Database Users

Doubling battery life using surfaceflinger

http://jsharkey.org/blog/2010/07/01/android-surfaceflinger-tricks-for-fun-and-profit/
Cool

If you didn't know how OLED works it might be cool.
But IMHO it is totally useless, why would I want to distort colors for some battery time?

I am sorry i really have the say the screen looks like your phone is going back to factory.
I do not want a AMOLED LED screen look like damaged nokia phone.
Anyway, still thanks for sharing

Maybe this app is useless but screen looks cool when you enable this and you can trick your friends that they broken your phone

The red filter could be useful at night, for preserving night vision as the author mentioned.

Ycros said:
The red filter could be useful at night, for preserving night vision as the author mentioned.
Click to expand...
Click to collapse
First I think some parts of the device won't be usable since graphics might not have any red in it.
Secondly, since when did anyone care about night vision combined with the use of a phone?
Maybe using it as a GPS, but most programs has a night mode anyways.

why all the negative comments.
android is all about options. if you forget your charger and need limited usage of the screen I could see where it would be useful.
Sent from my SHW-M110S using XDA App

What a great idea, hats off to him!

dseo80 said:
why all the negative comments.
android is all about options. if you forget your charger and need limited usage of the screen I could see where it would be useful.
Sent from my SHW-M110S using XDA App
Click to expand...
Click to collapse
Would it not be more useful to make everything dark instead?

Also, I would like to point out:
Even though some comments may be negative that is the whole thing about a discussion forum. People disagree and vent their opinions.
I look at the usability of what presented and thus venting my thougts on that, for instance this post and can see none.
I also already knew that red needs less electricity than blue OLEDs. That is true for LEDs as well I believe, or anything emitting light, since blue light carries more energy than red.

This could definitely be useful when you're desperate for battery but need to use your phone... ie you need to find a place and you're running out of battery.... It might not be revolucionary but it's nice to have the option to save some battery when you really need to...

@aeo087 - You are right. Could use this in case of emergency situation. Specially if u are away from charger or a usb port of pc and wants more juice from battery for like listening to FM or music.

I think this is excellent work.
At the very least it suggests using a simpler theme could have a big difference on battery life. I dont have a Galaxy S yet but when I do I will definitely be experimenting with this. Im hoping I could also use this OpenGL filter to have a low power mode, as suggested by dseo80, for use when you know your going to be away from a charger.

This would be awesome as low battery mode
Sent from my GT-I9000 using XDA App

thanks for sharing idea m8,,,yeah i agree wiv aboue frnds,,,it is really usefull when u need charging....and this site is all about tweaks,hacks...so yeah gud one.......cheeerz

can't find it in market

Somebody should make this a app
Sent from my GT-I9000 using XDA App

This would be very useful to astronomers, like myself, who would like to use their phones or tabs under the stars and not ruin their night vision.
It's one option that I would almost KILL to have. Someone please do this.

All the apps claiming that our battery backup will double are nothing but useless piece of crap.
Sent from my GT-I9000 using XDA App

[root] Chainfire3D free version got such feature. Its called Night Mode with customization of color

Galaxy S II Unresolved Bugs Thread

The purpose of this thread is to consolidate a list of all the bugs in the Galaxy S II which are yet to be fixed by Samsung.
At the outset, kudos to Samsung for not only bringing us this awesome phone but also showing its commitment to support it by bringing out frequent updates (3 in the last month itself)!!! Some bugs which are found in various forums and threads are yet to be fixed.
So I thought to start this thread so that (maybe & hopefully) someone from Samsung support can look into this and address these in the next update(s)...
So here are some that I know of...please add yours (I will try update the first post with all), and also post if any of these are resolved so that I can delete them from the first post.
Definition of bug (for purpose of this thread) - is a bug which is widely acknowledged and reported as occurring in the stock firmware - and does not includ bugs experienced by only some users (which could be due to specific apps installed by such users).
These bugs exist as of update KWE7...
1. Android OS using up battery - still shows to use as much as 20% of battery
2. Third party keyboards (such as Swiftkey, Gingerbread KB, Smartkeyboard) - text prediction does not work in default email app - compose mode (probably because the field is defined incorrectly in the firmware).
3. Slight lag in waking up from lock screen.

