Spark 40 5G vs T4 5G

Phone 1

Phone 2

Winner

Tecno Spark 40 5G

Lifespan decides this one: the Spark 40 5G is supported until Aug 2028 at $4.40 per month of safe use, while the T4 5G runs out in Apr 2028 ($11.62/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Spark 40 5G 72 · T4 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.

Tecno Spark 40 5G $115

Buy with care$4.40/mo

2025◆ Buy-by Aug 20262028

Vivo T4 5G $260

Buy with care$11.62/mo

2025◆ Buy-by Apr 20262028

Category by category

Display

Spark 40 5G 70T4 5G 80

The T4 5G's screen is the better one — 6.77-inch amoled, fhd+, 120hz, 5000 nits peak.

Performance

Spark 40 5G 55T4 5G 64

The T4 5G's Qualcomm Snapdragon 7s Gen 3 is simply the faster chip.

Camera

Spark 40 5G 55T4 5G 55

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

Battery

Spark 40 5G 100T4 5G 100

Battery capacities are close enough not to decide this.

Software longevity

Spark 40 5G 31T4 5G 27

The Spark 40 5G is supported until Aug 2028 — 4 months longer than the T4 5G.

Value

Spark 40 5G 72T4 5G 72

Pound for pound, these two are equally good deals.

Full spec table

Spec	Spark 40 5G	T4 5G
Price (street)	$115	$260
Display	6.75-inch IPS LCD, HD+, 120Hz	6.77-inch AMOLED, FHD+, 120Hz, 5000 nits peak
Chipset	MediaTek Dimensity 6400	Qualcomm Snapdragon 7s Gen 3
RAM	4GB/8GB	8GB/12GB
Storage	128GB/256GB	128GB/256GB
Battery	6,000 mAh	7,300 mAh
Charging	18W wired	90W wired
Rear cameras	50MP main	50MP main, 2MP depth
Dimensions	167.7 × 77.9 × 8 mm	163.4 × 76.4 × 7.9 mm
Weight	194 g	199 g
Water resistance	Not rated	IP65
Supported until	Aug 2028	Apr 2028

Spark 40 5G full verdict →T4 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.