K12 vs Redmi K70 Ultra
It depends
Too close to call outright
These two are within 3 points overall — it genuinely depends on price on the day. The Redmi K70 Ultra edges both longevity and performance, so prefer it when prices are close.
Value Score: K12 70 · Redmi K70 Ultra 73 — 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 K70 Ultra's screen is the better one — 6.67-inch amoled, 1.5k, 144hz, 4000 nits peak, dolby vision.
The Redmi K70 Ultra's MediaTek Dimensity 9300+ (4nm) is simply the faster chip.
Camera systems are comparable on paper — pick by sample photos.
Battery capacities are close enough not to decide this.
The Redmi K70 Ultra is supported until Jul 2028 — 3 months longer than the K12.
Pound for pound, these two are equally good deals.
Full spec table
| Spec | K12 | Redmi K70 Ultra |
|---|---|---|
| Price (street) | $265 | $380 |
| Display | 6.7-inch AMOLED, FHD+, 120Hz, HDR10+, 1100 nits peak | 6.67-inch AMOLED, 1.5K, 144Hz, 4000 nits peak, Dolby Vision |
| Chipset | Qualcomm Snapdragon 7 Gen 3 (4nm) | MediaTek Dimensity 9300+ (4nm) |
| RAM | 8GB/12GB | 12GB/16GB/24GB |
| Storage | 256GB/512GB | 256GB/512GB/1TB |
| Battery | 5,500 mAh | 5,500 mAh |
| Charging | 100W wired SuperVOOC | 120W wired |
| Rear cameras | 50MP main, 8MP ultra-wide | 50MP main, 8MP ultra-wide, 2MP macro |
| Dimensions | 162.5 × 75.3 × 8.4 mm | 160.4 × 75.1 × 8.4 mm |
| Weight | 186 g | 211 g |
| Water resistance | IP54 | IP68 |
| Supported until | Apr 2028 | Jul 2028 |
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.