Brighteness issue, it sometimes goes down

JohnFruscianteJohnFrusciante Level 2
edited November 2020 in ROG Phone 3

Hi, I always stay with autobrighteness disabled and I usually use 100% brightness value.

I noticed a strange issue, sometimes the brighteness goes down and after some seconds it returns to its full 100%.

It even happen when my phone is cold and I would to know if anyone have same problem or if it is normal.

Pleaseell us some basic information before asking for help:

  1. Model Name: Rog 3 WW
  2. Firmware Version: 78
  3. Rooted or not:
  4. Frequency of Occurrence:
  5. APP Name & APP Version (If your issue relates to the app):

In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.



  • I had also observed this. It happened randomly which automatically sets the brightness to 0%.

  • Sometimes brighteness goes down but the value remain at 100%..similar to iPhone when it becomes hot and safety system turn it in darker brightness..but my Rog sometimes does it when cold

  • @Anders_ASUS is it normal or I have to contact assistance? I have disabled autobrighteness, I have disabled screen smart adaptive , battery is on balanced mode, with 100% brightness it turns down and up automatically but remaining on 100% value and it is not a safety system because temperature is very low. It is very annoying because it happens very often.. playing games, reading pages on internet etc...what can I do to fix it??

  • That sounds strange. What's your display sleep timer set to? It might also be that HBM kicks in, but I think we should log your device so our devs can take a closer look.

  • Thanks for your reply @Gustav_ASUS, yes it's very strange...the display sleep timer is set to one minute but I had same problem also set to 30 seconds..I tried to switch battery mode to "X mode" but problem still remain, brightness goes up and down the to log my device?

  • Ok thank you so much 🙏

  • Conclusion: This isn't a bug. You experienced High Brightness Mode which can be reached in direct sunlight.

  • Ok thanks for your help!!!

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