Out of nowhere, the red LED is always on, screen dimmed, don't know how to undo it

[rainbowtuba]

For whatever reason, last night, my phone started acting as if the battery was low but even at 100%. My screen is dimmed, the red LED is always on, and restarting doesn't seem to help. Anyone seen this, know what the heck I can do to fix it?

Other tidbits of information:

The red LED is only on when the screen is on. If the screen is shut down or another LED notification is shown, the red LED turns off for that brief time
Activating Stamina mode *further* decreases the brightness.
The unit is dim when first being powered on, through the boot screen, etc
It happened last night while charging my phone. It was quite hot for a little bit and then dimness

 

[Megacurco]

maybe trying a factory reset
do you install any app that dim the screen?

 

[rainbowtuba]

I did try to factory reset, but to no avail. As I mentioned, it's dim when it's first booting, so I don't think it's software.

 

[aidy.lucas]

I did try to factory reset, but to no avail. As I mentioned, it's dim when it's first booting, so I don't think it's software.

Next step is to do a software repair via Xperia companion if it's still the same after that it'll probably need to go to a Sony service center..

Sent from my Xperia XA using XDA Labs