Xiaomi MIX Fold 4 vs Xiaomi Redmi K70 Ultra
Compare Xiaomi MIX Fold 4 vs Xiaomi Redmi K70 Ultra side by side: Qualcomm Snapdragon 8 Gen 3 vs MediaTek Dimensity 9300+ (4 nm), 50MP vs 50MP camera, 5100mAh…
Xiaomi
Xiaomi MIX Fold 4
$1,499
6categories won
Xiaomi
Redmi K70 Ultra
$499
11categories won
4 categories tied · 21 scored in total · add a third phone
Which one wins?
Xiaomi Redmi K70 Ultra takes the overall win
The Xiaomi Redmi K70 Ultra proves superior overall against the Xiaomi MIX Fold 4, outperforming on battery endurance and daily usability. In camera testing, the Xiaomi MIX Fold 4 leads with sharper imaging, while battery endurance leans towards the Redmi K70 Ultra. Choose the Redmi K70 Ultra if you want the highest performance ceiling, or opt for the Xiaomi MIX Fold 4 if its specific hardware strengths better fit your budget.
Redmi K70 Ultra takes battery honors offering 5,500 mAh alongside 120W charging.
Redmi K70 Ultra provides greater sustained gaming output with its MediaTek Dimensity 9300+ (4 nm) and 24GB RAM.
Xiaomi MIX Fold 4 wins photography with 50MP main imaging and 2x dedicated optical zoom.
Redmi K70 Ultra wins on budget and value at $499 compared to $1499.
Category verdicts are computed algorithmically from verified technical specifications and hardware benchmarks. Rows where neither figure is objectively better — screen size preference, operating system choice, aesthetic build materials — are displayed for direct reference without scoring bias.
Xiaomi MIX Fold 4 vs Redmi K70 Ultra: specifications compared
Display
| Specification | Xiaomi MIX Fold 4 | Redmi K70 Ultra |
|---|---|---|
| Screen size | 7.98" | 6.67" |
| Resolution | 2224 x 2488Winner | 1220 x 2712 |
| Pixel density | 418 ppi | 446 ppiWinner |
| Refresh rate | 120 Hz | 144 HzWinner |
| Peak brightness | 3000 nits | 4000 nitsWinner |
Performance
| Specification | Xiaomi MIX Fold 4 | Redmi K70 Ultra |
|---|---|---|
| Chipset | Qualcomm Snapdragon 8 Gen 3 | MediaTek Dimensity 9300+ (4 nm) |
| Process node | 4 nm | 4 nm |
| AnTuTu score | 2,110,000 | 3,200,000Winner |
| Geekbench multi | 6940 | 10800Winner |
| Maximum RAM | 16 GB | 24 GBWinner |
| Maximum storage | 1TB | 1TB |
Camera
| Specification | Xiaomi MIX Fold 4 | Redmi K70 Ultra |
|---|---|---|
| Main sensor | 50 MP | 50 MP |
| Rear cameras | 4Winner | 3 |
| Optical zoom | 2x | — |
| Ultrawide | 12 MPWinner | 8 MP |
| Selfie camera | 16 MP | 20 MPWinner |
| Max video | 8K@24fps, 4K@60fps Dolby Vision | 8K at 24fps |
Battery and charging
| Specification | Xiaomi MIX Fold 4 | Redmi K70 Ultra |
|---|---|---|
| Capacity | 5,100 mAh | 5,500 mAhWinner |
| Wired charging | 67 W | 120 WWinner |
| Wireless charging | 50 WWinner | 25 W |
Design
| Specification | Xiaomi MIX Fold 4 | Redmi K70 Ultra |
|---|---|---|
| Weight | 226 g | 211 gWinner |
| Thickness | 4.59 mmWinner | 8.39 mm |
| Water resistance | IPX8 | IP68 |
| Build | All-carbon fiber architecture, high-strength steel hinge, Dragon Crystal Glass | High-strength aluminum alloy frame, Xiaomi Longjing Glass front, glass back |
Software and support
| Specification | Xiaomi MIX Fold 4 | Redmi K70 Ultra |
|---|---|---|
| Operating system | Android 14 | Android 14 (HyperOS) |
| OS updates | 4 years | 4 years |
| Security updates | 5 yearsWinner | 4 years |
Connectivity and value
| Specification | Xiaomi MIX Fold 4 | Redmi K70 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 (802.11be) | Wi-Fi 7 (802.11be, tri-band 2.4/5/6GHz, 320MHz bandwidth) |
| Storage expansion | None | None |
| 3.5mm jack | No | No |
| Launch price | $1,499 | $499Winner |
Xiaomi MIX Fold 4
The Xiaomi MIX Fold 4 sets an apex benchmark for book-style foldables, measuring a breathtaking 4.59mm unfolded and 9.47mm folded while weighing only 226g. Equipped with quad Leica cameras including dual telephotos (2x floating + 5x periscope), IPX8 waterproofing, 5,100mAh battery, and 50W wireless charging.
- Display
- 7.98"
- Chipset
- Qualcomm Snapdragon 8 Gen 3
- Main camera
- 50MP
- Battery
- 5,100mAh
Xiaomi Redmi K70 Ultra
The Xiaomi Redmi K70 Ultra captured global acclaim by equipping MediaTek’s All-Big-Core Dimensity 9300+ processor with an independent D1 graphics chip, 144Hz 4000-nit screen, IP68 water resistance, and 120W HyperCharge under $500.
- Display
- 6.67"
- Chipset
- MediaTek Dimensity 9300+ (4 nm)
- Main camera
- 50MP
- Battery
- 5,500mAh