Compare / Samsung Galaxy Z Fold8 Ultra vs 18 Fold

Samsung Galaxy Z Fold8 Ultra vs 18 Fold

A side-by-side comparison of the Samsung Galaxy Z Fold8 Ultra and the 18 Fold, covering display, chipset, memory, camera, battery and build.

18 Fold
Xiaomi
18 Fold

Overview

Display
Samsung Galaxy Z Fold8 Ultra
8inch
Foldable Dynamic LTPO AMOLED 2X · 120 Hz
2256 × 2504 · 422 PPI
18 Fold
7.58inch
LTPO AMOLED · 120 Hz
2364 × 1672 · 382 PPI
Chip
Samsung Galaxy Z Fold8 Ultra
Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 (3 nm)
Octa-core (2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
Adreno 840 (1.3GHz) · Android 17
18 Fold
XRing O3 (3 nm)
10-core 4.35 GHz
Arm G2-Ultra NX MC16 · Android 17
Memory
Samsung Galaxy Z Fold8 Ultra
12 / 16GB RAM
256 GB · 512 GB · 1 TB storage
No card slot
18 Fold
12 / 16GB RAM
256 GB · 512 GB · 1 TB storage
No card slot
Camera
Samsung Galaxy Z Fold8 Ultra
200MP Main
10 MP Telephoto
50 MP Ultra Wide
10 MP selfie
8K@30fps video
18 Fold
200MP Main
50 MP Telephoto
50 MP Ultra Wide
16 MP selfie
8K@24fps video
Battery
Samsung Galaxy Z Fold8 Ultra
5,000mAh
45 W wired · 20 W wireless
18 Fold
6,000mAh
67 W wired · 50 W wireless
Build
Samsung Galaxy Z Fold8 Ultra
215g
158.4 × 143.2 × 4.1 mm
IP48
18 Fold
219g
163.8 × 117.8 × 5 mm
IP58
Connectivity
Samsung Galaxy Z Fold8 Ultra
5GWi-Fi 7Bluetooth 6.0NFCNano-SIM + eSIM + eSIM (max 2 at a time)USB Type-C 3.2
18 Fold
5GWi-Fi 7Bluetooth 6.0NFCNano-SIM + Nano-SIMUSB Type-C 3.2 Gen2

Specifications

Samsung Galaxy Z Fold8 Ultra

Technology
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands

1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 38, 39, 40, 41, 66 - International

1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 48, 66, 71 - USA

5G bands

1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - International

1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 41, 66, 71, 77, 78, 257, 258, 260, 261 SA/NSA/Sub6/mmWave - USA

Speed
HSPA, LTE, 5G

18 Fold

Technology
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66
5G bands
1, 2, 3, 5, 7, 8, 12, 13, 18, 20, 25, 26, 28, 34, 38, 39, 40, 41, 48, 66, 77, 78, 79 SA/NSA/Sub6
Speed
HSPA, LTE, 5G

Samsung Galaxy Z Fold8 Ultra

Announced
2026, July 22
Status
Available. Released 2026, July 22

18 Fold

Announced
2026, September 07
Status
Available. Released 2026, September 07

Samsung Galaxy Z Fold8 Ultra

Dimensions

Unfolded: 158.4 x 143.2 x 4.1 mm

Folded: 158.4 x 72.8 x 8.9 mm

Weight
215 g (7.58 oz)
Build
Glass front (Gorilla Glass Victus Ceramic 3) (folded), plastic front (unfolded), glass back (Gorilla Glass Victus 2), aluminum frame
SIM

Nano-SIM + eSIM + eSIM (max 2 at a time)

IP48 dust and water resistant (dust > 1mm; immersible up to 1.5m for 30 min)

Advanced Armor Aluminum

18 Fold

Dimensions

Unfolded: 163.8 x 117.8 x 5.0 mm

Folded: 83.6 x 117.8 x 10.7 mm

Weight
219 g (7.72 oz)
Build
Glass front (Xiaomi Dragon Crystal Glass 3) (folded), plastic front (unfolded), glass back, aluminum frame
SIM

Nano-SIM + Nano-SIM

IP58/IP59 dust protected and water resistant (high pressure water jets; immersible up to 1m for 30 min)

Samsung Galaxy Z Fold8 Ultra

Type
Foldable Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 3000 nits (peak)
Size
8.0 inches, 204.4 cm2 (~90.1% screen-to-body ratio)
Resolution

2256 x 2504 pixels (~422 ppi density)

Anti-reflective coating

Flex Titanium technology

Cover display:

Dynamic LTPO AMOLED 2X, 120Hz, Corning Gorilla Glass Ceramic 3

6.5 inches, 1080 x 2520 pixels, 422 ppi

18 Fold

Type
LTPO AMOLED120HzHDR10+Dolby VisionHDR Vivid4000 nits (peak)
Size
7.58 inches, 174.8 cm2 (~90.6% screen-to-body ratio)
Resolution

2364 x 1672 pixels (~382 ppi density)

Cover display:

LTPO AMOLED, 120Hz, Xiaomi Dragon Crystal Glass 3

5.38 inches, 1168 x 1712 pixels

HDR10+, Dolby Vision, HDR Vivid, 4000 nits (peak)

