Infinix Zero Flip (512GB) vs Samsung Galaxy S21 Ultra (SM-G998U1 256GB)
Side by side comparison between Infinix Zero Flip vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
6.9"
AMOLED
AMOLED
1080x2640
50
MP
MP
50mp
8GB
RAM
RAM
Octa-core
4720
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-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!
9 Advantages 
25 Advantages | 27 Common items in both devices |
| UFS 3.1 |
| LTPO AMOLED / Dynamic AMOLED |
| 120Hz |
| 16 million |
| PDAF: phase detection autofocus on both cameras |
| OIS: Optical stabilization |
| BSI sensor |
| +20 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 | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Model | Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) |
| Other model names | Infinix Zero Flip X6962 | Galaxy S21 Ultra 5G (SM-G998U1) Unlocked |
| Country or region available |  (Global, International) |  USA |
| Brand | Infinix | Samsung |
| Release date | 10/1/2024, Announced: 9/27/2024 | 1/29/2021, Announced: 1/14/2021 |
| Depth | 7.6 millimeters (0.3 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 73.4 x 170.4 millimeters (2.89 x 6.71 in) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) |
| Weight | 195 grams (6.83 ounces) | 227 grams (7.95 ounces) |
| Build, materials | Plastic body Folded: 16 x 73.4 x 87.5 mm | 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 | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Display type | LTPO AMOLED | Dynamic AMOLED |
| Screen size | 6.9" inches | 6.8" inches |
| Screen-to-body ratio | ~86.1% (screen-to-body ratio) | ~89.4% (screen-to-body ratio) |
| Display resolution | 1080x2640 pixels | 1440x3200 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 413 PPI | 516 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass Victus |
| Refresh rate | 120Hz | 120Hz |
| Display features | 1400nits[peak] Extra display: AMOLED 3.64" (1056x1066), 120Hz, 413PPI, Gorilla Glass Victus | 1500nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| System version | Android 14 | Android 11 |
| Firmware update | Android 16 | Android 15 |
| User Interface | XOS 14 / 15 / 16 | One UI 3.1 / 4.1 / 5.1 / 6.0 / 7.0 |
⚙️ Processor | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Chipset | 64bit: MediaTek Dimensity 8020 (6nm) | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) |
| CPU | Octa-core, 2 processors: 4x 2.6GHz ARM Cortex-A78 (Quad-core) 4x 2GHz ARM Cortex-A55 (Quad-core) | 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) |
| GPU graphical controller | ARM Mali-G77 MC9 | Qualcomm Adreno 660 (840MHz) |
| Performance (benchmark) | AnTuTu: 729420 (v10) | AnTuTu: 681099 (v8), 809165 (v9) Geekbench: 3539 (v5.2) GFXBench: 54fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| RAM memory | 8GB LPDDR4X | 12GB LPDDR5 |
| Internal storage | 512GB (458GB available) UFS 3.1 | 256GB (220GB available) UFS 3.1 |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | 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 | 2000/1024 Mbps | 5000/1920 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 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 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat15 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42) VoLTE | 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 |
| Primary 5G network | SA/NSA (1, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78) | SA/NSA/Sub6 (2, 5, 25, 41, 66, 71) mmWave (260, 261) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
| Secondary 2G network | GSM 850/900/1800/1900 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat15 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42) VoLTE | 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 |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
📷 Camera | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Back camera (main camera) | (dual camera) 50 megapixels 50MP ultrawide f/2.2115°1/2.8"0.64µmPDAF | (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) | 4K UHD (3840x2160) 30 fps | 8K UHD (7680x4320) 24 fps |
| Flash | Dual-LED on both cameras | LED flash |
| Focal aperture | f/1.9 (aperture) | f/1.8 (aperture) |
| Focal length | 24mm (lens) | 26mm (lens) |
| Sensor size | 1/1.57" inches | 1/1.33" inches |
| Pixel size | 1µm pixel | 1.8µm pixel |
| Autofocus | PDAF: phase detection autofocus on both cameras | PDAF: phase detection autofocus on both cameras |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical 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 only main camera | HDR photo/video on both cameras |
| Camera extras | 4K@30fps 1080p@30/60/120fps | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Front camera (secondary) | 50 megapixels | 40 megapixels |
| Front camera resolution | 8160x6120 pixels | 7296x5472 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | 4K UHD (3840x2160) |
| Front flash | Dual-LED | Not supported |
| Focal aperture | f/2.5 (aperture) | f/2.2 (aperture) |
| Focal length | 25mm (lens) | 26mm (lens) |
| Sensor size | 1/2.76" inches | 1/2.8" inches |
| Pixel size | 0.64µm pixel | 0.7µm pixel |
🔉 Sound and multimedia | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Loudspeaker | Stereo sound 24-bit/192kHz Hi-Res audio Tuned by JBL | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | 2 microphones | 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 | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | Type-C reversible connector | Type-C reversible connector |
| TV output | USB Type-C (reversible) | USB Type-C (reversible) |
| Bluetooth | 5.4 + A2DP/LE | 5.2 + 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/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Sensors | Accelerometer Compass Fingerprint sensor (side-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4720 mAh | 5000 mAh |
| Charger, watts | 70W Wired fast charging 10W Reverse charging by cable | 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 | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| 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: Rock Black, Blossom Glow | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support |
☢️ Radiation rate | ||
| Infinix Zero Flip (512GB) | Galaxy S21 Ultra (SM-G998U1 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.77W/kg (head), 1.02W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |