Database Info

[Q] Android Developers, why are you treating my SD card like a garbage can?

This has been bothering me for quite a while, so I conjured a little story to help sooth my frustration.
Lets say my Android device is the new tenant of a nicely formated loft, this loft being 16gb of square space. To commemorate this new exciting space my device throws a house party. Most of the Apps he invites are pretty well behaved, but some start spilling drinks, then puking on the carpet, then having an orgy, then bukkake-ing the root directory. After discovering such acts, the device politely requests the disruptive guests force quit and leave. "I need more space on my phone." the device replied as each questioned on their way out. To his disbelief, NONE of the Apps cleaned up their mess! Even worse it seems some of the classier Apps, though more organized seem to have been influenced too. Unfortunately the device is forced to live with it, as the police force stopped responding to calls in his neighborhood. One man tries, but it always returns to a mess.
I hope that entertained someone.

i know exactly how you feel... there is at least 7 unused folders just wasting space on my phone. not to mention random mp3's hidden deep within my phone...

PhxkinMassacre said:
i know exactly how you feel... there is at least 7 unused folders just wasting space on my phone. not to mention random mp3's hidden deep within my phone...
Click to expand...
Click to collapse
I hope you understand about the unused folders and NOT the bukkake-ing!!

hello, nice story!
I won't say that I am even close to being a developer but I do develop some apps and the thing that I wan't to point out is that apps do not run when they are installed or uninstalled. It's not each application job to clear up the mess it may have created but package manager's which apparently leaves some files be just in case you would like to reinstall the app later(?)...
I would propose to look for a more efficient package manager or doorman/janitor for your loft

That's why I don't invite the guy whos only existence is to make farting noises!

Very good point. However, one thing I don't know is if uninstalling through the market cleans up the SD card better than using a third party mass uninstall app. Something you may want to experiment with.

Back at it again...
Here I am again, and I still don't flippin get it!
After reading some of your comments I realized my main point kind of got glazed over(no pun intended @Scudderb)
My big issue is that there's no hierarchy in place for this crap. In windows, program files are stored in the 'Program Files' directory. In Android (and I credit google and the developers for this sloppy BS) Apps are just throwing all their **** in with my stuff on the ROOT.
How is this acceptable. Seriously, HOW? And if its all cache files and/or temporary documents than WHY THE **** ISN'T ALL THIS CRAP BEING PUT INTO A TEMP/CACHE FOLDER.
I'm PISSED! Why does every app I install get to put their own folder on the ROOT WITH the FOLDERS and FILES that actually matter to me ex: like my music, pictures, movies, documents (OH and by the way, a lot of apps developers do a REALLY ****ty job with their NAMING CONVENTIONS so the folders being created may or may not even look related to the app that put it there!)
::end rant::
My apologies for the colorful language, folder structure and hierarchy are something I design as a web designer so when I see this crap going on in my phone like the inmates are running the asylum... I get angry.
Today I was cleaning up my SD card for the umteen'th time, and found that Foursquare was dumping its temp files directly onto the root of my directory. I blew my top and had to get it out of my system... so..
A MESSAGE TO ALL THE APPS PULLING THESE SHENANIGANS: GROW UP!

The problem here is that it's hard to do it right
For custom data, files are supposed to be saved into "/data/data/com.appname/blah" (that's from the top of my head, could differ slightly). That's the directory to use for data files, but there's one big issue with it: it's on the internal memory storage. We all know that internal memory on Android (without custom ROMs) is.. limited. That's probably why most devs are using SD for larger files.
There's also the "Android/data/com.package_name.blah/blah" directory on the SD card. This directory should be used by apps to store files into and is automatically deleted when the user removes the associated app (but only when you're running Froyo or greater).
The issue with this approach is that users (and developers too, when testing the app) will lose all their data when removing an old version of a specific app. Let's say there's a bug with the Market again and the app suddenly gets uninstalled. User will have to reinstall, result: data will be all gone. That's only one of the many doom scenarios.
I can't speak for other developers, but that's more or less the reason why I started to use a common directory outside of the preferred ones when I was doing apps. It's not a great situation, I fully agree. But would you rather have your data accidentally deleted?
If anyone knows a good way to get around this issue, I'd love to know more about it...

orly
Thanks for the reply @Stripeymilk
I can think of multiple solutions:
#1 Development community adopts a universal directory for files deemed 'User' or 'Save' data that should be stored for future use. (or Google creates this for developers)
#2 Development community adopts the practice of allowing users to pick the directory users want to store an apps data in. (prompt at app's first start)
#3 Store files/data in the cloud.
#4 Users dump trash in the lobbys/living-rooms of developer's and see how quickly they find a solution.
#5 USE THE "Android/data/com.package_name.blah/" FOLDER WHEN ALL YOU'RE REALLY DOING IS STORING CACHE/TEMP FILES!!!
BOTTOM LINE: Its not hard to do it right, Its just hard to get people to do it.

