iQOO 15 vs X100
Winner
Vivo iQOO 15
Lifespan decides this one: the iQOO 15 is supported until Oct 2032 at $8.69 per month of safe use, while the X100 runs out in Nov 2028 ($22.26/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.
Value Score: iQOO 15 81 · X100 64 — methodology
Who should pick which
Beyond the scores — our take on each phone and the buyer it actually suits.
The iQOO 15 undercuts most 2026 flagships on price while matching their camera and battery specs, and now carries an unusually generous 7-year security-patch promise for a sub-flagship-priced phone.
Pick it if
- ✓ value-focused performance buyers
- ✓ gamers wanting long battery life on a budget
Skip it if
- ✗ you're on a major US carrier needing full 5G bands
- ✗ you want in-country warranty service
A flagship-chip value pick with a Zeiss triple camera, 120W charging, and a lighter build than the Pro.
Pick it if
- ✓ Value seekers who want flagship performance
- ✓ Users who want a lighter X-series phone
Skip it if
- ✗ You want wireless charging
- ✗ You need a 1-inch main sensor like the Pro
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's Qualcomm Snapdragon 8 Elite Gen 5 is simply the faster chip.
Camera systems are comparable on paper — pick by sample photos.
7,000mAh vs 5,000mAh — the iQOO 15 lasts longer between charges.
The iQOO 15 is supported until Oct 2032 — 47 months longer than the X100.
Overall value goes to the iQOO 15 at $8.69 per month of safe use.
Frequently asked
How long will the iQOO 15 get software updates?
iQOO/Vivo officially confirmed 5 years of major Android OS upgrades and 7 years of security patches for the iQOO 15, pushing its end-of-support date to around October 2032 — longer than most rival gaming-flagship phones at this price.
Can I use the iQOO 15 in the US?
You can only get one via import, since iQOO doesn't sell it officially in the US, Canada, or Australia. It also lacks Band 12/13/14/71, so expect unreliable or 4G-only service on major US carriers.
How fast does the Vivo X100 charge?
It supports 120W wired charging, faster than the X100 Pro's 100W, but it has no wireless charging.
Does the X100 have a telephoto camera?
Yes, it includes a 64MP periscope telephoto with 3x optical zoom alongside 50MP main and ultra-wide cameras.
Full spec table
| Spec | iQOO 15 | X100 |
|---|---|---|
| Price (street) | $650 | $620 |
| Display | 6.85-inch 2K LTPO OLED, 144Hz, up to 6000 nits peak brightness | 6.78-inch LTPO AMOLED, 2800x1260, 120Hz, up to 3000 nits peak |
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | MediaTek Dimensity 9300 |
| RAM | 12GB/16GB | 12GB/16GB |
| Storage | 256GB/512GB/1TB | 256GB/512GB |
| Battery | 7,000 mAh | 5,000 mAh |
| Charging | 100W wired, 40W wireless | 120W wired |
| Rear cameras | 50MP main, 50MP ultra-wide, 50MP periscope 3x | 50MP main, 50MP ultra-wide, 64MP telephoto 3x periscope |
| Dimensions | 163.35 x 76.8 x 8.14-8.28 mm | 164.1 × 75.3 × 8.2 mm |
| Weight | 216 g | 202 g |
| Water resistance | IP68/IP69 | IP68 |
| Supported until | Oct 2032 | Nov 2028 |
More comparisons
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.