Random restarts. Used my tracks to track a six hour walk this morning only to find the phone had restarted just before we got back to the car. This resulted in all the data being lost. Not impressed!
Sent from my GT-I9100 using XDA App

Folders not updating as shortcuts on homescreen

Regarding random restarts I haven't had a single one in over two weeks of constant use. Perhaps it's caused by an installed app rather than anything provided by Samsung?
As for my gripe, the classic wifi signal strength would be the main one although it doesn't really effect my use of wifi so it's no massive deal. Another issue would be how hot this thing can get but short of underclocking the CPU I can't see how that could be properly resolved.
Sent from my GT-I9100 using XDA App

Banding on gradients UNACCEPTABLE.
GPS not accurate compared to other phones (might not be fixable with software).

Text editing in browser with landscape mode

Dannyboyni said:
GPS not accurate compared to other phones (might not be fixable with software).
Click to expand...
Click to collapse
where did that come from?
i read a lot of users/critics impressions and the gps seemed fine

Define a bug.
A few users have or all users have the problem.
jje
Sent from my GT-I9100 using XDA Premium App

Dannyboyni said:
Banding on gradients UNACCEPTABLE.
Click to expand...
Click to collapse
I also agree, how come the banding is so obvious on this. The screen is great, a very nice upgrade to the previous amoled. It would be nice to really see no banding on a screen this caliber...I know it can be fixed with a software update, but still. Bad samsung, baaad!
And one bug that would be nice to fix is the wake up lag of the lockscreen. Mine takes 1-2 seconds depending on the situation. Tends to get a bit annoying.

I thought the banding was due to the depth currently being 16bit. Quite why Samsung released the phone with this colour depth is another thing but if it's true either Samsung themselves or a custom rom will change that eventually.

bbqnelli said:
where did that come from?
i read a lot of users/critics impressions and the gps seemed fine
Click to expand...
Click to collapse
My GPS works just fine...
Sent from my GT-I9100 using XDA Premium App

Incredibly hard to put cursor in specific spot in browser

gvoima said:
and one bug that would be nice to fix is the wake up lag of the lockscreen. Mine takes 1-2 seconds depending on the situation. Tends to get a bit annoying.
Click to expand...
Click to collapse
+1 .

Dannyboyni said:
GPS not accurate compared to other phones (might not be fixable with software).
Click to expand...
Click to collapse
I am finding that in Berlin or on the O2 network, my SGS2 is quite slow at pinpointing my position. My old iPhone 3G was about the same speed and did a better job at finding where I am.

anshkhanna said:
These bugs exist as of update KWE7...
2. Third party keyboards (such as Swiftkey, Gingerbread KB, Smartkeyboard) - text prediction does not work in default email app - compose mode (probably because the field is defined incorrectly in the firmware).
Click to expand...
Click to collapse
I am on KWE2 (battery usage is 80% for Android OS) and I rely on third party keyboards as I require Catalan. I haven't found one yet that really works well.

Pagnell said:
I thought the banding was due to the depth currently being 16bit. Quite why Samsung released the phone with this colour depth is another thing but if it's true either Samsung themselves or a custom rom will change that eventually.
Click to expand...
Click to collapse
Yeah it's not a display issue, more of a software issue which I'm sure supercurio will work his magic on.
Not had any of the bugs the OP had put forward, still working through battery life and the colour banding is annoying but apart from that this phone has been awesome, never had a random reboot either.
Sent from my GT-I9100 using XDA Premium App

One unresolved issue is that Samsung doesn't provide an update method other then using Windows. I haven't got Windows nor will I have a Windows machine. I know I am not the only one either.

