PhoneLifespan

P3x 5G vs Galaxy A55 5G

vs

Winner

Realme P3x 5G

The P3x 5G wins this one, taking battery decisively. Against the Galaxy A55 5G it's also the sounder buy at $4.64 per month of safe use.

Value Score: P3x 5G 73 · Galaxy A55 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 P3x 5G $150
Buy with care$4.64/mo
2025◆ Buy-by Feb 20272029
Samsung Galaxy A55 5G $300
Buy with care$9.12/mo
2024◆ Buy-by Mar 20272029

Category by category

Display
P3x 5G 70Galaxy A55 5G 70

Both displays are effectively the same class.

Performance
P3x 5G 55Galaxy A55 5G 60

The Galaxy A55 5G's Exynos 1480 is simply the faster chip.

Camera
P3x 5G 55Galaxy A55 5G 67

The Galaxy A55 5G has the stronger camera system (2 real rear lenses vs 1).

Battery
P3x 5G 100Galaxy A55 5G 80

6,000mAh vs 5,000mAh — the P3x 5G lasts longer between charges.

Software longevity
P3x 5G 38Galaxy A55 5G 39

Both phones' support windows end around the same time.

Value
P3x 5G 73Galaxy A55 5G 67

Overall value goes to the P3x 5G at $4.64 per month of safe use.

Full spec table
SpecP3x 5GGalaxy A55 5G
Price (street)$150$300
Display6.72-inch IPS LCD, FHD+, 120Hz6.6-inch Super AMOLED, 1080x2340 (FHD+), 120Hz
ChipsetMediaTek Dimensity 6400 (6nm)Exynos 1480
RAM6GB/8GB8GB/12GB
Storage128GB128GB/256GB
Battery6,000 mAh5,000 mAh
Charging45W wired SuperVOOC25W wired
Rear cameras50MP main, 2MP depth50MP main, 12MP ultra-wide, 5MP macro
Dimensions165.7 × 76.2 × 7.99 mm161.1 × 77.4 × 8.2 mm
Weight197 g213 g
Water resistanceIP68/IP69IP67
Supported untilFeb 2029Mar 2029
P3x 5G full verdict →Galaxy A55 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.