Xiaomi 15 Ultra vs Xiaomi Redmi Note 12
The Verdict
Xiaomi 15 Ultra and Redmi Note 12 serve vastly different markets, making direct comparison challenging. The 15 Ultra dominates with its flagship Snapdragon 8 Elite processor, delivering substantially faster performance than the Note 12's aging Snapdragon 4 Gen 1. Its 6.73-inch LTPO AMOLED display reaches 3200 nits brightness versus 1200 nits, with 3200x1440 resolution compared to 2400x1080. Camera capabilities are incomparable: the 15 Ultra offers a 1-inch 50MP main sensor, 200MP periscope zoom, and 8K video recording versus the Note 12's basic 50MP setup with only 1080p video. Battery capacity favors the 15 Ultra at 5810mAh with 90W fast charging and 50W wireless, while the Note 12 maxes out at 33W wired only. Titanium construction and IP68 rating provide better durability than the Note 12's plastic frame and IP53 rating. However, the Redmi Note 12 excels in value proposition at $179 versus $999. For budget-conscious users seeking basic reliability, the Note 12 remains adequate. Premium users wanting flagship features with genuine innovation should choose the 15 Ultra without hesitation.
Who Should Buy
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
Buy the Xiaomi Redmi Note 12 if…
- →AMOLED 120Hz display at $179 is exceptional value
- →5G connectivity at ultra-budget pricing
- →33W fast charging for the 5000 mAh battery
Category Scores
Pros & Cons
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
Xiaomi Redmi Note 12
Pros
- AMOLED 120Hz display at $179 is exceptional value
- 5G connectivity at ultra-budget pricing
- 33W fast charging for the 5000 mAh battery
- IP53 splash resistance for basic protection
- Lightweight and slim design at 188 g
Cons
- Snapdragon 4 Gen 1 offers limited performance
- Only a depth sensor as secondary camera — no ultrawide
- 4 GB base RAM is very tight for multitasking
- Video recording capped at 1080p@30fps
- MIUI has ads and bloatware
Full Specifications
| Spec | Xiaomi 15 Ultra | Xiaomi Redmi Note 12 |
|---|---|---|
| Software | Android 15 (HyperOS 2) | Android 12 (MIUI 14) |
| Body | ||
| Weight | 229 g | 188 g |
| Material | Titanium frame, Gorilla Glass Victus 2 | Plastic frame, glass front, plastic back |
| IP rating | IP68 | IP53 |
| Dimensions | 161.1 x 75.2 x 9.17 mm | 165.9 x 76 x 7.98 mm |
| Camera | ||
| Main camera | 50 MP, f/1.63, OIS (1-inch sensor) | 50 MP, f/1.8, PDAF |
| Front camera | 32 MP, f/2.0 | 13 MP, f/2.4 |
| Video | 8K@30fps, 4K@120fps | 1080p@30fps |
| Telephoto | 200 MP, f/2.6, 5x periscope optical zoom, OIS | — |
| Ultrawide | 50 MP, f/2.0, 128-degree | — |
| Depth | — | 2 MP, f/2.4 |
| Memory | ||
| RAM | 16 GB | 4 GB / 6 GB / 8 GB |
| Storage options | 256 GB, 512 GB, 1 TB | 64 GB, 128 GB |
| Battery | ||
| Capacity | 5810 mAh | 5000 mAh |
| Charging | 90W wired | 33W wired |
| Wireless charging | 50W wireless | No |
| Display | ||
| Size | 6.73 inches | 6.67 inches |
| Type | LTPO AMOLED | AMOLED |
| Resolution | 3200 x 1440 | 2400 x 1080 |
| Refresh rate | 1-120Hz | 120Hz |
| Brightness (nits) | 3200 | 1200 |
| Processor | ||
| CPU | Octa-core (2x4.32 GHz + 6x3.53 GHz) | Octa-core (2x2.0 GHz + 6x1.8 GHz) |
| GPU | Adreno 830 | Adreno 619 |
| Chipset | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 4 Gen 1 |
| Connectivity | ||
| 5G | ||
| NFC | ||
| USB | USB-C 3.2 | USB-C 2.0 |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 5 |
| Bluetooth | 5.4 | 5.1 |
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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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