PhoneLifespan

ROG Phone 9 FE vs Open

vs

It depends

Too close to call outright

These two are within 1 point overall — it genuinely depends on price on the day. The ROG Phone 9 FE edges both longevity and performance, so prefer it when prices are close.

Value Score: ROG Phone 9 FE 58 · Open 57 methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Asus ROG Phone 9 FE $850
Buy with care$26.89/mo
2025◆ Buy-by Feb 20272029
OnePlus Open $900
Buy with care$32.07/mo
2023◆ Buy-by Oct 20262028

Category by category

Display
ROG Phone 9 FE 80Open 90

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.

Performance
ROG Phone 9 FE 92Open 85

The ROG Phone 9 FE's Qualcomm Snapdragon 8 Gen 3 (4nm) is simply the faster chip.

Camera
ROG Phone 9 FE 67Open 79

The Open has the stronger camera system (3 real rear lenses vs 2).

Battery
ROG Phone 9 FE 90Open 76

5,500mAh vs 4,805mAh — the ROG Phone 9 FE lasts longer between charges.

Software longevity
ROG Phone 9 FE 38Open 33

The ROG Phone 9 FE is supported until Feb 2029 — 4 months longer than the Open.

Value
ROG Phone 9 FE 58Open 57

Pound for pound, these two are equally good deals.

Full spec table
SpecROG Phone 9 FEOpen
Price (street)$850$900
Display6.78-inch AMOLED LTPO, FHD+, 165Hz, Gorilla Glass Victus 27.82-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
ChipsetQualcomm Snapdragon 8 Gen 3 (4nm)Snapdragon 8 Gen 2
RAM12GB/16GB16GB
Storage256GB512GB
Battery5,500 mAh4,805 mAh
Charging65W wired, wireless charging67W SUPERVOOC wired, no wireless
Rear cameras50MP main, 13MP ultra-wide, 5MP macro48MP main, 48MP ultra-wide, 64MP periscope telephoto 3x
Dimensions163.8 × 76.8 × 8.9 mmUnfolded 153.4 × 143.1 × 5.8 mm; Folded 153.4 × 73.3 × 11.7 mm
Weight225 g239 g
Water resistanceIP68IPX4
Supported untilFeb 2029Oct 2028

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.