front/back | Plastic 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 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
Display type | Dynamic AMOLED | TFT PLS |
Screen size | 6.8" inches | 6.6" inches |
Screen-to-body ratio | ~89.4% (screen-to-body ratio) | ~83.2% (screen-to-body ratio) |
Display resolution | 1440x3200 pixels (20:9) | 1080x2408 pixels (20:9) |
Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
Pixel density (dot pitch) | 516 PPI | 400 PPI |
Colors | 16 million | 16 million |
Scratch-resistant glass | Gorilla Glass Victus | Not supported |
Refresh rate | 120Hz | 60Hz |
Display features | 1500nits[peak] HDR10+ Always-On Display | Not supported |
🤖 Operating System | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
System version | Android 11 | Android 12 |
Firmware update | Android 14 | Android 14 |
User Interface | One UI 3.1 / 4.1 / 5.1 / 6.0 | One UI 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
Chipset | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) | 64bit: Samsung Exynos 850 (8nm) |
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) | Octa-core, 1 processor: 8x 2GHz ARM Cortex-A55 (Octa-core) |
GPU graphical controller | Qualcomm Adreno 660 (840MHz) | ARM Mali-G52 MP1 |
Performance (benchmark) | AnTuTu: 681099 (v8), 809165 (v9) Geekbench: 3539 (v5.2) GFXBench: 54fps (ES 3.1 onscreen) | AnTuTu: 122822 (v8), 136286 (v9) Geekbench: 588 (v5.1) GFXBench: 5.2fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
RAM memory | 12GB LPDDR5 | 4GB LPDDR4X |
Internal storage | 256GB (220GB available) UFS 3.1 | 128GB (105GB available) eMMC 5.1 |
External storage | Not supported | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
SIM card | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM | 2 slots (Dual-SIM) nano-SIM (4FF) |
Maximum Download / Upload | 5000/1920 Mbps | 300/150 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 850/900/2100 |
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 Cat7 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
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+, TD-LTE, LTE, LTE-A |
Secondary 2G network | CDMA 800/1900, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
Secondary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
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 | LTE Cat7 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
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 | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
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 | (quad camera) 50 megapixels 5MP ultrawide f/2.2123°1/5"1.12µm 2MP macro f/2.4 2MP depth f/2.4 |
Main camera resolution | 12000x9000 pixels | 8160x6120 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/1.8 (aperture) |
Focal length | 26mm lens | 26mm 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 | PDAF: phase detection 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 | Supported |
HDR | HDR photo/video on both cameras | HDR photo on both cameras |
Camera extras | 4K@60fps 1080p@240fps 720p@960fps | feature not registered |
📸 Front camera | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
Front camera (secondary) | 40 megapixels | 8 megapixels |
Front camera resolution | 7296x5472 pixels | 3264x2448 pixels |
Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
Front flash | Not supported | Not supported |
Focal aperture | f/2.2 (aperture) | f/2.2 (aperture) |
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-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
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 | Not supported |
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 S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
USB | USB 3.2 Type-C, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
Audio output | Type-C reversible connector | 3.5mm jack |
TV output | USB Type-C (reversible) | USB Type-C (reversible) |
Bluetooth | 5.2 + A2DP/LE | 5.0 + A2DP/LE |
WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
DLNA | Supported | Not supported |
GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
NFC | Supported | Not supported |
Infrared port | Not supported | Not supported |
🧭 Sensors | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) | Accelerometer Compass Face unlock Fingerprint sensor (side-mounted) Virtual ambient light sensor Virtual proximity sensor |
Vibrating alert | Supported | Supported |
🔋 Battery | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
Battery capacity | 5000 mAh | 5000 mAh |
Charger, watts | 25W Wired fast charging USB Power Delivery 3.0 | 15W Wired fast charging |
Inductive / wireless charging | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging | Not supported |
Talk time autonomy | feature not registered | 36 hours (1.5 days) |
Standby | feature not registered | feature not registered |
➕ Other features | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
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, Peach |
☢️ Radiation rate | ||
Galaxy S21 Ultra (SM-G998U1 256GB) | Galaxy A13 (SM-A135F/DS 128GB/4GB) | |
SAR 1.6W/kg (USA, Mexico, etc.) | 0.77W/kg (head), 1.02W/kg (body) | feature not registered |
SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.367W/kg (head), 1.39W/kg (body) |