Looking for an honest Samsung Galaxy S25 Ultra 5G vs Xiaomi Redmi Note 15 5G comparison in 2026? We scored both smartphones on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Samsung Galaxy S25 Ultra 5G comes out ahead 78/100 to 48/100 — a 30-point gap. The widest gap is in performance, where the Samsung Galaxy S25 Ultra 5G pulls noticeably ahead. On price the Xiaomi Redmi Note 15 5G undercuts the Samsung Galaxy S25 Ultra 5G by 422% ($249 vs $1,299), which materially changes the value calculus for budget-conscious buyers.
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Samsung Galaxy S25 Ultra 5G clearly outperforms the Xiaomi Redmi Note 15 5G in the smartphones category, especially in performance (benchmark 220 vs 90), scoring 78 vs 48. If you want the better overall smartphones, Samsung Galaxy S25 Ultra 5G is the recommended choice.
Picking Samsung Galaxy S25 Ultra 5G over Xiaomi Redmi Note 15 5G means trading these off.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
| Spec | Samsung Galaxy S25 Ultra 5GW | Xiaomi Redmi Note 15 5G |
|---|---|---|
| Display | 6.9"✓ | 6.67" |
| Display Type | Dynamic AMOLED 2X | — |
| Refresh Rate | 120Hz | 120Hz |
| Chipset | Snapdragon 8 Elite | MediaTek Dimensity 1080 |
| RAM | 12GB | 12GB |
| Storage | 256GB |
Buy Samsung Galaxy S25 Ultra 5G if…
Buy the Samsung Galaxy S25 Ultra 5G if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Buy Xiaomi Redmi Note 15 5G if…
Choose the Xiaomi Redmi Note 15 5G if budget is your top priority — it offers competitive specs at a lower price point.
Samsung Galaxy S25 Ultra 5G clearly outperforms the Xiaomi Redmi Note 15 5G in the smartphones category, especially in performance (benchmark 220 vs 90), scoring 78 vs 48. If you want the better overall smartphones, Samsung Galaxy S25 Ultra 5G is the recommended choice.
Yes, Samsung Galaxy S25 Ultra 5G scores higher overall (78 vs 48).
Xiaomi Redmi Note 15 5G is cheaper at $249 vs $1299 for the Samsung Galaxy S25 Ultra 5G.
Buy the Samsung Galaxy S25 Ultra 5G if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Choose the Xiaomi Redmi Note 15 5G if budget is your top priority — it offers competitive specs at a lower price point.
Both have the same 5000mAh battery.
Samsung Galaxy S25 Ultra 5G has the larger display (6.9" vs 6.67").
Reviewed by VersusMatrix Editorial Team
Last updated: May 11, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.
Scores are relative within the smartphonescategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
| 512GB✓ |
| Main Camera | 200MP✓ | 108MP |
| Front Camera | 12MP | — |
| Battery | 5000mAh | 5000mAh |
| Charging | 45W✓ | 33W |
| OS | Android 15 | — |
| Water Resistance | IP68 | — |
| Weight | 218g | 199g✓ |
| Price | 1299$ | 249$ |
Samsung Galaxy S25 Ultra 5G has a higher-resolution main camera (200MP vs 108MP). Note that megapixels are one factor — sensor quality and processing also matter.
Xiaomi Redmi Note 15 5G is lighter at 199g vs 218g.