15 Ultra vs 17 Ultra
It depends
Too close to call outright
These two are within 4 points overall — it genuinely depends on price on the day. The 17 Ultra edges both longevity and performance, so prefer it when prices are close.
Value Score: 15 Ultra 64 · 17 Ultra 68 — methodology
Who should pick which
Beyond the scores — our take on each phone and the buyer it actually suits.
A photographer's dream phone with a 1-inch Leica quad camera, hampered in the US only by its import-only status.
Pick it if
- ✓ Mobile photography enthusiasts
- ✓ Power users wanting the best hardware
- ✓ Buyers willing to import for the best camera
Skip it if
- ✗ You need a US warranty and carrier support
- ✗ You prefer a compact, lightweight phone
Xiaomi's camera flagship pairs a 1-inch main sensor with a 200MP APO periscope and finally reaches the global market at MWC 2026, backed by security patches through February 2032.
Pick it if
- ✓ Mobile photographers who want the best zoom range on the market
- ✓ Buyers who want Xiaomi's flagship camera with the longest remaining support window
Skip it if
- ✗ You want the largest possible battery (the China variant is bigger)
- ✗ You need an official US retailer and warranty
The lifespan decider
When specs are close, support length decides it — this is what each phone costs per month of safe use.
Category by category
The 15 Ultra's screen is the better one — 6.73-inch 2k (1440×3200) ltpo amoled, 1–120hz, up to 3200 nits peak.
Performance is a wash — same chip tier.
The 15 Ultra has the stronger camera system (4 real rear lenses vs 3).
6,000mAh vs 5,410mAh — the 17 Ultra lasts longer between charges.
The 17 Ultra is supported until Feb 2032 — 24 months longer than the 15 Ultra.
Overall value goes to the 17 Ultra at $24.60 per month of safe use.
Frequently asked
Can I use the Xiaomi 15 Ultra on US carriers?
It works on most GSM networks like T-Mobile and AT&T for LTE and 5G, but band support is incomplete and there is no carrier certification or warranty since it is not officially sold in the US.
How long will the Xiaomi 15 Ultra get updates?
Xiaomi commits to 4 years of major Android/HyperOS upgrades and 5 years of security patches from the March 2025 launch, putting end of support around March 2030.
Did the Xiaomi 17 Ultra actually launch, or is it still a rumor?
It's real and on sale: Xiaomi unveiled it globally on February 28, 2026 at MWC in Barcelona, and it has been shipping and reviewed since, with retail listings live as of mid-2026.
How long will the Xiaomi 17 Ultra be supported?
Xiaomi's 4-year OS / 6-year security update commitment for the 17 series puts end-of-support around February 2032, so a mid-2026 purchase still banks roughly 5.5 years of patches.
Full spec table
| Spec | 15 Ultra | 17 Ultra |
|---|---|---|
| Price (street) | $1350 | $1650 |
| Display | 6.73-inch 2K (1440×3200) LTPO AMOLED, 1–120Hz, up to 3200 nits peak | 6.9-inch LTPO AMOLED, 2K, 120Hz, up to 3500 nits peak |
| Chipset | Qualcomm Snapdragon 8 Elite (3nm) | Qualcomm Snapdragon 8 Elite Gen 5 |
| RAM | 16GB | 12GB/16GB |
| Storage | 512GB/1TB | 256GB/512GB/1TB |
| Battery | 5,410 mAh | 6,000 mAh |
| Charging | 90W wired, 80W wireless | 90W wired, 50W wireless |
| Rear cameras | 50MP main, 50MP ultra-wide, 50MP telephoto (70mm floating), 200MP periscope telephoto | 50MP main, 200MP periscope 3.2-4.3x, 50MP ultra-wide |
| Dimensions | 161.3 × 75.3 × 9.35 mm | 162.9 x 77.6 x 8.29 mm |
| Weight | 226 g | 218 g |
| Water resistance | IP68 | IP68 |
| Supported until | Mar 2030 | Feb 2032 |
More comparisons
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.