Did a quick search and couldn't find this...
If I create a calendar appointment on my phone, and set a reminder, it doesn't appear until I clear the ram from within task manager!
Weird eh!

urbanomad said:
One unresolved issue is that Samsung doesn't provide an update method other then using Windows. I haven't got Windows nor will I have a Windows machine. I know I am not the only one either.
Click to expand...
Click to collapse
What he said. I'm using ubuntu.
Sent from my GT-I9100 using XDA App

The stock calculator % button doesn't work properly...I need that :-(

SNote sucks

First the brightness issue,
Now that I actually tried to use it for a extended period, I'm finding my palm always hits the edge and moves the scrollbars
I had a tablet pc many years ago that provides a much better note taking experience

Cool Story Bro

Mine is awesome.
Sent from my GT-I9300 using Tapatalk 2

dtziheucdavis said:
I'm finding my palm always hits the edge and moves the scrollbars
Click to expand...
Click to collapse
Poor Samsung. First, everyone *****ed about the panning box they used to allow you to move through a note you're working on. Then, they changed it and replaced it with a scroll bar and people are *****ing about that too. I don't know which version of S-Note you're on but in the version included in JB with "only recognize the S-Pen" enabled it's really really hard to inadvertantly hit the scroll bars so maybe that'll solve your problem. As for the brightness being ramped up in S-Note I get the logic and it shows how much they think about how people use their devices and apps. If you think about, since the Note's a drawing device, people could be using it at any angle and in any position. Disabling auto-brightness kind of makes sense so that the screen doesn't fade in and out if someone's hand is over the ambient light sensor. Oh well, you can't please all the people all the time.

"version included in JB"
Jelly Bean? I thought the US Note 10.1 were still in ICS

dtziheucdavis said:
"version included in JB"
Jelly Bean? I thought the US Note 10.1 were still in ICS
Click to expand...
Click to collapse
Doesn't mean that you can't flash another rom...

I don't use autobrightness so it changing the levels drives me absolutely nuts. E.g. I'm working in a dark room so have the level turned down to what suits me best. I open snoteb and up it goes. I turn it back down manually, jump to another app for a moment for whatever reason, say to read some info in a pdf, switch back to snote and, bam, blinded again.
There's a reason why autobrightness can be toggled on and off, and one app ignoring that convention is infuriating.

actually if you use autobrightness, the brightness levels still change

"Disabling auto-brightness kind of makes sense so that the screen doesn't fade in and out if someone's hand is over the ambient light sensor. Oh well, you can't please all the people all the time."
If this is the case, then there are definitely better solutions than the one Samsung implemented. For example, putting a timer on the ambient light sensor so it doesn't react to accidentally being covered up. If it's only briefly covered up, the brightness won't change. If it's really in a dark room and sensing low light with no interruption for say 1 minute, then change the brightness.
So, it's hard to believe that Samsung would make SNote change the brightness autmoatically as a "feature". Samsung makes great products, but we dont have to idolize them the way that iOS Sheep idolize Apple.

dtziheucdavis said:
So, it's hard to believe that Samsung would make SNote change the brightness autmoatically as a "feature".
Click to expand...
Click to collapse
OK, since we know it wasn't done accidentally, care to take a more reasoned guess as to why they did it?
Samsung makes great products, but we dont have to idolize them the way that iOS Sheep idolize Apple.
Click to expand...
Click to collapse
If you're referring to me I chose the Teg3 One X over the SGS3 and am very happy with my choice. Here's a demonstration of my lack of idolization. In JB, putting the multiview selector to the right of the more important and more often used "settings" selector wasn't very well thought out from a usability perspective.
S-Note turning up the brightness works fine for me and I kind of like it since auto-brightness tends to be on the dim side normally. I'd probably like it less if I frequently took notes in a dark room which I don't. I don't assume everyone uses their device like I do so I certainly wouldn't invoke my opinion of a feature on others.

This is why I use lecture notes.

There is no brightness ISSUE.
They increase brightness on purpose to make drawing more precise.
You can never satisfy everyone....

