Keyboard backlight always on by default on Swift 3 SF314-43 and SF314-512

You did not understand the issue. The issue is not that the keyboard does have backlight but the fact that you can't disable it (and the on/off status is preserved after reboot), that each time you boot a laptop the keyboard backlit is on, even if you disabled it in the last boot by pressing Fn + F11 shortcut. You don't need any keyboard illumination in a room with enough light and the keyboard backlit makes very difficult to read that keyboard during the daytime. The ACER should fix this, either by introducing relevant BIOS functionality so that the backlight can be set to disabled at boot, or by remembering the last Fn + F11 backlight status (after boot).

Your answer does not address the problem. This is not question of having backlight keyboard or not. It is a very useful and nice-to-have feature and most of the users will be happy to have it, but the problem is that ACER Swift 3 SF314-43 and SF314-512 models do not store last keyboard backlight setting and that by default the keyboard lights are auto on once the laptop starts up.

Keyboard illumination is useful in dark rooms but in most of the situations users do not need keyboard lights to be on when typing, and with the silver keyboard and lights on it is difficult to read keyboard keys in light room due to the low contrast between letters and silver colour of keys.

Acer did not implement on/off button functionality correctly in these laptop models and users need to press Fn + F11 shortcut to switch off keyboard light each time they start up these laptop models. This is very annoying and many users were already complaining about it.

Others manufacturers allow users to chose between keyboard lights on or off by default at boot - either by BIOS settings or by software config. Therefore this needs to be fixed by ACER. It is not really that difficult to introduce either BIOS setting that will control this or Acer Care Center or by making sure that the last Fn + F11 status will be remembered during next boot.

For now until the ACER will fix the problem it's better to choose a laptops of other manufacturer that comes backlit keyboard and where it can be turned on when it is useful (at night in rooms with not enough light) as opposed to being on by default where it's not useful and causing readability problems in most of the situations.

I'm hoping ACER tech team will see this post and fix this issue.

ACER should monitor these forums, especially that they make almost impossible to contact them directly in order to bring this kind of design flaws/functionality problems to their attention