Spark 40 5G vs Redmi Turbo 4
It depends
Too close to call outright
These two are within 4 points overall — it genuinely depends on price on the day. The Redmi Turbo 4 edges both longevity and performance, so prefer it when prices are close.
Value Score: Spark 40 5G 72 · Redmi Turbo 4 76 — methodology
The lifespan decider
When specs are close, support length decides it — this is what each phone costs per month of safe use.
Category by category
The Redmi Turbo 4's screen is the better one — 6.67-inch ltps oled, 1.5k, 120hz, 3200 nits peak.
The Redmi Turbo 4's MediaTek Dimensity 8400-Ultra (4nm) is simply the faster chip.
The Redmi Turbo 4 has the stronger camera system (2 real rear lenses vs 1).
Battery capacities are close enough not to decide this.
The Redmi Turbo 4 is supported until Jan 2029 — 4 months longer than the Spark 40 5G.
Overall value goes to the Redmi Turbo 4 at $7.04 per month of safe use.
Full spec table
| Spec | Spark 40 5G | Redmi Turbo 4 |
|---|---|---|
| Price (street) | $115 | $215 |
| Display | 6.75-inch IPS LCD, HD+, 120Hz | 6.67-inch LTPS OLED, 1.5K, 120Hz, 3200 nits peak |
| Chipset | MediaTek Dimensity 6400 | MediaTek Dimensity 8400-Ultra (4nm) |
| RAM | 4GB/8GB | 12GB/16GB |
| Storage | 128GB/256GB | 256GB/512GB |
| Battery | 6,000 mAh | 6,550 mAh |
| Charging | 18W wired | 90W wired |
| Rear cameras | 50MP main | 50MP main, 8MP ultra-wide |
| Dimensions | 167.7 × 77.9 × 8 mm | 161 × 75.2 × 8.1 mm |
| Weight | 194 g | 204 g |
| Water resistance | Not rated | IP68 |
| Supported until | Aug 2028 | Jan 2029 |
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.