Motorola Moto G31 (128GB/4GB) vs Samsung Galaxy S21 Ultra (SM-G998B 128GB)
Side by side comparison between Motorola Moto G31 vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
6.4"
AMOLED
AMOLED
1080x2400
50
MP
MP
13mp
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 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!
25 Common items in both devices |
128GB (108GB available) / 128GB (101GB available) |
16 million |
LED flash |
PDAF: phase detection autofocus / PDAF: phase detection autofocus on both cameras |
BSI sensor |
HDR photo on both cameras / HDR photo/video on both cameras |
f/1.8 (aperture) |
+18 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 | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Model | Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) |
Other model names | Lenovo Moto G31 XT2173-1, XT2173-2, XT2173-3 | Galaxy S21 Ultra 5G (SM-G998B Single-SIM) |
Country or region available | ![]() ![]() (Europe), (Global, International) | ![]() Australia |
Brand | Motorola | Samsung |
Release date | 12/6/2021, Announced: 11/18/2021 | 1/29/2021, Announced: 1/14/2021 |
Depth | 8.6 millimeters (0.34 inches) | 8.9 millimeters (0.35 inches) |
Size (width x height) | 73.87 x 161.89 millimeters (2.91 x 6.37 in) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) |
Weight | 181 grams (6.34 ounces) | 227 grams (7.95 ounces) |
Build, materials | Plastic body, glass front | Aluminum frame, glass front/back |
Protection against water and others | Water repellent nano-coating (don't immerse) | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Display type | AMOLED | Dynamic AMOLED |
Screen size | 6.4" inches | 6.8" inches |
Screen-to-body ratio | ~82.7% (screen-to-body ratio) | ~89.4% (screen-to-body ratio) |
Display resolution | 1080x2400 pixels (20:9) | 1440x3200 pixels (20:9) |
Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
Pixel density (dot pitch) | 411 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 | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
System version | Android 11 | Android 11 |
Firmware update | feature not registered | Android 15 |
User Interface | feature not registered | One UI 3.1 / 4.1 / 5.1 / 6.0 / 7.0 |
⚙️ Processor | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Chipset | 64bit: MediaTek Helio G85 (12nm) | 64bit: Samsung Exynos 2100 (5nm) |
CPU | Octa-core, 2 processors: 2x 2GHz ARM-Cortex-A75 (Dual-core) 6x 1.8GHz ARM-Cortex-A55 (Hexa-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 | ARM Mali-G52 MC2 (1GHz) | ARM Mali-G78 MP14 (854MHz) |
Performance (benchmark) | AnTuTu: 228765 (v9) | AnTuTu: 657150 (v8), 727634 (v9) Geekbench: 3457 (v5.2) GFXBench: 51fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
RAM memory | 4GB LPDDR4X | 12GB LPDDR5 |
Internal storage | 128GB (108GB available) eMMC 5.1 | 128GB (101GB available) UFS 3.1 |
External storage | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Not supported |
📶 Mobile networks | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Dual-SIM | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) | Dual-SIM Standby - Call active on one sim card |
SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM |
Maximum Download / Upload | 300/150 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 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
Primary 4G network | LTE Cat7 (1, 2, 3, 5, 7, 8, 18, 19, 20, 26, 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, LTE-A | 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 | UMTS 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
Secondary 4G network | LTE Cat7 (1, 2, 3, 5, 7, 8, 18, 19, 20, 26, 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 |
Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Back camera (main camera) | (triple camera) 50 megapixels 8MP ultrawide f/2.2118°1/4"1.12µm 2MP macro 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 | 8160x6120 pixels | 12000x9000 pixels |
Video recording (primary) | Full HD (1920x1080) 30 fps | 8K UHD (7680x4320) 24 fps |
Flash | LED flash | LED flash |
Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
Focal length | feature not registered | 26mm (lens) |
Sensor size | feature not registered | 1/1.33" inches |
Pixel size | 0.64µm pixel | 1.8µm pixel |
Autofocus | PDAF: phase detection 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 | 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 | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Front camera (secondary) | 13 megapixels | 40 megapixels |
Front camera resolution | 4128x3096 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 | 1.12µm pixel | 0.7µm pixel |
🔉 Sound and multimedia | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Loudspeaker | Mono sound (not stereo) Dolby Atmos | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
Active noise cancellation | 2 microphones or more | 3 microphones |
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 | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 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 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) 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 | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
NFC | Not supported | Supported |
Infrared port | Not supported | Not supported |
🧭 Sensors | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope 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 | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 128GB) | |
Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
Battery capacity | 5000 mAh | 5000 mAh |
Charger, watts | 10W Wired 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 | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 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: Mineral Grey, Baby Blue | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support |
☢️ Radiation rate | ||
Moto G31 (128GB/4GB) | Galaxy S21 Ultra (SM-G998B 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.) | feature not registered | 0.714W/kg (head), 1.58W/kg (body) |