Realme GT 6 vs Xiaomi 15
The Verdict
Realme GT 6 delivers exceptional value at $449, featuring a larger 6.78-inch display with stunning 6000-nit peak brightness, blazing-fast 120W charging, and the capable Snapdragon 8s Gen 3. Its camera system impresses with a 50MP main sensor and 2x telephoto, plus strong 4K video. Xiaomi 15 commands a $150 premium, justifying it with the flagship Snapdragon 8 Elite processor, lighter 191g design, superior IP68 rating, 8K video capability, and 50W wireless charging—though its 3200-nit display and smaller battery are compromises. Performance-wise, the 8 Elite edges ahead, but Realme's superior display brightness and charging speed offer tangible daily benefits. Choose Realme GT 6 for best overall value and practical features; select Xiaomi 15 if you prioritize top-tier processing power and wireless convenience.
Who Should Buy
Buy the Realme GT 6 if…
- →6000-nit peak brightness is the highest on any phone screen period
- →120W charging fills the 5500 mAh battery in about 20 minutes
- →Sony LYT-808 main sensor captures excellent daylight photos
Buy the Xiaomi 15 if…
- →Snapdragon 8 Elite delivers top-tier performance
- →Triple 50MP camera system with Leica optics at a competitive price
- →Compact 6.36-inch size with flagship specs — rare in 2025
Category Scores
Pros & Cons
Realme GT 6
Pros
- 6000-nit peak brightness is the highest on any phone screen period
- 120W charging fills the 5500 mAh battery in about 20 minutes
- Sony LYT-808 main sensor captures excellent daylight photos
- Snapdragon 8s Gen 3 offers near-flagship performance
- Aggressive pricing undercuts Samsung and Google alternatives
Cons
- 8MP ultrawide is a letdown at this price
- Plastic frame feels cheaper than metal alternatives
- Realme UI comes with bloatware and occasional ads
- IP65 splash resistance — not waterproof
Xiaomi 15
Pros
- Snapdragon 8 Elite delivers top-tier performance
- Triple 50MP camera system with Leica optics at a competitive price
- Compact 6.36-inch size with flagship specs — rare in 2025
- Blazing 90W wired charging fills the 5400 mAh battery in under 30 minutes
- 3200-nit peak brightness is excellent for outdoor visibility
Cons
- HyperOS still carries some bloatware and ad placements
- 2.6x telephoto lacks the reach of 5x periscope competitors
- Limited global availability compared to Samsung and Apple
- No headphone jack
Full Specifications
| Spec | Realme GT 6 | Xiaomi 15 |
|---|---|---|
| Software | Android 14 (Realme UI 5) | Android 15 (HyperOS 2) |
| Body | ||
| Weight | 199 g | 191 g |
| Material | Plastic frame, Gorilla Glass Victus 2 | Aluminum frame, Gorilla Glass Victus 2 |
| IP rating | IP65 | IP68 |
| Dimensions | 162.0 x 75.1 x 8.6 mm | 152.3 x 71.2 x 8.08 mm |
| Camera | ||
| Main camera | 50 MP, f/1.69, OIS (Sony LYT-808) | 50 MP, f/1.6, OIS (Light Fusion 900 sensor) |
| Front camera | 32 MP, f/2.4 | 32 MP, f/2.0 |
| Video | 4K@60fps | 8K@24fps, 4K@60fps |
| Telephoto | 50 MP, f/2.0, 2x telephoto | 50 MP, f/2.0, 2.6x optical zoom |
| Ultrawide | 8 MP, f/2.2 | 50 MP, f/2.2, 115-degree |
| Memory | ||
| RAM | 8 GB | 12 GB |
| Storage options | 256 GB, 512 GB | 256 GB, 512 GB |
| Battery | ||
| Capacity | 5500 mAh | 5400 mAh |
| Charging | 120W wired | 90W wired |
| Wireless charging | — | 50W wireless |
| Display | ||
| Size | 6.78 inches | 6.36 inches |
| Type | LTPO AMOLED | LTPO AMOLED |
| Resolution | 2780 x 1264 | 2670 x 1200 |
| Refresh rate | 1-120Hz | 1-120Hz |
| Brightness (nits) | 6000 | 3200 |
| Processor | ||
| CPU | Octa-core | Octa-core (2x4.32 GHz + 6x3.53 GHz) |
| GPU | Adreno 735 | Adreno 830 |
| Chipset | Qualcomm Snapdragon 8s Gen 3 | 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 | 5.4 | 5.4 |
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.
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