Xiaomi 15 Ultra vs iPhone 17 Pro Max
Two brands, one target. The Xiaomi 15 Ultra from Xiaomi and the iPhone 17 Pro Max from Apple compete head to head for flagship smartphone shoppers. Of the 5 areas we compared, the Xiaomi 15 Ultra wins 4. If one area explains the result, it’s camera.
At a glance
- Display Xiaomi 15 Ultra wins
- Performance Tie
- Memory & Storage Xiaomi 15 Ultra wins
- Camera Xiaomi 15 Ultra wins
- Battery & Charging Xiaomi 15 Ultra wins
- Display7.2
- Memory & Storage8.1
- Camera5.7
- Display6.2
- Memory & Storage6.4
- Camera3.2
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
-
The Xiaomi 15 Ultra has 512 GB of base storage instead of 256 GB
On base storage, the Xiaomi 15 Ultra posts 512 GB against 256 GB for the iPhone 17 Pro Max, a gap big enough to feel in everyday use. The Xiaomi 15 Ultra starts with more room, which means fewer “storage full” warnings and less time deleting old videos.
-
The Xiaomi 15 Ultra has a dedicated 200 MP telephoto camera
This is one of the widest gaps in the whole comparison: 200 MP for the Xiaomi 15 Ultra versus 48 MP for the iPhone 17 Pro Max. A dedicated telephoto camera captures distant subjects and portraits without heavy cropping, which keeps detail intact.
-
The Xiaomi 15 Ultra has an extra rear camera
The iPhone 17 Pro Max lists 3; the Xiaomi 15 Ultra comes in at 4. That’s not a rounding error. The count alone doesn’t guarantee quality, but the Xiaomi 15 Ultra gives you more lenses to choose from.
-
The iPhone 17 Pro Max has a bigger top storage option
At 2 TB versus 1 TB, this is a decisive lead for the iPhone 17 Pro Max, the kind of difference you notice without looking for it. Most buyers are fine with a base or middle tier, so this is a niche advantage, but a real one if you need it.
-
The Xiaomi 15 Ultra has faster 80 W wireless charging
If wireless charging is one of your priorities, this settles it: the Xiaomi 15 Ultra leads clearly with 80 W to the iPhone 17 Pro Max’s 25 W. Wireless charging is usually slower than a cable, so this edge matters mainly to people who value the convenience.
Design & Size
- Xiaomi 15 Ultra 6.35 in × 2.96 in × 0.37 in
- iPhone 17 Pro Max 6.43 in × 3.07 in × 0.34 in
Size-wise, the iPhone 17 Pro Max takes up more space, and the Xiaomi 15 Ultra is easier to fit where room is tight. The Xiaomi 15 Ultra and the iPhone 17 Pro Max are within a few percent of each other on weight. In profile, the iPhone 17 Pro Max is the slimmer of the two by 0.02 in.
Design & Build
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Height | 6.35 in | 6.43 in |
| Width | 2.96 in | 3.07 in |
| Thickness | 0.37 in Thickest in class | 0.34 in (winner) |
| Weight | 7.97 oz | 8.22 oz |
| Water & dust rating | IP68 | IP68 |
| Frame | Aluminum | Aluminum |
Display
Xiaomi 15 Ultra leads
A modest lead on display belongs to the Xiaomi 15 Ultra. The Xiaomi 15 Ultra takes this one with 13% sharper pixel density. Pixel density matters most if you hold your phone close or read a lot of small type; for casual use, the gap is subtle. If display is your priority, the Xiaomi 15 Ultra is the phone to pick.
Pixel density
Xiaomi 15 Ultra: 522 ppi iPhone 17 Pro Max: 460 ppi The Xiaomi 15 Ultra packs its pixels more tightly, which shows most in small text, fine patterns and zoomed-in photos.
Performance
Too close to call
You can skip ahead if performance was your deciding factor: the two are evenly matched here. In short, performance is a draw; the decision lies elsewhere.
CPU cores
Xiaomi 15 Ultra: 8 iPhone 17 Pro Max: 6 Core count on its own says little about speed; how the chip is designed and how fast each core runs matter more.
Memory & Storage
Xiaomi 15 Ultra leads
This section belongs to the Xiaomi 15 Ultra. In memory & storage, it leads the iPhone 17 Pro Max by a margin that’s hard to ignore. The Xiaomi 15 Ultra comes with 512 GB of base storage instead of 256 GB. If you shoot a lot of video or keep music and maps offline, base storage is one of the specs you’ll feel most over the years. On the iPhone 17 Pro Max, you get a bigger top storage option. For anyone who cares most about memory & storage, the Xiaomi 15 Ultra is the safer choice.
Base storage
Xiaomi 15 Ultra: 512 GB iPhone 17 Pro Max: 256 GB Base storage is what you get without paying extra. Photos, videos and apps add up quickly, so more space at the entry price is real value.
Max storage
Xiaomi 15 Ultra: 1 TB iPhone 17 Pro Max: 2 TB The top storage option only matters if you plan to buy a high-capacity version, but it caps how much you can ever keep on the phone.
Camera
Xiaomi 15 Ultra leads
The camera numbers point firmly in one direction: toward the Xiaomi 15 Ultra. The Xiaomi 15 Ultra scores with a dedicated 200 MP telephoto camera. Telephoto lenses earn their keep at concerts, school events and portraits: anywhere you can’t simply walk closer. That makes the Xiaomi 15 Ultra the natural choice for buyers focused on camera.
Telephoto camera
Xiaomi 15 Ultra: 200 MP iPhone 17 Pro Max: 48 MP A higher-resolution telephoto keeps more detail when you zoom, and gives the Xiaomi 15 Ultra a stronger tool for portraits and distant subjects.