Samsung Galaxy Z Fold8 Ultra

OS
Android 17, up to 7 major OS updates, One UI 9
Chipset
Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 (3 nm)
CPU
Octa-core (2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
GPU
Adreno 840 (1.3GHz)

18 Fold

OS
Android 17, HyperOS 4
Chipset
XRing O3 (3 nm)
CPU
10-core 4.35 GHz
GPU
Arm G2-Ultra NX MC16

Samsung Galaxy Z Fold8 Ultra

Card slot
No
Internal

256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM

UFS 4.x

18 Fold

Card slot
No
Internal

256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM

UFS 4.1

Samsung Galaxy Z Fold8 Ultra

Triple

200 MP, f/1.7, 23mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS

10 MP, f/2.4, 69mm (telephoto), 1/3.94", 1.0µm, PDAF (17cm - ∞), OIS, 3x optical zoom

50 MP, f/1.9, 120˚ (ultrawide), 1/2.51", 0.7µm, multi-directional PDAF

Features
LED flash, HDR, panorama
Video
8K@30fps4K@30/60/120fps1080p@30/60/120/240fps10-bit HDRHDR10+gyro-EISOIS

18 Fold

Triple

200 MP, f/1.7, 23mm (wide), 1/1.56", 0.5µm, PDAF, OIS

50 MP, f/2.8, 80mm (telephoto), PDAF, OIS, 3.x optical zoom

50 MP, f/2.4, 17mm (ultrawide)

Features
Laser AFcolor spectrum sensorLeica lensesLED flashHDRpanorama
Video
8K@24fps, 4K@30/60fps (Dolby Vision), 1080p@30/60/120/960fps, gyro-EIS, OIS

Samsung Galaxy Z Fold8 Ultra

Single

10 MP, f/2.2, 18mm (ultrawide), 1/3.52", 1.12µm

Cover camera:

10 MP, f/2.2, 24mm (wide), 1/3.52", 1.12µm

Features
HDR
Video
4K@30/60fps, 1080p@30/60fps, gyro-EIS

18 Fold

Single

16 MP, f/2.2, 21mm (wide)

Cover camera:

16 MP, f/2.2, 21mm (wide)

Features
HDR
Video
1080p@30/60fps

Samsung Galaxy Z Fold8 Ultra

Loudspeaker
Yes, with stereo speakers
3.5mm jack

No

High-bitrate audio support

18 Fold

Loudspeaker
Yes, with stereo speakers, Dolby Atmos
3.5mm jack

No

24-bit/192kHz Hi-Res & Hi-Res wireless audio

Samsung Galaxy Z Fold8 Ultra

WLAN
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Bluetooth
6.0, A2DP, LE, aptX HD
Positioning
GPS, GALILEO, GLONASS, BDS, QZSS
NFC
Yes
Radio
No
USB
USB Type-C 3.2, OTG

18 Fold

WLAN
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band
Bluetooth
6.0, A2DP, LE, LHDC 5
Positioning
GPS (L1+L5)BDS (B1I+B1C+B1a)GALILEO (E1+E5a)QZSS (L1+L5)GLONASSNavIC
NFC
Yes
Infrared port
Yes
Radio
No
USB
USB Type-C 3.2 Gen2, OTG

Samsung Galaxy Z Fold8 Ultra

Sensors

Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer

Samsung DeX (desktop experience support)

Ultra Wideband (UWB) support

18 Fold

Sensors

Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer

Ultra Wideband (UWB) support

Samsung Galaxy Z Fold8 Ultra

Type
Si/C Li-Ion 5000 mAh
Charging

45W wired, PD3.0, QC2.0, 67% in 30 min

20W wireless (Qi2.2)

4.5W reverse wireless

18 Fold

Type
Si/C Li-Ion 6000 mAh
Charging

67W wired, PD3.0, 50W PPS

50W wireless

Reverse wired

Samsung Galaxy Z Fold8 Ultra

Colors
Graphite, Cream, Violet Shadow
Models
SM-F976B, SM-F976B/DS, SM-F976U, SM-F976U1
SAR
1.10 W/kg (head)     1.25 W/kg (body)    
SAR EU
0.82 W/kg (head)     1.17 W/kg (body)    
Price
£ 1,398.00 / € 1,404.66 / $ 1,899.99

18 Fold

Colors
Gray, Silver, Red, Rose gold
Price
About 1400 EUR (price in China)

Samsung Galaxy Z Fold8 Ultra

Performance

AnTuTu: 2160310 (v10), 2970196 (v11)

GeekBench: 11124 (v6)

3DMark: 6772 (Wild Life Extreme)

Display
1432 nits max brightness (measured)
Loudspeaker
-29.3 LUFS (Average)
Battery
Active use score 13:06h

18 Fold

Not listed for this device

Samsung Galaxy Z Fold8 Ultra

Energy
Class A
Battery
51:10h endurance, 1200 cycles
Free fall
Class A (210 falls)
Repairability
Class C

18 Fold

Not listed for this device

How the Samsung Galaxy Z Fold8 Ultra and 18 Fold differ

  • The 18 Fold has a larger battery, 6000 mAh against 5000 mAh on the Samsung Galaxy Z Fold8 Ultra.
  • The Samsung Galaxy Z Fold8 Ultra has the bigger screen, 8 inches against 7.58 inches.
  • The 18 Fold is the newer of the two, released in August 2026.