Phone (3a) vs K13 5G

Phone 1

Phone 2

Winner

Nothing Phone (3a)

Lifespan decides this one: the Phone (3a) is supported until Mar 2031 at $6.18 per month of safe use, while the K13 5G runs out in Apr 2029 ($6.14/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Phone (3a) 75 · K13 5G 74 — 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) $349

Safe to buy$6.18/mo

2025◆ Buy-by Mar 20292031

Oppo K13 5G $210

Buy with care$6.14/mo

2025◆ Buy-by Apr 20272029

Category by category

Display

Phone (3a) 80K13 5G 70

The Phone (3a)'s screen is the better one — 6.77-inch amoled, 1080×2392 (fhd+), up to 120hz, 3000 nits peak.

Performance

Phone (3a) 64K13 5G 55

The Phone (3a)'s Snapdragon 7s Gen 3 is simply the faster chip.

Camera

Phone (3a) 79K13 5G 55

The Phone (3a) has the stronger camera system (3 real rear lenses vs 1).

Battery

Phone (3a) 80K13 5G 100

7,000mAh vs 5,000mAh — the K13 5G lasts longer between charges.

Software longevity

Phone (3a) 67K13 5G 41

The Phone (3a) is supported until Mar 2031 — 22 months longer than the K13 5G.

Value

Phone (3a) 75K13 5G 74

Pound for pound, these two are equally good deals.

Full spec table

Spec	Phone (3a)	K13 5G
Price (street)	$349	$210
Display	6.77-inch AMOLED, 1080×2392 (FHD+), up to 120Hz, 3000 nits peak	6.67-inch AMOLED, 120Hz
Chipset	Snapdragon 7s Gen 3	Qualcomm Snapdragon 6 Gen 4
RAM	8GB/12GB	8GB/12GB
Storage	128GB/256GB	128GB/256GB/512GB
Battery	5,000 mAh	7,000 mAh
Charging	50W wired, no wireless	80W wired
Rear cameras	50MP main, 50MP telephoto 2x, 8MP ultra-wide	50MP main, 2MP depth
Dimensions	163.52 × 77.50 × 8.35 mm	162.0 x 75.0 x 8.5 mm
Weight	201 g	208 g
Water resistance	IP64	IP69
Supported until	Mar 2031	Apr 2029

Phone (3a) full verdict →K13 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.