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InnoReviews

Redmi 15 vs REDMI K90 Ultra

Redmi 15

Xiaomi

Redmi 15
38.6Inno Score
VS
WINNER
REDMI K90 Ultra
69.1Inno Score
21.8Performance64.4
50.5Display78.7
29Camera43.4
66.7Battery83.2
28Features86.7
2 spec wins — Redmi 1511 spec wins — REDMI K90 Ultra

InnoReviews verdict

REDMI K90 Ultra wins this phone face-off, 69.1 to 38.6, pulling ahead mainly in features (+59) and performance (+43). Redmi 15 still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the Redmi 15

No decisive spec advantages — this side competes on price and preference.

Reasons to pick the REDMI K90 Ultra

  • Stronger performance score: 64 vs 22
  • Stronger display score: 79 vs 51
  • Stronger camera score: 43 vs 29
  • Stronger battery score: 83 vs 67
  • Stronger features score: 87 vs 28

Display

Display comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
Screen size6.9 ″+1%6.83 ″
Panel typeIPS LCDAMOLED
Resolution1080x23401280x2772
Pixel density374 ppi447 ppi+20%
Refresh rate144 Hz165 Hz+15%
Peak brightness850 nits3,500 nits+312%
Screen-to-body—90.3 %

Performance

Performance comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
ChipsetSnapdragon 685Snapdragon 8 Elite
Geekbench 6 (single)474Bottom 9%—
Geekbench 6 (multi)1,620Bottom 10%—
Wild Life Extreme stability99 %Top 39%—
RAM (max)8 GB16 GB+100%
Storage options128/256GB256/512GB
Storage typeUFS 2.2UFS 4.1

Camera

Camera comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
Main camera50 MP50 MP
Main aperturef/1.8f/1.7
Ultra-wide—8 MP
Max video1080p@30fps8K@30fps
Front camera8 MP20 MP+150%
OISNoYes

Battery

Battery comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
Capacity7,000 mAh8,550 mAh+22%
Wired charging33 W100 W+203%

Design

Design comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
Weight214 g+6%227 g
Thickness8.4 mm8.2 mm+2%
IP ratingIP64IP68/IP69
Frame materialPlasticAluminum

Connectivity

Connectivity comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
5GNoYes
Wi-FiWi-Fi 5Wi-Fi 7
Bluetooth5.05.4
NFCYesYes
USBUSB-C 2.0USB-C
eSIMNoNo

Software

Software comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
OS at launchAndroid 15 (HyperOS 2)Android 16 (HyperOS 3)
OS update pledge2 years—

Audio

Audio comparison: Redmi 15 versus REDMI K90 Ultra
SpecRedmi 15REDMI K90 Ultra
Stereo speakersNoYes
3.5mm jackNoNo

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