Tecno Spark Slim vs Vivo vivo iQOO 15 Ultra
Vivo vivo iQOO 15 Ultra — Pick the Vivo vivo iQOO 15 Ultra — it leads these groups: Display 3 Battery 3 Performance 1
Tap a group name to see the proof · The scoring method is public
The short answer
Vivo vivo iQOO 15 Ultra wins this comparison with a score of 46/100, ahead of Tecno Spark Slim (31).
The main differences: Peak brightness (4500 nits vs 8000 nits) · Pixel density (440 ppi vs 508 ppi) · Battery capacity (5160 mAh vs 7400 mAh).
Scores are computed from 25 public spec attributes; missing values stay marked unknown in tables and are imputed at the category median, never passed off as measured.
At a glance
0–100 per group, normalized within the category · Tap a group for details
How to choose
Pick the Tecno Spark Slim if you care about…
- Weight 156 g +71 g vs 227 g
- Thickness 5.9 mm +2.8 mm vs 8.7 mm
- Width 75.9 mm +0.9 mm vs 76.8 mm
Pick the Vivo vivo iQOO 15 Ultra if you care about…
- Screen size 6.8 in +0.1 in vs 6.8 in
- Peak brightness 8000 nits +3500 nits vs 4500 nits
- Pixel density 508 ppi +68 ppi vs 440 ppi
- Battery capacity 7400 mAh +2240 mAh vs 5160 mAh
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Where they differ
15 · Only rows that actually differ, with a verdict per row
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | Where they differ | |
|---|---|---|---|
| Peak brightness | 4500 nits | 8000 nits | Vivo vivo iQOO 15 Ultra |
| Pixel density | 440 ppi | 508 ppi | Vivo vivo iQOO 15 Ultra |
| Battery capacity | 5160 mAh | 7400 mAh | Vivo vivo iQOO 15 Ultra |
| Wired charging | 45 W | 100 W | Vivo vivo iQOO 15 Ultra |
| Wireless charging | — | ✓ | Vivo vivo iQOO 15 Ultra |
| RAM | 8 GB | 16 GB | Vivo vivo iQOO 15 Ultra |
| Chipset | Helio G200 | Snapdragon 8 Elite Gen 5 | Depends |
| OS | Android 15 | Android 16 | Depends |
| Selfie camera | 13 MP | 32 MP | Vivo vivo iQOO 15 Ultra |
| Weight | 156 g | 227 g | Tecno Spark Slim |
| Thickness | 5.9 mm | 8.7 mm | Tecno Spark Slim |
| Water resistant (IP68) | — | ✓ | Vivo vivo iQOO 15 Ultra |
| Length | 164.2 mm | 163.7 mm | Vivo vivo iQOO 15 Ultra |
| Width | 75.9 mm | 76.8 mm | Tecno Spark Slim |
| Colors | Slim White, Cool Black | Black, Silver | Depends |
The record
Grouped and collapsible · Tap a group to fold
Display5▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| Screen size | 6.8 in | 6.8 in |
| Peak brightness | 4500 nits | 8000 nits |
| Refresh rate | 144 Hz | 144 Hz |
| Pixel density | 440 ppi | 508 ppi |
| Display type | AMOLED | AMOLED |
Battery4▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| Battery capacity | 5160 mAh | 7400 mAh |
| Wired charging | 45 W | 100 W |
| Wireless charging power | — | 40 W |
| Wireless charging | — | ✓ |
Performance4▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| RAM | 8 GB | 16 GB |
| Chipset | Helio G200 | Snapdragon 8 Elite Gen 5 |
| OS | Android 15 | Android 16 |
| Storage | 256 GB | 256 GB |
Camera2▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Selfie camera | 13 MP | 32 MP |
Design6▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| Weight | 156 g | 227 g |
| Thickness | 5.9 mm | 8.7 mm |
| Water resistant (IP68) | — | ✓ |
| Length | 164.2 mm | 163.7 mm |
| Width | 75.9 mm | 76.8 mm |
| Colors | Slim White, Cool Black | Black, Silver |
Memory1▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| Memory card slot | — | — |
Platform1▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| CPU cores | 8 | 8 |
Features2▾
| Tecno Spark Slim | Vivo vivo iQOO 15 Ultra | |
|---|---|---|
| Face unlock | — | — |
| Fingerprint sensor | ✓ | ✓ |
Data sources: GSMArena
FAQ
Which is better, Tecno Spark Slim or Vivo vivo iQOO 15 Ultra?
Vivo vivo iQOO 15 Ultra has the higher overall score (46 vs 31) and leads in Display, Battery, Performance. Choose Tecno Spark Slim instead if Weight matters more to you.
What are the main differences?
The main differences: Peak brightness (4500 nits vs 8000 nits) · Pixel density (440 ppi vs 508 ppi) · Battery capacity (5160 mAh vs 7400 mAh).
How are the scores calculated?
We normalize 25 public spec attributes within the category and weight them by group into a 0–100 score; missing values are inherited from spec-identical twins or imputed at the category median, so a sparse spec sheet never earns an advantage. The methodology is public.