PhoneLifespan

Phone (3a) Pro vs X100

vs

Winner

Nothing Phone (3a) Pro

Lifespan decides this one: the Phone (3a) Pro is supported until Mar 2031 at $7.57 per month of safe use, while the X100 runs out in Nov 2028 ($21.16/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Phone (3a) Pro 71 · X100 64 — methodology

The lifespan decider

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

Nothing Phone (3a) Pro $429
Safe to buy$7.57/mo
2025◆ Buy-by Mar 20292031
Vivo X100 $620
Buy with care$21.16/mo
2023◆ Buy-by Nov 20262028

Category by category

Display
Phone (3a) Pro 80X100 90

The X100's screen is the better one — 6.78-inch ltpo amoled, 2800x1260, 120hz, up to 3000 nits peak.

Performance
Phone (3a) Pro 64X100 93

The X100's MediaTek Dimensity 9300 is simply the faster chip.

Camera
Phone (3a) Pro 79X100 79

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

Battery
Phone (3a) Pro 80X100 80

Battery capacities are close enough not to decide this.

Software longevity
Phone (3a) Pro 67X100 35

The Phone (3a) Pro is supported until Mar 2031 — 27 months longer than the X100.

Value
Phone (3a) Pro 71X100 64

Overall value goes to the Phone (3a) Pro at $7.57 per month of safe use.

Full spec table
SpecPhone (3a) ProX100
Price (street)$429$620
Display6.77-inch AMOLED, 1080×2392 (FHD+), up to 120Hz, 3000 nits peak6.78-inch LTPO AMOLED, 2800x1260, 120Hz, up to 3000 nits peak
ChipsetSnapdragon 7s Gen 3MediaTek Dimensity 9300
RAM12GB12GB/16GB
Storage256GB256GB/512GB
Battery5,000 mAh5,000 mAh
Charging50W wired, no wireless120W wired
Rear cameras50MP main, 50MP periscope telephoto 3x, 8MP ultra-wide50MP main, 50MP ultra-wide, 64MP telephoto 3x periscope
Dimensions163.52 × 77.50 × 8.39 mm164.1 × 75.3 × 8.2 mm
Weight211 g202 g
Water resistanceIP64IP68
Supported untilMar 2031Nov 2028
Phone (3a) Pro full verdict →X100 full verdict →Longevity master board →

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