Product
Xiaomi Mix Fold 2
Xiaomi Mix Fold 2
Samsung Galaxy Z Flip4
Samsung Galaxy Z Flip4
Battery
Charging 67W wired, PD3.0, QC4, 100% in 40 min 25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless
Type Li-Po 4500 mAh Li-Po 3700 mAh
Body
Build - Plastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frame
Dimensions Unfolded: 161.1 x 144.7 x 5.4 mm Folded: 161.1 x 73.9 x 11.2 mm Unfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm
SIM Nano-SIM + Nano-SIM Nano-SIM + eSIM
Weight 262 g (9.24 oz) 187 g (6.60 oz)
  - IPX8 water resistant (up to 1.5m for 30 min) Armor aluminum frame
Comms
Bluetooth 5.2, A2DP, LE, aptX HD, aptX Adaptive 5.2, A2DP, LE
Infrared port Yes -
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) GPS, GLONASS, GALILEO, BDS
Radio No No
USB USB Type-C USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Display
Protection Schott UTG glass -
Resolution 1914 x 2160 pixels (~360 ppi density) 1080 x 2640 pixels (~426 ppi density)
Size 8.02 inches, 206.0 cm2 (~88.4% screen-to-body ratio) 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
Type Foldable LTPO2 OLED, 1B colors, 120Hz, HDR10+, Dolby Vision, 1000 nits (HBM), 1300 nits (peak) Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
  Cover display: AMOLED, 120Hz, HDR10+, Dolby Vision, 1000 nits (HBM), 1300 nits (peak) 6.56 inches, 1080 x 2520 pixels, 21:9 ratio Corning Gorilla Glass Victus Cover display: Super AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2022, August 11 2022, August 10
Status Available. Released 2022, August 26 Available. Released 2022, August 25
Main Camera
Dual - 12 MP, f/1.8, 24mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 12 MP, f/2.2, 13mm, 123˚ (ultrawide), 1/3.06", 1.12µm
Features Color spectrum sensor, Dual-LED flash, HDR, panorama, Leica lenses LED flash, HDR, panorama
Triple 50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.6, 45mm (telephoto), dual pixel PDAF, 2x optical zoom 13 MP, f/2.4, 15mm, 123˚ (ultrawide), 1.12µm, AF -
Video 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS 4K@30/60fps, 1080p@60/240fps, 720p@960fps, HDR10+
Memory
Card slot No No
Internal 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM 128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM
  UFS 3.1 UFS 3.1
Misc
Colors Black, Gold Bora Purple, Graphite, Pink Gold, Blue, Yellow, White, Navy, Khaki, Red
Models 22061218C SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F7210
SAR - 1.02 W/kg (head)     0.94 W/kg (body)    
SAR EU - 1.15 W/kg (head)     1.20 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
5G bands 1, 3, 5, 8, 20, 28, 38, 40, 41, 77, 78, 79 SA/NSA 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
Speed HSPA, LTE (CA), 5G HSPA, LTE (6CA), 5G
Technology GSM / CDMA / HSPA / EVDO / LTE / 5G GSM / CDMA / HSPA / EVDO / LTE / 5G
  CDMA2000 1xEV-DO SA/NSA/Sub6/mmWave - USA
Our Tests
Battery (old) Endurance rating 82h -
Camera Photo / Video -
Display 1054 nits max brightness (measured) -
Loudspeaker -26.2 LUFS (Good) -
Performance AnTuTu: 1050139 (v9) GeekBench: 4368 (v5.1) GFXBench: 52fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) 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) Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU Adreno 730 Adreno 730
OS Android 12, MIUI Fold 13 Android 12, upgradable to Android 14, One UI 6.1.1
Selfie camera
Features HDR, panorama HDR
Single 20 MP, f/2.4, 23mm (wide) 10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm
Video 1080p@30/60fps, 720p@120fps 4K@30fps
Sound
3.5mm jack No No
Loudspeaker Yes, with stereo speakers Yes, with stereo speakers
  24-bit/192kHz Hi-Res audio Tuned by Harman Kardon Snapdragon Sound 32-bit/384kHz audio Tuned by AKG
Tests
Battery (old) - Endurance rating 75h
Camera - Photo / Video
Display - 919 nits max brightness (measured)
Loudspeaker - -27.5 LUFS (Good)
Performance - AnTuTu: 685754 (v8) | 800001 (v9) GeekBench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen)