15 vs 17 Pro Max
Winner
Xiaomi 17 Pro Max
The 17 Pro Max wins this one, taking software longevity and battery decisively. Against the 15 it's also the sounder buy at $12.43 per month of safe use.
Value Score: 15 67 · 17 Pro Max 75 — methodology
Who should pick which
Beyond the scores — our take on each phone and the buyer it actually suits.
A compact flagship that pairs the Snapdragon 8 Elite with a genuinely pocketable body and a long support window, but you'll likely import it.
Pick it if
- ✓ Buyers who want a small high-end phone
- ✓ Photography enthusiasts who like Leica processing
- ✓ People who keep phones 4+ years and value long updates
Skip it if
- ✗ You need official US carrier support and warranty
- ✗ You want the biggest possible screen and battery
Xiaomi's biggest-battery flagship -- a 7,500mAh silicon-carbon cell and a fully functional rear display -- but it's China-only, and its update clock, running to September 2031, is already ticking down.
Pick it if
- ✓ Battery-life maximalists who don't mind importing
- ✓ Buyers who want the rear-screen feature with the biggest cell
Skip it if
- ✗ You want a phone with an official warranty in your country
- ✗ You prefer a compact, lighter flagship
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
Both displays are effectively the same class.
Performance is a wash — same chip tier.
Camera systems are comparable on paper — pick by sample photos.
7,500mAh vs 5,240mAh — the 17 Pro Max lasts longer between charges.
The 17 Pro Max is supported until Sep 2031 — 19 months longer than the 15.
Overall value goes to the 17 Pro Max at $12.43 per month of safe use.
Frequently asked
Is the Xiaomi 15 sold in the United States?
No. Xiaomi does not sell the Xiaomi 15 through official US channels, so American buyers rely on importers or used units, and some US carrier bands may not be fully supported.
How long will the Xiaomi 15 receive updates?
Xiaomi commits to four major Android/HyperOS upgrades and five years of security patches, putting end of support around March 2030 for a phone released in March 2025.
Was the Xiaomi 17 Pro Max ever sold globally?
No. Xiaomi limited the international MWC 2026 launch to the standard Xiaomi 17 and the 17 Ultra; the Pro and Pro Max stayed exclusive to the Chinese market, so buyers elsewhere rely on gray-market imports.
How long does the Xiaomi 17 Pro Max get updates?
Under Xiaomi's 4-year OS / 6-year security policy for the 17 series, support runs through roughly September 2031 from its September 2025 China launch -- about 5 years remaining if bought in mid-2026.
Full spec table
| Spec | 15 | 17 Pro Max |
|---|---|---|
| Price (street) | $750 | $770 |
| Display | 6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+ | 6.9-inch LTPO AMOLED, 2K (1200x2608), 120Hz, 3500 nits peak; plus 2.9-inch rear OLED display (976x596, 120Hz) |
| Chipset | Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite Gen 5 |
| RAM | 12GB | 12GB/16GB |
| Storage | 256GB/512GB | 256GB/512GB/1TB |
| Battery | 5,240 mAh | 7,500 mAh |
| Charging | 90W wired, 50W wireless | 100W wired, 50W wireless, 22.5W reverse wireless |
| Rear cameras | 50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating) | 50MP main, 50MP periscope 5x, 50MP ultra-wide |
| Dimensions | 152.3 × 71.2 × 8.08 mm | 162.9 x 77.6 x 8.0 mm |
| Weight | 191 g | 219 g |
| Water resistance | IP68 | IP68 |
| Supported until | Mar 2030 | Sep 2031 |
More comparisons
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.