15 vs Open
Winner
OnePlus 15
Lifespan decides this one: the 15 is supported until Nov 2031 at $13.36 per month of safe use, while the Open runs out in Oct 2028 ($33.63/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.
Value Score: 15 72 · Open 56 — methodology
Who should pick which
Beyond the scores — our take on each phone and the buyer it actually suits.
A 7,300mAh battery monster with security updates promised into late 2031 — one of the cheapest flagships per month of safe ownership you can buy in 2026.
Pick it if
- ✓ Battery-first power users
- ✓ Performance/gaming buyers
- ✓ Keep-it-5-years owners
Skip it if
- ✗ You prioritize camera quality over speed
- ✗ You want 7 years of updates like a Pixel or Galaxy S
OnePlus's only foldable pairs a genuinely usable 6.31-inch cover screen with a flagship-grade camera, and is now far cheaper used.
Pick it if
- ✓ Multitaskers who want a tablet-size inner screen on the go
- ✓ Buyers who disliked the cramped cover screens of older folds
- ✓ Bargain hunters wanting a premium foldable secondhand
Skip it if
- ✗ You need strong water and dust resistance
- ✗ You want wireless charging or the very latest chipset
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 Open's screen is the better one — 7.82-inch 2k ltpo3 fluid amoled inner foldable (2440×2268, 426 ppi) + 6.31-inch 2k amoled cover (2484×1116, 431 ppi), both 120hz, up to 2800 nits peak.
The 15's Qualcomm Snapdragon 8 Elite Gen 5 is simply the faster chip.
Camera systems are comparable on paper — pick by sample photos.
7,300mAh vs 4,805mAh — the 15 lasts longer between charges.
The 15 is supported until Nov 2031 — 37 months longer than the Open.
Overall value goes to the 15 at $13.36 per month of safe use.
Frequently asked
How long will the OnePlus 15 be supported?
OnePlus promises 4 major Android OS updates and 6 years of security patches for the OnePlus 15, which puts end of support at roughly November 2031. If you buy in mid-2026, that still leaves about 5 years and 4 months of safe ownership — around $13 per supported month at the current $849 street price.
Is the OnePlus 15 better than the OnePlus 13?
It is faster (Snapdragon 8 Elite Gen 5 vs 8 Elite), has a much bigger 7,300mAh battery vs 6,000mAh, and a 165Hz display. But the OnePlus 13 had a sharper 1440p panel and Hasselblad-tuned cameras that many reviewers still prefer. Buy the 15 for battery and longevity; the discounted 13 remains the better pure camera phone.
How usable is the OnePlus Open's cover screen?
Very usable. The 6.31-inch outer display has near-normal phone proportions, so you can use the Open closed like a regular phone and only unfold to the 7.82-inch inner screen when you want more space.
Is the OnePlus Open water resistant?
Only partly. It carries an IPX4 rating, meaning it resists splashes and light rain but has no official dust protection and should not be submerged.
Full spec table
| Spec | 15 | Open |
|---|---|---|
| Price (street) | $849 | $900 |
| Display | 6.78-inch LTPO AMOLED, 2772x1272, 165Hz, 1800 nits peak | 7.82-inch 2K LTPO3 Fluid AMOLED inner foldable (2440×2268, 426 ppi) + 6.31-inch 2K AMOLED cover (2484×1116, 431 ppi), both 120Hz, up to 2800 nits peak |
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | Snapdragon 8 Gen 2 |
| RAM | 12GB/16GB | 16GB |
| Storage | 256GB/512GB/1TB | 512GB |
| Battery | 7,300 mAh | 4,805 mAh |
| Charging | 120W wired, 50W wireless | 67W SUPERVOOC wired, no wireless |
| Rear cameras | 50MP main, 50MP periscope 3.5x, 50MP ultra-wide | 48MP main, 48MP ultra-wide, 64MP periscope telephoto 3x |
| Dimensions | 161.4 × 76.7 × 8.1 mm | Unfolded 153.4 × 143.1 × 5.8 mm; Folded 153.4 × 73.3 × 11.7 mm |
| Weight | 211 g | 239 g |
| Water resistance | IP68/IP69K | IPX4 |
| Supported until | Nov 2031 | Oct 2028 |
More comparisons
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.