Google Pixel 4 vs Xiaomi 15 Ultra
The Verdict
Comparing these phones reveals a significant generational gap. The Pixel 4 features a compact 5.7-inch 90Hz P-OLED display with 600 nits brightness, solid Snapdragon 855 performance, and an excellent 12.2MP camera with 2x optical zoom. However, its 2800mAh battery with 18W charging severely limits longevity. The Xiaomi 15 Ultra, priced at $200 higher, demolishes the Pixel 4 in nearly every metric: a 6.73-inch 1-120Hz LTPO AMOLED screen reaching 3200 nits, cutting-edge Snapdragon 8 Elite processor, and a quad-camera setup anchored by a 1-inch 50MP sensor with 5x periscope zoom and 8K video recording. Battery capacity jumps to 5810mAh with 90W wired and 50W wireless charging. RAM reaches 16GB versus 6GB, and storage scales to 1TB. Connectivity includes 5G, Wi-Fi 7, and Bluetooth 5.4 versus the Pixel 4's Wi-Fi 5 and no 5G. The Xiaomi weighs 229g versus 162g, but build quality improves with titanium and Gorilla Glass Victus 2. For modern users prioritizing photography, performance, and battery endurance, the Xiaomi 15 Ultra delivers substantially better value despite the higher price. The Pixel 4 suits only those needing a lightweight device or preferring stock Android.
Who Should Buy
Buy the Google Pixel 4 if…
- →Best-in-class astrophotography mode
- →90Hz smooth OLED display
- →Excellent dual camera with telephoto
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
Google Pixel 4
Pros
- Best-in-class astrophotography mode
- 90Hz smooth OLED display
- Excellent dual camera with telephoto
- Face unlock with 3D face scanning
- Compact and lightweight
Cons
- Terrible 2800 mAh battery life
- No ultrawide camera
- Large forehead bezel
- No fingerprint scanner
- Only 64 GB base storage
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 | Google Pixel 4 | Xiaomi 15 Ultra |
|---|---|---|
| Software | Android 10 | Android 15 (HyperOS 2) |
| Body | ||
| Weight | 162 g | 229 g |
| Material | Aluminum frame, Gorilla Glass 5 | Titanium frame, Gorilla Glass Victus 2 |
| IP rating | IP68 | IP68 |
| Dimensions | 147.1 x 68.8 x 8.2 mm | 161.1 x 75.2 x 9.17 mm |
| Camera | ||
| Main camera | 12.2 MP, f/1.7, OIS | 50 MP, f/1.63, OIS (1-inch sensor) |
| Front camera | 8 MP, f/2.0 | 32 MP, f/2.0 |
| Video | 4K@30fps | 8K@30fps, 4K@120fps |
| Telephoto | 16 MP, f/2.4, 2x optical zoom | 200 MP, f/2.6, 5x periscope optical zoom, OIS |
| Ultrawide | — | 50 MP, f/2.0, 128-degree |
| Memory | ||
| RAM | 6 GB | 16 GB |
| Storage options | 64 GB, 128 GB | 256 GB, 512 GB, 1 TB |
| Battery | ||
| Capacity | 2800 mAh | 5810 mAh |
| Charging | 18W wired | 90W wired |
| Wireless charging | 11W wireless | 50W wireless |
| Display | ||
| Size | 5.7 inches | 6.73 inches |
| Type | P-OLED | LTPO AMOLED |
| Resolution | 2280 x 1080 | 3200 x 1440 |
| Refresh rate | 90Hz | 1-120Hz |
| Brightness (nits) | 600 | 3200 |
| Processor | ||
| CPU | Octa-core (1x2.84 GHz + 3x2.42 GHz + 4x1.78 GHz) | Octa-core (2x4.32 GHz + 6x3.53 GHz) |
| GPU | Adreno 640 | Adreno 830 |
| Chipset | Qualcomm Snapdragon 855 | Qualcomm Snapdragon 8 Elite |
| Connectivity | ||
| 5G | ||
| NFC | ||
| USB | USB-C 3.1 | USB-C 3.2 |
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 7 |
| Bluetooth | 5.0 | 5.4 |
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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.
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