PhoneLifespan

P3x 5G vs Galaxy M55 5G

vs

It depends

Too close to call outright

These two are within 1 point overall — it genuinely depends on price on the day. The Galaxy M55 5G edges both longevity and performance, so prefer it when prices are close.

Value Score: P3x 5G 73 · Galaxy M55 5G 72 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 M55 5G $270
Buy with care$8.10/mo
2024◆ Buy-by Mar 20272029

Category by category

Display
P3x 5G 70Galaxy M55 5G 70

Both displays are effectively the same class.

Performance
P3x 5G 55Galaxy M55 5G 70

The Galaxy M55 5G's Qualcomm Snapdragon 7 Gen 1 is simply the faster chip.

Camera
P3x 5G 55Galaxy M55 5G 67

The Galaxy M55 5G has the stronger camera system (2 real rear lenses vs 1).

Battery
P3x 5G 100Galaxy M55 5G 80

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

Software longevity
P3x 5G 38Galaxy M55 5G 40

Both phones' support windows end around the same time.

Value
P3x 5G 73Galaxy M55 5G 72

Pound for pound, these two are equally good deals.

Full spec table
SpecP3x 5GGalaxy M55 5G
Price (street)$150$270
Display6.72-inch IPS LCD, FHD+, 120Hz6.7-inch Super AMOLED Plus, 1080x2400 (FHD+), 120Hz
ChipsetMediaTek Dimensity 6400 (6nm)Qualcomm Snapdragon 7 Gen 1
RAM6GB/8GB8GB/12GB
Storage128GB128GB/256GB
Battery6,000 mAh5,000 mAh
Charging45W wired SuperVOOC45W wired
Rear cameras50MP main, 2MP depth50MP main, 8MP ultra-wide, 2MP macro
Dimensions165.7 × 76.2 × 7.99 mm163.9 × 76.5 × 7.8 mm
Weight197 g180 g
Water resistanceIP68/IP69None
Supported untilFeb 2029Mar 2029

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