Rear cameras
Xiaomi 15 Ultra: 4 iPhone 17 Pro Max: 3 More cameras help most when each covers a different view, so check the table to see what the Xiaomi 15 Ultra’s extra lens adds.
Battery & Charging
Xiaomi 15 Ultra leads
On balance, the Xiaomi 15 Ultra leads the battery & charging section, just not by much. The Xiaomi 15 Ultra adds faster 80 W wireless charging. Faster wireless charging makes a pad or stand more practical as your main way to top up. Bottom line for battery & charging: the Xiaomi 15 Ultra has the edge.
Wireless charging
Xiaomi 15 Ultra: 80 W iPhone 17 Pro Max: 25 W If you rely on a wireless pad at your desk or bedside, the Xiaomi 15 Ultra refills quicker there.
Software & Updates
For software & updates, the differences are in the specifics (component names and types), so the table is the place to look.
Full Specifications
Display
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Screen size | 6.7 in | 6.9 in |
| Panel type | LTPO AMOLED | OLED, ProMotion 120 Hz (Super Retina XDR) |
| Resolution | 3200 x 1440 | 2868 x 1320 |
| Pixel density | 522 ppi (winner) Sharpest screen in class | 460 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,200 nits | 3,000 nits |
| Always-on display | N/A (not specified) | Yes |
Performance
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Chipset | Snapdragon 8 Elite | A19 Pro |
| CPU cores | 8 | 6 |
| Process node | 3 nm | 3 nm |
| RAM | 16 GB | N/A (not specified) |
Memory & Storage
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Base storage | 512 GB (winner) | 256 GB |
| Max storage | 1 TB | 2 TB (winner) |
| microSD slot | No | No |
Camera
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Main camera | 50 MP | 48 MP |
| Ultra-wide camera | 50 MP | 48 MP |
| Telephoto camera | 200 MP (winner) | 48 MP |
| Optical zoom | 4.3× | 4× |
| Rear cameras | 4 (winner) | 3 |
| Front camera | 32 MP (winner) | 18 MP |
| Max video | 8K30 | 4K120 Dolby Vision |
Battery & Charging
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Battery capacity | 5,410 mAh | N/A (not specified) |
| Rated video playbackManufacturer rating | N/A (not specified) | 39 h |
| Wired charging | 90 W | N/A (not specified) |
| Wireless charging | 80 W (winner) | 25 W |
| Port | USB-C (USB 3.2) | USB-C (USB 3, 10 Gb/s) |
Software & Updates
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| OS at launch | HyperOS 2 (Android 15) | iOS 26 |
| Promised OS updatesManufacturer commitment | 4 years | N/A (not specified) |
Design & Build
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Height | 6.35 in | 6.43 in |
| Width | 2.96 in | 3.07 in |
| Thickness | 0.37 in Thickest in class | 0.34 in (winner) |
| Weight | 7.97 oz | 8.22 oz |
| Water & dust rating | IP68 | IP68 |
| Frame | Aluminum | Aluminum |
Price
| Spec | Xiaomi 15 Ultra | iPhone 17 Pro Max |
|---|---|---|
| Launch price | N/A (not specified) | $1,199 |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Which One Should You Buy?
Choose the Xiaomi 15 Ultra if…
- you want more storage without paying for an upgrade (512 GB vs 256 GB)
- you take lots of portraits and zoomed shots (200 MP vs 48 MP telephoto)
- you like switching between focal lengths (4 vs 3 cameras)
- you want faster wireless charging (80 W vs 25 W)
Choose the iPhone 17 Pro Max if…
- you plan to buy a high-capacity version (2 TB vs 1 TB maximum)
- you want the slimmer phone (0.34 in vs 0.37 in)
- you find that bigger suits the way you use a phone
Also Compared
Frequently Asked Questions
Which is better for most people, the Xiaomi 15 Ultra or the iPhone 17 Pro Max?
We’d point most buyers to the Xiaomi 15 Ultra. The main exception is if what you want most is a bigger top storage option.
Is the Xiaomi 15 Ultra bigger than the iPhone 17 Pro Max?
The iPhone 17 Pro Max takes that one. With dimensions of 6.43 × 3.07 × 0.34 in, it is larger than the Xiaomi 15 Ultra (6.35 × 2.96 × 0.37 in).
Which has the better camera, the Xiaomi 15 Ultra or the iPhone 17 Pro Max?
The Xiaomi 15 Ultra has the edge for photography, offering a dedicated 200 MP telephoto camera and an extra rear camera.
Which has the better screen, the Xiaomi 15 Ultra or the iPhone 17 Pro Max?
The Xiaomi 15 Ultra has the stronger display on paper, with 13% sharper pixel density.
Is the Xiaomi 15 Ultra lighter than the iPhone 17 Pro Max?
The difference between the Xiaomi 15 Ultra and the iPhone 17 Pro Max is too small to notice, so call it a tie.
Which has more storage, the Xiaomi 15 Ultra or the iPhone 17 Pro Max?
The Xiaomi 15 Ultra offers more, with 512 GB against 256 GB.
Executive Summary
I read both spec sheets (the Xiaomi 15 Ultra’s and the iPhone 17 Pro Max’s) so you don’t have to. Here’s what matters most to me: the Xiaomi 15 Ultra offers 512 GB of base storage instead of 256 GB. Plus, the Xiaomi 15 Ultra gets a dedicated 200 MP telephoto camera, which I wouldn’t overlook. I don’t want to sell the iPhone 17 Pro Max short, though: it has a bigger top storage option.
The Xiaomi 15 Ultra makes sense for anyone who values display; the iPhone 17 Pro Max for anyone who values storage.
My pick: if it were my money, the Xiaomi 15 Ultra, unless your top priority is a bigger top storage option.
Personal opinion based on the data above. Your priorities may differ.