THE PHONE FILE · Samsung
Galaxy Z Flip4.
Know your phone. Look beyond the headline specs. Explore its hardware, reported SAR, and a more thoughtful way to use it.
01 / HARDWARE
The details, beautifully clear.
General
- Technology
- GSM / CDMA / HSPA / EVDO / LTE / 5G
- Announced
- August 10, 2022
- Model Names
- SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W
Display
- Type
- Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
- Size
- 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
- Resolution
- 1080 x 2640 pixels (~426 ppi density)
Camera
- Main Camera
- Dual Camera: 12 MP, f/1.8, 24mm (wide), 1/1.76", 1.8m, Dual Pixel PDAF, OIS ; 12 MP, f/2.2, 123 (ultrawide), 1.12m
- Main Features
- LED flash, HDR, panorama
- Video
- 4K@30/60fps, 1080p@60/240fps, 720p@960fps, HDR10+
- Selfie Camera
- Single Camera: 10 MP, f/2.4, 26mm (wide), 1.22m
- Selfie Camera Features
- HDR
- Selfie Camera Video
- 4K@30fps
Battery
- Type
- Li-Po 3700 mAh, non-removable
- Charging
- 25W wired, 50% in 30 min (advertised) ; 15W wireless ; 4.5W reverse wireless
Hardware
- Software (source record)
- Android 12, upgradable to Android 13, One UI 5
- Chipset
- Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
- CPU
- Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
- GPU
- Adreno 730
- Internal Storage
- 128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM
- Card Slot
- No
- Sensors
- Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Connectivity
- Wi-fi
- Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
- Bluetooth
- 5.2, A2DP, LE
- USB
- USB Type-C 2.0, USB On-The-Go
- GPS
- GPS, GLONASS, GALILEO, BDS
- NFC
- Yes
- Radio
- No
Sound
- Loudspeaker
- Yes, with stereo speakers
- 3.5mm Jack
- No
Design
- Type
- Bar
- Dimensions
- Unfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm
- Weight
- 187 g (6.60 oz)
- Colors
- Bora Purple, Graphite, Pink Gold, Blue, Yellow, White, Navy, Khaki, Red
- Build
- Plastic front (opened), glass back (Gorilla Glass Victus+), aluminum frame
Network
- Speed
- HSPA, LTE-A (6CA), 5G
- SIM
- Nano-SIM and eSIM
- 2G Network
- GSM 850 / 900 / 1800 / 1900
- 3G Network
- HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
- 4G Network
- LTE
- 5G Network
- SA/NSA/Sub6/mmWave
No matching specifications. Try a different word.
Specifications from the RF Safe source record. Regional variants can differ; source software details may predate later updates.
02 / REPORTED SAR
Six readings. More context.
SAR describes radiofrequency energy absorbed per unit of tissue mass under specified test conditions. These reported values are not a measurement of your everyday exposure or a safety score.
Cellular only
Cellular + Wi-Fi
Values match the rounded RF Safe dataset used in our comparison tool. Test separation and averaging details are not included in that dataset; check the original filing for your exact variant. These are phone values, not case-performance results.
03 / VISUAL EXPLORER
Take a closer look.
RF Safe’s age-based illustrations repeat the phone’s reported SAR values across age panels. The shading is illustrative; it does not measure absorption in children or predict an individual’s dose.
04 / YOUR NEXT STEP
Thoughtful design. Better habits.
Explore QuantaCase and the usage guide. Check the exact model before choosing a case—fit matters.
Browse Samsung cases ↗An exact case is not linked yet. Browse the brand catalog for current listings.
The way you use it matters.
Get to know the flap, the orientation, and the everyday habits behind the design.
Read the usage guide →
