P3 Ultra 5G vs Galaxy A15 5G

Phone 1

Phone 2

Winner

Samsung Galaxy A15 5G

Lifespan decides this one: the Galaxy A15 5G is supported until Dec 2028 at $4.00 per month of safe use, while the P3 Ultra 5G runs out in Mar 2029 ($9.49/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: P3 Ultra 5G 74 · Galaxy A15 5G 67 — methodology

The lifespan decider

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

Realme P3 Ultra 5G $315

Buy with care$9.49/mo

2025◆ Buy-by Mar 20272029

Samsung Galaxy A15 5G $120

Buy with care$4.00/mo

2023◆ Buy-by Dec 20262028

Category by category

Display

P3 Ultra 5G 70Galaxy A15 5G 50

The P3 Ultra 5G's screen is the better one — 6.83-inch amoled, 1.5k, 120hz, up to 1500 nits peak, gorilla glass 7i.

Performance

P3 Ultra 5G 74Galaxy A15 5G 38

The P3 Ultra 5G's MediaTek Dimensity 8350 Ultra (4nm) is simply the faster chip.

Camera

P3 Ultra 5G 67Galaxy A15 5G 55

The P3 Ultra 5G has the stronger camera system (2 real rear lenses vs 1).

Battery

P3 Ultra 5G 100Galaxy A15 5G 80

6,000mAh vs 5,000mAh — the P3 Ultra 5G lasts longer between charges.

Software longevity

P3 Ultra 5G 40Galaxy A15 5G 36

The P3 Ultra 5G is supported until Mar 2029 — 3 months longer than the Galaxy A15 5G.

Value

P3 Ultra 5G 74Galaxy A15 5G 67

Overall value goes to the P3 Ultra 5G at $9.49 per month of safe use.

Full spec table

Spec	P3 Ultra 5G	Galaxy A15 5G
Price (street)	$315	$120
Display	6.83-inch AMOLED, 1.5K, 120Hz, up to 1500 nits peak, Gorilla Glass 7i	6.5-inch Super AMOLED, 1080x2340 (FHD+), 90Hz
Chipset	MediaTek Dimensity 8350 Ultra (4nm)	Dimensity 6100+
RAM	8GB/12GB	4GB/6GB/8GB
Storage	128GB/256GB/512GB	128GB/256GB
Battery	6,000 mAh	5,000 mAh
Charging	80W wired (100% in 47 min), 5W reverse	25W wired
Rear cameras	50MP main, 8MP ultra-wide	50MP main, 5MP ultra-wide, 2MP macro
Dimensions	163.1 × 76.9 × 7.4 mm	160.1 × 76.8 × 8.4 mm
Weight	183 g	200 g
Water resistance	IP68/IP69	None
Supported until	Mar 2029	Dec 2028

P3 Ultra 5G full verdict →Galaxy A15 5G 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.