Can someone share the apk of the first version with no bars?
Sent from my GT-N8000 using xda app-developers app

bsilvino said:
Can someone share the apk of the first version with no bars?
Click to expand...
Click to collapse
You can't upgrade or downgrade S-Note with just the single APK. There are supporting files that have to be changed along with it. When PDF import was borked on some versions of S-Note folks tried to update it with a newer version of the APK alone and it failed.

Actualy, I did the backup with titaniun but when I tried to restore now I am getting FC. Any idea how can I fix it then?
Sent from my GT-N8000 using xda app-developers app

legion1911 said:
There is no brightness ISSUE.
They increase brightness on purpose to make drawing more precise.
You can never satisfy everyone....
Click to expand...
Click to collapse
Yes they can, they can let us make up our own mind as to what level of brightness we want, the same as we do with every other app. Why bother having a brightness setting at all if that's the case, just get rid of it entirely as they know better.

Galaxy s4 screen throttling

Anyone notice throttling on the screen in terms of contrast tone and brightness. You cannot turn it off no matter what settings you choose. One good example is when you pull up the keyboard and the brightness is fairly low, there's a huge color shift that pops up till the keyboard tray is gone again. Could a kernel fix this?
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

i am trying to get some help from international model guys on this; mine DOES NOT change contrast and brightness if i disable every auto feature AND ALL POWER SAVING features. I have seen this on another GS4 and not on my own or my GF's with everything disabled. I wonder if there is a difference in screens or part batches and sensitivity or a different controller chip; another thing im looking into.
also the ambient light sensor; try covering it completely. i think that and the 'auto detect/modify screen contrast/colors' is running no matter what on certain GS4's.

Slade8525 said:
i am trying to get some help from international model guys on this; mine DOES NOT change contrast and brightness if i disable every auto feature AND ALL POWER SAVING features. I have seen this on another GS4 and not on my own or my GF's with everything disabled. I wonder if there is a difference in screens or part batches and sensitivity or a different controller chip; another thing im looking into.
also the ambient light sensor; try covering it completely. i think that and the 'auto detect/modify screen contrast/colors' is running no matter what on certain GS4's.
Click to expand...
Click to collapse
Yeah I've tried it all seems like its at the kernel level. I've had 3 galaxy s4s and they've all done it...
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

This happened to me on gs3 when I opened internet browser on stock ROM. I just flashed CyanogenMod no more screen throttiling
Sent from my SGH-T959V using xda app-developers app

I'm sure someone will make a kernel that fixes these weird quirks that only I seem to notice lol
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

i have calibrated many monitors before; maybe when the bootloader is unlocked and there is a full ROM dump someone could assist me to find the screen calibration adjustments so i can create a professional AdobeRGB and sRGB profile for the screen as well as rec 709 full and 16-235 video modes etc. I am not the only one interested in this; the Galaxy S III, Note II, and Google Nexus 7 are all excellent candidates for field monitors with excellent gamut. I just want mine to display colors as accurately as is possible for the moment; i keep all my demo reel footage and music videos i shot on it; a proper 'flat' image is important before editing, and my company we shoot raw, yet even a simple 8 bit example of before/after editing in raw environment would help our clients.
This is the first mobile full HD screen capable of such broadcast range of gamut; would be incredible to use as proper field monitor with correct calibrations.

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I think you should set its original setting then your issue may remove

Just got my First Note device! need some tips!

Hello guys i just bought myself a brand new Note 4 (N910F) from Germany model.
Its my First Note device, my last device was the s3 i9300 but my motherboard fried up so i decided to move on
Can you give me some cool tips to improve my Note expirience?
For example the best apps to use the S pen with?
Best app for taking notes? Or something useful for university?
Tips what to turn off or on?
Tips to save battery life?
Thanks in advance
Sent from my SM-N910F using XDA Free mobile app

