Apple iPhone 15 vs Xiaomi 15 Ultra
The Verdict
Apple's iPhone 15 delivers a refined experience with iOS 17's seamless ecosystem integration, though it employs last year's A16 Bionic chip paired with 6GB RAM and a modest 3349 mAh battery. The 6.1-inch Super Retina XDR display operates at 60Hz with 2000 nits peak brightness, suitable for everyday use but lacking the refresh rate flexibility of competitors. Camera performance remains strong with a 48MP main sensor and 4K Dolby Vision recording, justifying its $799 price point for those invested in Apple's ecosystem. Xiaomi's 15 Ultra ($999) represents a significantly different proposition: its Snapdragon 8 Elite processor with 16GB RAM provides raw performance superiority, while the 5810 mAh battery with 90W charging obliterates the iPhone's endurance capabilities. The 6.73-inch LTPO AMOLED display offers 3200 x 1440 resolution and 120Hz refresh rates with 3200 nits brightness. Photography stands as Xiaomi's strongest advantage: a 50MP primary sensor with 1-inch size, 200MP 5x telephoto with optical zoom, and 8K video recording substantially outclass the iPhone. However, Xiaomi's HyperOS 2 carries a heavier software footprint and lacks the polish of iOS. The iPhone 15 excels for ecosystem loyalty and compact portability; the Xiaomi 15 Ultra suits power users demanding superior cameras, performance, and battery life despite its 229g weight.
Who Should Buy
Buy the Apple iPhone 15 if…
- →Dynamic Island brought to base model
- →48 MP main camera upgrade
- →Switched to USB-C port
Buy the Xiaomi 15 Ultra if…
- →200MP periscope telephoto with 5x optical zoom rivals Galaxy S25 Ultra
- →1-inch main sensor with Leica optics produces stunning photos
- →Titanium frame gives a premium, durable build
Category Scores
Pros & Cons
Apple iPhone 15
Pros
- Dynamic Island brought to base model
- 48 MP main camera upgrade
- Switched to USB-C port
- Strong A16 Bionic performance
- Comfortable lightweight design
Cons
- Stuck at 60Hz refresh rate
- USB-C limited to USB 2.0 speeds
- No telephoto camera
- No always-on display
Xiaomi 15 Ultra
Pros
- 200MP periscope telephoto with 5x optical zoom rivals Galaxy S25 Ultra
- 1-inch main sensor with Leica optics produces stunning photos
- Titanium frame gives a premium, durable build
- 4K@120fps video recording is industry-leading
- 90W fast charging and 50W wireless on a huge 5810 mAh battery
Cons
- Heavy at 229 g and thick at 9.17 mm
- Very expensive at $999 with limited global availability
- HyperOS software experience lags behind iOS and One UI
- Camera bump is extremely large
Full Specifications
| Spec | Apple iPhone 15 | Xiaomi 15 Ultra |
|---|---|---|
| Software | iOS 17 | Android 15 (HyperOS 2) |
| Body | ||
| Weight | 171 g | 229 g |
| Material | Aluminum frame | Titanium frame, Gorilla Glass Victus 2 |
| IP rating | IP68 | IP68 |
| Dimensions | 147.6 x 71.6 x 7.8 mm | 161.1 x 75.2 x 9.17 mm |
| Camera | ||
| Main camera | 48 MP | 50 MP, f/1.63, OIS (1-inch sensor) |
| Front camera | 12 MP | 32 MP, f/2.0 |
| Video | 4K@60fps Dolby Vision | 8K@30fps, 4K@120fps |
| Ultrawide | 12 MP | 50 MP, f/2.0, 128-degree |
| Telephoto | — | 200 MP, f/2.6, 5x periscope optical zoom, OIS |
| Memory | ||
| RAM | 6 GB | 16 GB |
| Storage options | 128 GB, 256 GB, 512 GB | 256 GB, 512 GB, 1 TB |
| Battery | ||
| Capacity | 3349 mAh | 5810 mAh |
| Charging | 20W wired | 90W wired |
| Wireless charging | 15W MagSafe | 50W wireless |
| Display | ||
| Size | 6.1 inches | 6.73 inches |
| Type | Super Retina XDR OLED | LTPO AMOLED |
| Resolution | 2556 x 1179 | 3200 x 1440 |
| Refresh rate | 60Hz | 1-120Hz |
| Brightness (nits) | 2000 | 3200 |
| Processor | ||
| CPU | Hexa-core | Octa-core (2x4.32 GHz + 6x3.53 GHz) |
| GPU | Apple GPU (5-core) | Adreno 830 |
| Chipset | Apple A16 Bionic | Qualcomm Snapdragon 8 Elite |
| Connectivity | ||
| 5G | ||
| NFC | ||
| USB | USB-C 2.0 | USB-C 3.2 |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 7 |
| Bluetooth | 5.3 | 5.4 |
Want to compare a third product?
Add another product for a 3-way comparison.
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in phones, see all Apple products or all Xiaomi products. View full details for the Apple iPhone 15 or the Xiaomi 15 Ultra.

