Samsung Galaxy Z Flip 4 (SM-F721N 256GB) vs Samsung Galaxy S20 Ultra (SM-G988B)
Side by side comparison between Samsung Galaxy Z Flip 4 vs Samsung Galaxy S20 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
6.7"
AMOLED
AMOLED
1080x2640
12.2
MP
MP
10mp
8GB
RAM
RAM
Octa-core
3700
mAh
mAh
(Non removable)
vs
6.9"
AMOLED
AMOLED
1440x3200
108
MP
MP
40mp
12GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S20 Ultra (SM-G988B)
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 
15 Advantages | 32 Common items in both devices |
| Aluminum frame, flexible plastic screen, glass back / Aluminum frame, glass front/back |
| Dynamic AMOLED |
| HDR10+ |
| 120Hz |
| 16 million |
| LED flash |
| PDAF: phase detection autofocus / PDAF: phase detection autofocus on both cameras |
| +25 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 Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Model | Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) |
| Other model names | 갤럭시 Z 플립4 5G (SM-F721N) | Galaxy S20 Ultra 4G-LTE SM-G988B (Exynos, 12GB RAM) |
| Country or region available |  South Korea |  New Zealand |
| Brand | Samsung | Samsung |
| Release date | 8/25/2022, Announced: 8/10/2022 | 3/15/2020, Announced: 2/11/2020 |
| Depth | 6.9 millimeters (0.27 inches) | 8.8 millimeters (0.35 inches) |
| Size (width x height) | 71.9 x 165.2 millimeters (2.83 x 6.5 in) | 76 x 166.9 millimeters (2.99 x 6.57 in) |
| Weight | 187 grams (6.55 ounces) | 220 grams (7.7 ounces) |
| Build, materials | Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus+ Folded: 15.9 x 71.9 x 84.9 mm | Aluminum frame, glass front/back |
| Protection against water and others | IPX8 certified: water resistant up to 1.5 meters and 30min | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Display type | Dynamic AMOLED | Dynamic AMOLED |
| Screen size | 6.7" inches | 6.9" inches |
| Screen-to-body ratio | ~85.4% (screen-to-body ratio) | ~90.6% (screen-to-body ratio) |
| Display resolution | 1080x2640 pixels | 1440x3200 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 426 PPI | 509 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 6 |
| Refresh rate | 120Hz | 120Hz |
| Display features | 1200nits[peak] HDR10+ Always-On Display Extra display: Super AMOLED 1.9" (260x512), Gorilla Glass Victus+ | HDR10+ Always-On Display 120Hz@FHD 60Hz@QHD |
🤖 Operating System | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| System version | Android 12 | Android 10 |
| Firmware update | Android 14 | Android 13 |
| User Interface | One UI 4.1 / 5.1 / 6.0 | One UI 2.5 / 3.1 / 4.1 / 5.0 |
⚙️ Processor | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Chipset | 64bit: Qualcomm Snapdragon 8+ Gen 1 (SM8475) (4nm) | 64bit: Samsung Exynos 990 (7nm) |
| CPU | Octa-core, 3 processors: 1x 3.19GHz ARM Cortex-X2 (Single-core) 3x 2.75GHz ARM Cortex-A710 (Triple-core) 4x 2GHz ARM Cortex-A510 (Quad-core) | Octa-core, 3 processors: 2x 2.73GHz Mongoose M5 (Dual-core) 2x 2.5GHz ARM Cortex-A76 (Dual-core) 4x 2GHz ARM Cortex-A55 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 730 (818MHz) | ARM Mali-G77 MP11 (800MHz) |
| Performance (benchmark) | AnTuTu: 685765 (v8), 800001 (v9) Geekbench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| RAM memory | 8GB LPDDR5 | 12GB LPDDR5 |
| Internal storage | 256GB (218GB available) UFS 3.1 | 128GB (104GB available) UFS 3.0 |
| External storage | Not supported | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| 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 | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM |
| Maximum Download / Upload | 3000/1024 Mbps | 2000/316 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 | 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 Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 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 | SA/NSA/Sub6 (77, 78) | Not supported |
| Primary data network | GPRS, EDGE, 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 | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | Not supported |
📷 Camera | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Back camera (main camera) | (dual camera) 12.2 megapixels 12MP ultrawide f/2.2123°1.12µm | (quad camera) 108 megapixels 48MP periscope telephoto f/3.5103mm1/2.0"0.8µmPDAFOIS4x-optical-zoom10x-hybrid-zoom 12MP ultrawide f/2.213mm1.4µmSuper-Steady-video 0.3MP TOF 3D f/1.0 |
| Main camera resolution | 4032x3024 pixels | 12000x9000 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 60 fps | 8K UHD (7680x4320) 24 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 24mm lens | 26mm lens |
| Sensor size | 1/1.76" inches | 1/1.33" inches |
| Pixel size | 1.8µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | 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/video on both cameras | HDR photo/video on both cameras |
| Camera extras | 4K@30/60fps 1080p@30/60/240fps 720p@960fps HDR10+ Slow motion | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Front camera (secondary) | 10 megapixels | 40 megapixels |
| Front camera resolution | 3872x2592 pixels | 7296x5472 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.4 (aperture) | f/2.2 (aperture) |
| Focal length | 26mm lens | 26mm lens |
| Sensor size | 1/3" inches | feature not registered |
| Pixel size | 1.22µm pixel | 0.7µm pixel |
🔉 Sound and multimedia | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Loudspeaker | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | 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 Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| 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 | 5.2 + 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/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor | Accelerometer Ambient light sensor ANT+ Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3700 mAh | 5000 mAh |
| Charger, watts | 25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 | 45W Wired fast charging USB Power Delivery 3.0 |
| Inductive / wireless charging | 15W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging | 15W Qi wireless charging (Qi/PMA) 9W Reverse wireless charging |
| Talk time autonomy | 34 hours (1.4 days) | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| 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: Graphite, White, Bora Purple, Pink Gold, Blue, Yellow, Navy, Khaki, Red • Samsung Pay (Visa, MasterCard) | • Colors: Cosmic Black, Cosmic Grey, Cloud White • Ultrasonic fingerprint sensor • Bixby • Samsung DeX • Samsung Pay (MST, NFC) |
☢️ Radiation rate | ||
| Galaxy Z Flip 4 (SM-F721N 256GB) | Galaxy S20 Ultra (SM-G988B) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.589W/kg (head), 0.972W/kg (body) | 0.74W/kg (head), 1.12W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.319W/kg (head), 1.557W/kg (body) |