Xiaomi 18 Fold vs Samsung Galaxy S27 Ultra
One of these devices is still rumored — its specs are not official yet and may change before launch.
Which is better?
- Samsung Galaxy S27 Ultra wins narrowly over Xiaomi 18 Fold — 8.1 overall against 7.2.
- Samsung Galaxy S27 Ultra takes 3 of the 6 categories both phones are scored in.
- Xiaomi 18 Fold has the bigger battery — 6,000 mAh against 5,700 mAh.
- Xiaomi 18 Fold gives you the larger screen — 7.6 inches against 6.9 inches.
- Xiaomi 18 Fold charges faster — 67W wired against 60W.
Category scores
| Category | Xiaomi 18 Fold | Samsung Galaxy S27 Ultra |
|---|---|---|
| Performance | 5.3 | 7.9Better |
| Camera | 7.9Tie | 7.9Tie |
| Display | 7.9 | 8.9Better |
| Battery | 8.5Tie | 8.5Tie |
| Design & Build | 6.2 | — |
| Software | 6.3 | 7.4Better |
| Audio | 7.8 | — |
| Call Quality | 8.3Tie | 8.3Tie |
Open the interactive comparisonRadar chart, winner highlights and a differences-only view.
Full specifications side by side
| Specification | Xiaomi 18 Fold | Samsung Galaxy S27 Ultra |
|---|---|---|
| Network | ||
| Bands 2g | GSM: B2 / B3 / B5 / B8 | — |
| Bands 3g | WCDMA: B1 / B2 / B4 / B5 / B6 / B8 / B19 | — |
| Bands 4g | FDD-LTE: B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B17 / B18 / B19 / B20 / B25 / B26 / B28 / B66; TDD-LTE: B34 / B38 / B39 / B40 / B41 / B42 / B48 | — |
| Bands 5g | n1 / n2 / n3 / n5 / n7 / n8 / n12 / n13 / n18 / n20 / n25 / n26 / n28 / n34 / n38 / n39 / n40 / n41 / n48 / n66 / n77 / n78 / n79 | — |
| Technology | GSM / WCDMA / LTE / 5G | 5G |
| Launch | ||
| Release Date | 2026, September 10 | Exp. announcement 2027 |
| Status | Available. Released 2026, September 10 | Rumored. Exp. release 2027 |
| Body | ||
| Build | Xiaomi Dragon Bone hinge, dual-layer UTG ultra-thin glass; IP58 dust and water resistance | — |
| Dimensions | 117.8 x 163.8 x 5.02 mm (unfolded) / 117.8 x 83.6 x 10.68 mm (folded) | 163.8 x 78.3 x 8.0 mm |
| Sim | Dual Nano-SIM | Nano-SIM + eSIM |
| Weight | 219 g | — |
| Display | ||
| Protection | Xiaomi Dragon Crystal Glass (outer display); dual-layer UTG (inner display) | — |
| Resolution | 2364 x 1672 pixels (inner display); 1712 x 1168 pixels (outer display) | 1440 x 3120 pixels |
| Size | 7.58 inches (inner display); 5.38 inches (outer display) | 6.9 inches |
| Type | Inner display: 7.58-inch AMOLED (Pol-less), up to 120Hz refresh rate, up to 240Hz touch sampling rate, P3 colour gamut, 4000 nits multi-scene peak brightness, full-brightness DC dimming, HDR10+, HDR Vivid, Dolby Vision, foldable UTG glass; Outer display: 5.38-inch AMOLED, up to 120Hz refresh rate, up to 300Hz touch sampling rate, P3 colour gamut, 4000 nits multi-scene peak brightness, Xiaomi Dragon Crystal Glass | Dynamic AMOLED 2X, LTPO, 120Hz, Privacy Display |
| Platform | ||
| Chipset | Xiaomi Xring O3 AI flagship SoC (TSMC 3nm process) | Snapdragon 8 Elite Extreme Gen 6 (for Galaxy) |
| Cpu | 10-core all-big-core processor, up to 4.35GHz | Octa-core |