patriotaki said:
Hello guys i just bought myself a brand new Note 4 (N910F) from Germany model.
Its my First Note device, my last device was the s3 i9300 but my motherboard fried up so i decided to move on
Can you give me some cool tips to improve my Note expirience?
For example the best apps to use the S pen with?
Best app for taking notes? Or something useful for university?
The best note app for me is S Note, and if you want to draw then download sketchbook for galaxy from Samsung Apps it's free for the note 4
Tips what to turn off or on?
Go through the settings, read what each setting does and set up your device as you see fit
Tips to save battery life?
Battery is really good on the note 4 so I don't think you should have a problem with it.Mine lasts a day with moderate to heavy use.
Thanks in advance
Sent from my SM-N910F using XDA Free mobile app
Click to expand...
Click to collapse
Enjoy your phone.

Hi,
go to settings wifi advanced uncheck "allow always search", now go to check, not to uncheck, personalization accesibility interaction wake up by air and try my script calculator app.
Enjoy your macchina!

Thanks! Yea the battery life is pretty sweet but i wonder if i greenify some google apps and facebook will i see a big difference?
Any other cool tips/tricks to do with this phone? - or some cool apps? -
Are there any apps designed for the note series?
Sent from my SM-N910F using XDA Free mobile app

patriotaki said:
Thanks! Yea the battery life is pretty sweet but i wonder if i greenify some google apps and facebook will i see a big difference?
Any other cool tips/tricks to do with this phone? - or some cool apps? -
Are there any apps designed for the note series?
Sent from my SM-N910F using XDA Free mobile app
Click to expand...
Click to collapse
Hi,
I dismissed greenify because this is the first smartphone that give me enough autonomy till the end of the day. If I need more autonmy with the two options that Samsung pro ide natively, power saving and ultra power saving its enough for me. I see other mates who also unistall it after using it because the difference is residual almost goes worst using it. That's what they say.
Facebook will drain your battery.
Greetings.

norimiko said:
Hi,
I dismissed greenify because this is the first smartphone that give me enough autonomy till the end of the day. If I need more autonmy with the two options that Samsung pro ide natively, power saving and ultra power saving its enough for me. I see other mates who also unistall it after using it because the difference is residual almost goes worst using it. That's what they say.
Facebook will drain your battery.
Greetings.
Click to expand...
Click to collapse
Yeah i unistalled facebook..but using facebook through browser is awful..any alternative apps?
And some other tips/tricks i can do with this phone?
Sent from my SM-N910F using XDA Free mobile app

patriotaki said:
Yeah i unistalled facebook..but using facebook through browser is awful..any alternative apps?
And some other tips/tricks i can do with this phone?
Sent from my SM-N910F using XDA Free mobile app
Click to expand...
Click to collapse
Hi,
It is a hidden menu found on Samsung Galaxy smartphones and it can be used for checking whether the device is in good working order.
So by now you're probably wondering how to access this secret menu. Well, you do that by opening the Phone app and entering the code *#0*# as if you were to dial it. The said menu will appear as soon as you input the last symbol.
Most of the options listed in this secret menu aren't particularly interesting. For example, Red, Green, Blue, and Black let you check the screen's output for flaws, such as stuck pixels or color irregularities. But hit Sensor and you'll be taken to a cool-looking screen where raw data from your phone's sensors is displayed. Also, there are graphs visualizing readings from your accelerometer, gyroscope, and compass. Oddly, if you hit Image Test you'll be shown a picture of a chihuahua. This means there's a photo of someone's pet dog hidden in millions of Galaxy smartphones, as silly as it may seem.
The Touch test can be useful if you have doubts about your touchscreen's accuracy. Each rectangle where a tap is detected is highlighted, and your finger's trace is represented by a black line. There's also the Sub key test for checking whether the phone's capacitive keys are in order. The Receiver test checks the earpiece for malfunctions, and the Speaker test blasts a mysterious pop song through the loudspeaker.
So that is Samsung's hidden test menu found on Galaxy handsets. If you're feeling adventurous, feel free to check it out or to search for other secret codes at your own risk.
This information was published on phonearena website.
Greetings.