Agni 3 vs Spark 40 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 Agni 3 runs out in Oct 2028 ($8.83/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Agni 3 72 · Spark 40 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.

Lava Agni 3 $245

Buy with care$8.83/mo

2024◆ Buy-by Oct 20262028

Tecno Spark 40 5G $115

Buy with care$4.40/mo

2025◆ Buy-by Aug 20262028

Category by category

Display

Agni 3 70Spark 40 5G 70

Both displays are effectively the same class.

Performance

Agni 3 58Spark 40 5G 55

Performance is a wash — same chip tier.

Camera

Agni 3 79Spark 40 5G 55

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

Battery

Agni 3 80Spark 40 5G 100

6,000mAh vs 5,000mAh — the Spark 40 5G lasts longer between charges.

Software longevity

Agni 3 33Spark 40 5G 31

Both phones' support windows end around the same time.

Value

Agni 3 72Spark 40 5G 72

Pound for pound, these two are equally good deals.

Full spec table

Spec	Agni 3	Spark 40 5G
Price (street)	$245	$115
Display	6.78-inch AMOLED, FHD+, 120Hz, 10-bit; plus a 1.74-inch secondary AMOLED on the back	6.75-inch IPS LCD, HD+, 120Hz
Chipset	MediaTek Dimensity 7300X (4nm)	MediaTek Dimensity 6400
RAM	8GB	4GB/8GB
Storage	128GB/256GB	128GB/256GB
Battery	5,000 mAh	6,000 mAh
Charging	66W wired	18W wired
Rear cameras	50MP main, 8MP ultra-wide, 8MP depth	50MP main
Dimensions	163.7 × 75.5 × 8.8 mm	167.7 × 77.9 × 8 mm
Weight	212 g	194 g
Water resistance	IP64	Not rated
Supported until	Oct 2028	Aug 2028

Agni 3 full verdict →Spark 40 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.