| Gpu | 16-core G2-Ultra NX GPU; 4-core Xring NPU | Adreno 850 |
| Os | Xiaomi HyperOS 4 | Android 17 |
| Memory | ||
| Internal | 256GB / 512GB UFS 4.1 storage with 12GB LPDDR5X RAM; 512GB UFS 4.1 storage with 16GB LPDDR5X RAM; 1TB UFS 4.1 storage with 16GB LPDDR6 RAM (up to 16GB + 1TB) | 256GB 12GB RAM, 512GB 12GB RAM, 1TB 16GB RAM |
| Card Slot | — | No |
| Main Camera | ||
| Features | Leica native dual image quality, Dolby Vision, Super Night Scene, Master Lens Package, dynamic photos, motion tracking focus, front/rear dual view | OIS, PDAF, LED flash |
| Triple | 200MP Leica main camera, f/1.7, 23mm equivalent focal length, OIS; 50MP Leica periscope telephoto camera, f/2.8, 3.5x optical zoom, 7x optical-quality zoom, OIS; 50MP Leica ultra-wide camera, f/2.4 | 200 MP (wide), OIS + 50 MP (ultrawide) + 50 MP (periscope telephoto, 5x), OIS |
| Video | 8K video at 24fps; 4K video at 30 / 60fps; 1080p video at 30 / 60fps; 720p video at 30fps; slow motion: 1080p 120 / 240 / 960fps, 720p 120 / 240 / 960fps | — |
| Selfie Camera | ||
| Single | 16MP front camera, f/2.2, 90-degree field of view | 16 MP |
| Video | 1080p video at 30 / 60fps; 720p video at 30fps; slow motion: 720p 120fps | — |
| Sound | ||
| 3 5mm Jack | No - USB Type-C digital earphones only | — |
| Loudspeaker | Stereo dual speakers, Dolby Atmos, spatial audio, Hi-Res & Hi-Res Audio Wireless certified, 3-microphone array | — |
| Connectivity | ||
| Bluetooth | Bluetooth 6.0, Dual-Bluetooth; SBC / AAC / LDAC / LHDC 5.0 / LC3 | 6.0 |
| Nfc | Yes - multifunctional NFC (transit cards, Mi Pay, access cards, car keys) | Yes |
| Positioning | Beidou: B1I + B1C + B2a; GPS: L1 + L5; Galileo: E1 + E5a; GLONASS: G1; QZSS: L1 + L5; NavIC; AGNSS, data network positioning, Wi-Fi network positioning, sensor-assisted positioning | — |
| Usb | USB Type-C, USB 3.2 Gen 2 (up to 10Gbps) | USB Type-C 3.2 |
| Uwb | Yes - UWB ultra-wideband connection technology | — |
| Wlan | Wi-Fi 7, Wi-Fi 6, Wi-Fi 5, Wi-Fi 4 and 802.11a/b/g; 2.4GHz + 5GHz, MLO, 2x2 MIMO, Wi-Fi Direct, Miracast, dual-band concurrency | Wi-Fi 7 |
| Features | ||
| Sensors | Proximity sensor, in-display ambient light (colour temperature) sensor, rear ambient light (colour temperature) sensor, accelerometer, gyroscope, electronic compass, X-axis linear motor, infrared remote control, flicker sensor, laser focus sensor, barometer, side-mounted fingerprint sensor | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
| Battery | ||
| Charging | 67W Xiaomi Pengpai (Surge) wired fast charging, 50W Xiaomi Pengpai wireless fast charging; supports PD3.0 / PD2.0 fast charging protocols and 50W PPS | 60W wired, 25W wireless |
| Type | 6000 mAh | 5700 mAh |
| Misc | ||
| Colors | Warm Gold White, Black, Xiye Red, Ceramic Special Edition | — |
| Price | From CNY 10,999 (China) | — |
| Models | — | SM-S958, SM-S958U, SM-S958B |
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