First Look at F.Lux for Android

F.Lux for Android brings the same day and night shifting of colors from the desktop to rooted Android devices.
One of my must have Windows programs is F.Lux which makes the colors of the screen adapt to the time of day. The main idea behind the feature is to make the screen more pleasing to the eye at night and to improve sleep for those of us who work on the computer late at night.
The Android version of F.Lux offers similar functionality but is limited to Android 5.x devices or newer devices for the most part and requires root on top of that.
Some Android 4.x devices may work according to the author provided that they are rooted, but since there is no supported device list available, it comes down to trial and error to find out if your device is supported.
F.Lux for Android
If your Android device supports F.Lux you will notice that it works in pretty much the same way as the desktop version.
It detects your location automatically and will change the color of the screen based on the time of day. There is no option to set a location manually on the other hand which means that you need to allow F.Lux to use the device's location feature to detect it automatically.
You can modify the behavior somewhat but not as detailed as in the desktop versions of the program.
Basically, it allows you to set lighting preferences for daytime, sunset and bedtime. You only get options to switch between four or five lighting preferences in that regard unlike on the desktop, where you can set the values in 100K steps.
Other options provided in the settings include setting a wake up time, enabling darkroom mode which changes the screen to red text on a black background for late at night uses, and to disable F.Lux for the time being.
The author of the app notes that some applications interfere with F.Lux while it is running. This is for instance the case for Netflix and his assumption is that this is done to accommodate DRM applications. A fix for the issue is in the works however.
Another thing that F.Lux users need to be aware of is that they should disable F.Lux before removing the application from the device. Failing to do so requires a reboot of the device to go back to the regular color use on the device.
Closing Words
F.Lux for Android is a useful application for users who use their device at night or in the darkness. The apps' reliance on root makes it less easy to set up than on the desktop though.
Twilight is another Android app that offers a similar functionality but does not require root.






Thanks for the tip Martin.
It is for these kinds of posts that I follow GHacks.
What’s up with the generic comment, are you a bot?
2G?
Where on the planet is that still in use? I was forced to give up using my RAZRV3 years ago because 2G was phased out by AT&T.
Everywhere 3G has been turned off and you don’t have LTE coverage, and believe me there are many developed countries where this is the case and if it weren’t for 2G you wouldn’t even be able to make a phone call.
Maybe I missed it, but I don’t believe tha term “2G” is in the article. Perhaps you are referring to “AGM G2”??
@Martin
Your website has gone insane.
When I the post button I then saw my comment posted on a different article page. When I opened this article again, it is here.
@Tachy @Martin Brinkmann
” Your website has gone insane. ”
Same here. Has happened several times.
@Tachy,
@Martin P.,
For over two weeks now,
I’ve been seeing “Comments” posted by subscribers appearing in different, unrelated articles.
https://www.ghacks.net/windows-11-update-stuck-fixed-for-good/#comment-4572991
https://www.ghacks.net/windows-11-update-stuck-fixed-for-good/#comment-4572951
For the time being,
it would be better to specify the “article name and URL” at the beginning of the post.
@tachy a lot of non-phone devices with a sim in them rely on 2G, at least here in europe.
Usually things reporting usage or errors/alarms on something remote that does not get day to day inspection in person. They are out there in vast numbers doing important work. Reliable, good range. The low datarate is no problem at all in those cases.
3G is gone or on its last legs everywhere, but this stuff still has too much use to cancel.
Anyhow, interesting that they would put that in. I can see the point if you suspect a hostile 2G environment (amateur eavesdroppers with laptop, ranging up to professional grade MITM fake towers while “strangely” not getting the stronger crypto voip 4G because it is being jammed, and back down to something as old ‘stingray’ devices fallen into the wrong hands).
But does this also mean that they have handled and rolled out a fix for that nasty 4G ‘pwn by broadcast’ problem you reported earlier this year? I had 4G disabled due to that, on the off chance that some of the local criminals would buy some cheap chinese gear, download a working exploit and probe every phone in range all over town in the hope of getting into phones of the police.
>”While most may never be attacked in stingrays, it is still recommended to disable 2G cellular connections, especially since it does not have any downsides.”
The downside would be losing connectivity. I spend a lot of time way out in the countryside where there’s often no service or almost none. My network allows 2G, and I need it sometimes. I have an option on the phone to disable 2G, I may do that when I’m in the city and I have good 5G connectivity, but not out in the country.
I would imagine that the stingray exploits, like most of the bad things in this world, are probably things you will run into in the crowded big cities.
I stopped using it in a mobile (Wi-Fi line) environment, so I’m almost ignorant of the actual situation,
But the recent reality in Japan makes me realize that “the infrastructure of the web is nothing more than a papier-mâché fiction”.
https://www.ghacks.net/2023/08/17/google-chrome-to-enable-https-first-by-default-for-all-users/#comment-4572402
It is already beyond the scope of what an individual can do.
What we should be aware of is the reality that “governments and those in power want to control the world through the Web”, and efforts to counter (resist and prevent) such ambitions are necessary.
Why do you want people to disable the privacy features? Hmmmmm?
Now You: do you plan to keep the Ads privacy features enabled?
I’d like to tell you, but apparently if you make a post critical of Google, you get censored. * [Editor: removed, just try to bring your opinion across without attacking anyone]
@Martin
You website is still psychotic. Comments attach to random stories.
@Martin please do fix the comments, it’s completely insane commenting here! :[
@Martin
The comments are seriously messed up on gHacks now. These comments are mixed with the article at the below URL.
https://www.ghacks.net/2023/08/18/android-how-to-disable-2g-cellular-connections-to-improve-security/
And comments on other articles are from as far back as 2010.
What does this article has anything to do with all the comments on this article? LOL I think this Websuite is ran by ChatGPT. every article is messed up. Some older comments from 2015 shown up in recant articles, LOL
The picture captioned “Clearing the Android Auto’s cache might resolve the issue” is from Apple Carplay ;)
How about other things that matter:
Drop survival?
Screen toughness?
Degree of water and dust protection?