iQOO 15 Ultra vs X100 Ultra
Winner
Vivo iQOO 15 Ultra
Lifespan decides this one: the iQOO 15 Ultra is supported until Feb 2033 at $10.08 per month of safe use, while the X100 Ultra runs out in May 2029 ($21.16/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.
Value Score: iQOO 15 Ultra 79 · X100 Ultra 65 — methodology
Who should pick which
Beyond the scores — our take on each phone and the buyer it actually suits.
iQOO's no-compromise gaming flagship pairs a Snapdragon 8 Elite Gen 5, a 7,400mAh battery and a 59-blade cooling fan with an unusually long 5-year OS / 7-year security promise that keeps it safe to use into 2033.
Pick it if
- ✓ Mobile gamers who keep phones for years
- ✓ Performance buyers who want the longest support window
Skip it if
- ✗ You need an official US warranty and full carrier bands
- ✗ You want a light, compact phone
A camera monster built around a 200MP periscope and 10x-class reach, and one of the most future-proofed phones Vivo has shipped.
Pick it if
- ✓ Mobile photography enthusiasts
- ✓ Long-term keepers
Skip it if
- ✗ Those wanting a light phone
- ✗ Buyers needing local support
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.
The iQOO 15 Ultra's Qualcomm Snapdragon 8 Elite Gen 5 is simply the faster chip.
The X100 Ultra has the stronger camera system — same lens count, higher-grade sensors.
7,400mAh vs 5,500mAh — the iQOO 15 Ultra lasts longer between charges.
The iQOO 15 Ultra is supported until Feb 2033 — 44 months longer than the X100 Ultra.
Overall value goes to the iQOO 15 Ultra at $10.08 per month of safe use.
Frequently asked
When does the iQOO 15 Ultra stop getting updates?
iQOO backs the iQOO 15 series with 5 major Android OS upgrades and 7 years of security patches, so a unit bought at the February 2026 launch is covered until roughly February 2033. That carries it from Android 16 all the way to Android 21 and is one of the longest support windows on any performance-focused Android phone, comfortably beating dedicated gaming handsets that typically stop at two or three years.
Is the iQOO 15 Ultra worth buying in 2026?
Yes, if you want maximum performance and plan to keep the phone. Even midway through 2026 you still have around six and a half years of security coverage ahead, the Snapdragon 8 Elite Gen 5 will not feel slow for years, and the 7,400mAh battery ages gracefully. The main caveats are the 227g weight and the import-only availability outside China.
Is the X100 Ultra still getting updates in 2026?
Yes, comfortably. Released in May 2024 under a four-OS, five-year security policy, it remains fully in its support window with years of patches and upgrades ahead.
How long will the X100 Ultra last?
Between the Snapdragon 8 Gen 3, robust IP rating, and security support running to 2029, it is built to serve as a primary phone for four to five years.
Full spec table
| Spec | iQOO 15 Ultra | X100 Ultra |
|---|---|---|
| Price (street) | $790 | $720 |
| Display | 6.85-inch AMOLED, 1440x3168, 144Hz, up to 8000 nits peak, Dolby Vision | 6.78-inch LTPO AMOLED, 120Hz, 3000 nits peak |
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | Snapdragon 8 Gen 3 |
| RAM | 16GB/24GB | 12GB/16GB |
| Storage | 256GB/512GB/1TB | 256GB/512GB/1TB |
| Battery | 7,400 mAh | 5,500 mAh |
| Charging | 100W wired, 40W wireless | 80W wired, 30W wireless |
| Rear cameras | 50MP main, 50MP telephoto 3x, 50MP ultra-wide | 50MP main, 200MP periscope telephoto, 50MP ultra-wide |
| Dimensions | 163.7 x 76.8 x 8.7 mm | 164.1 x 75.6 x 9.2 mm |
| Weight | 227 g | 229 g |
| Water resistance | IP68/IP69 | IP68/IP69 |
| Supported until | Feb 2033 | May 2029 |
More comparisons
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.