PhoneLifespan

ROG Phone 9 vs Mix Flip

vs

Winner

Asus ROG Phone 9

Lifespan decides this one: the ROG Phone 9 is supported until Nov 2029 at $24.35 per month of safe use, while the Mix Flip runs out in Jul 2028 ($33.48/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: ROG Phone 9 58 · Mix Flip 54 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 $999
Safe to buy$24.35/mo
2024◆ Buy-by Nov 20272029
Xiaomi Mix Flip $850
Buy with care$33.48/mo
2024◆ Buy-by Jul 20262028

Category by category

Display
ROG Phone 9 60Mix Flip 80

The Mix Flip's screen is the better one — foldable clamshell: 6.86-inch ltpo amoled main (2912x1224, 120hz) plus 4.01-inch amoled cover (1392x1208, 120hz), dolby vision.

Performance
ROG Phone 9 98Mix Flip 92

The ROG Phone 9's Qualcomm Snapdragon 8 Elite is simply the faster chip.

Camera
ROG Phone 9 67Mix Flip 67

Camera systems are comparable on paper — pick by sample photos.

Battery
ROG Phone 9 96Mix Flip 76

5,800mAh vs 4,780mAh — the ROG Phone 9 lasts longer between charges.

Software longevity
ROG Phone 9 49Mix Flip 30

The ROG Phone 9 is supported until Nov 2029 — 16 months longer than the Mix Flip.

Value
ROG Phone 9 58Mix Flip 54

Overall value goes to the ROG Phone 9 at $24.35 per month of safe use.

Full spec table
SpecROG Phone 9Mix Flip
Price (street)$999$850
Display6.78-inch LTPO AMOLED, 1080x2400, 185HzFoldable clamshell: 6.86-inch LTPO AMOLED main (2912x1224, 120Hz) plus 4.01-inch AMOLED cover (1392x1208, 120Hz), Dolby Vision
ChipsetQualcomm Snapdragon 8 EliteQualcomm Snapdragon 8 Gen 3
RAM12GB/16GB12GB/16GB
Storage256GB/512GB256GB/512GB/1TB
Battery5,800 mAh4,780 mAh
Charging65W wired, 15W wireless67W wired
Rear cameras50MP main, 13MP ultra-wide, 5MP macro50MP main, 50MP telephoto 2x
Dimensions163.8 × 76.8 × 8.9 mmUnfolded 167.5 × 74.0 × 7.8 mm; folded 85.5 × 74.0 × 16.0 mm
Weight227 g192 g
Water resistanceIP68IP54
Supported untilNov 2029Jul 2028

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