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InnoReviews

OPPO A6x vs REDMI K90 Ultra

OPPO A6x
35.6Inno Score
VS
WINNER
REDMI K90 Ultra
69.1Inno Score
20Performance64.4
46.5Display78.7
20.5Camera43.4
70.9Battery83.2
20Features86.7
3 spec wins — OPPO A6x13 spec wins — REDMI K90 Ultra

InnoReviews verdict

REDMI K90 Ultra wins this phone face-off, 69.1 to 35.6, pulling ahead mainly in features (+67) and performance (+44). OPPO A6x still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the OPPO A6x

  • Has 3.5mm jack — the other doesn't

Reasons to pick the REDMI K90 Ultra

  • Stronger performance score: 64 vs 20
  • Stronger display score: 79 vs 47
  • Stronger camera score: 43 vs 21
  • Stronger battery score: 83 vs 71
  • Stronger features score: 87 vs 20

Display

Display comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
Screen size6.75 ″6.83 ″+1%
Panel typeIPS LCDAMOLED
Resolution1570x7201280x2772
Pixel density256 ppi447 ppi+75%
Refresh rate120 Hz165 Hz+38%
Peak brightness1,125 nits3,500 nits+211%
Screen-to-body90.6 %90.3 %

Performance

Performance comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
ChipsetSnapdragon 685Snapdragon 8 Elite
RAM (max)6 GB16 GB+167%
Storage options64GB / 128GB / 256GB256/512GB
Storage typeUFS 2.2UFS 4.1

Camera

Camera comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
Main camera13 MP50 MP+285%
Main aperturef/2.2f/1.7
Ultra-wide—8 MP
Max video1080p@30fps8K@30fps
Front camera5 MP20 MP+300%
OISNoYes

Battery

Battery comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
Capacity6,500 mAh8,550 mAh+32%
Wired charging—100 W

Design

Design comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
Weight210 g+7%227 g
Thickness8.6 mm8.2 mm+5%
IP ratingIP64IP68/IP69
Frame material—Aluminum

Connectivity

Connectivity comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
5GNoYes
Wi-FiWi-Fi 5Wi-Fi 7
Bluetooth5.05.4
NFCNoYes
USBUSB-C 2.0USB-C
eSIMNoNo

Software

Software comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
OS at launchAndroid 15 (ColorOS 15)Android 16 (HyperOS 3)

Audio

Audio comparison: OPPO A6x versus REDMI K90 Ultra
SpecOPPO A6xREDMI K90 Ultra
Stereo speakersNoYes
3.5mm jackYesNo

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