You make it sound so easy
1) I'm all for it, but Google needs to put its weight behind an approach like that because otherwise people will say "I like /Data better than /data or /Mydata or /MyData". It's a bit like coding conventions: everyone wants to be different.
2) Good for techy people, not so good for "normal" users. Could make it easier with a small "file manager", but that's too much work for indie devs. Could be a nice idea for a new open source project though.
3) Great idea, could actually work if the associated account would be created automatically (like in Cut the Rope for Android with Scoreloop), but:
- The backup functionality in Android for storing data in the cloud is available for API level 8 and greater, making it of not so much use when you're targeting API level 5 or 6 and greater. Could be fixed by using something like Google Storage combined with Jets3t instead, but that would be useless for apps written in C++, like many games are.
- Cloud storage isn't free. Developers can't pay for that as it would be too expensive. If every Android user would've gotten free cloud storage from Google it could be a nice alternative, but (yeah, there's always a but) most current users don't have that.
4) If you're prepared to send your trash by plane to another country, go for it!
5) Agreed. Useful for temp data.

I'm not trying to make it sound easy, believe me I know how it isn't. I'm trying to make it sound simple, because really.. it is...
In response:
1) I agree and this is exactly what I mean by the real hard part is getting people to do it. This requires widespread endorsement by developers big and small - that this is a 'best practice' that should be adhered to. I think the gate swings both ways though.
example: Twitter didn't invent hash tags, their users did, and with its widespread adoption, Twitter adopted/implemented it too.
2) Another good point, though this process can be curated to drive the user in the right direction (holding their hand). The XBOX 360 does this for every game you play, the first thing it does is ask you which storage device you want to use for game saves.
example: in combination with solution # 1, the default folder the app saves to could be '/data/theAppsName' and the prompt could say "This app saves files to your SD CARD in '/data/theAppName'. Would you like to choose a new location?" [Yes] [No] [?]. The [Yes] option brings up a simple file manager, the [No] option uses that location, the [?] option brings up an easy to understand write up on what its asking and why its asking it.
3) We'll get there eventually, my point really was if you've got the resources, why not. Its a solution better than #1 and #2
4) I plan on sending human clones to create trash individually and exponentially
5) AMIRITE~!
In all seriousness though, thank you @Stripeymilk for taking the time to go in depth and have a conversation about this. I seriously think it doesn't take an act of Godogle to solve this (to what I beleive) is a big issue!

I can't agree more with you.
As developer (Windows, iSeries) I try to make my programs as structured and readable as possible. The same goes for the files and folders used used by the programs, but sadly, even with all the available resources, some people (colleagues) make a complete mess of it, cause "that's not/less important", as long as the program does what it's intended to do ...
It's all about the resources and people using them the right way!

Cool, didn't know about the hash tags on Twitter
Well, we're on a great site here with developers on it. If everyone here would adhere to the same standard, it could at least be a nice push to make the Android SD card world a better place.
What's the directory we're going to settle on? Any pros and cons?

(Guide) A complete maintenance guide to pretty much any android phone

INTRODUCTION
This is a guide made ​​to with help from Xperia X10 users and developers for Xperia X10 users enjoyment but most of the tips contained here are suitable for any phone running Android. The tips contained here focus on WHAT to do to improve the performance of your phone and not HOW to do it, after all, once you know what must be done is to find simple tutorials on how to take these actions.
For some of the tips contained in this guide I assumed that you have just installed a new ROM or formatted / bought your phone recently and have root access but even without these prerequisites this guide can still be useful to most users.
It’s important to say that although most of the tips some are quite basic, some require a little more work and deal with the more delicate parts of your phone, they should be made ​​at your own risk. These more advanced tips often use very specific terminology which you can find more about on XDA Developers or even Google.
Finally I would like to remind that even machines that are made ​​within a few standards can operate in different ways: some phones take better advantage of certain adjustments and settings and not others so it’s impossible to guarantee one hundred percent efficiency for all of you but still I that you make good use of this guide.
Sincerely,
Guilherme "XOT" Oliveira
- Install a good ROM and a good Kernel
Official ROMs are good but custom ROMs are usually faster and in many cases as stable as official ROMs. This is because ROMs are released and thereafter rarely change, custom ROMs are already made by developers who are constantly improving their job to get the most out of your phone. It's very important to research before installing a new ROM, searching always for the one that meets your expectations and relates well with your device since the same ROM can work very well on my x10 but not as well on x10 my brother’s for example.
The same goes for Kernels, but with Kernels take extra care to make sure that the Kernel is compatible with your desired ROM and your phone.
- Keep clean your caches
Caches are good to keep certain information and have access to these faster but with these files and information some "garbage" is stored .
The solutions to this can be pretty basic or advanced, the most basic way is to enter your Application Manager (Settings> Applications> Manage Applications) and clear the cache for each application. It is important to clear the cache only and not application data as these may be important such as the files that resemble your progress in a game. Already the most advanced solution is to clear the Dalvik Cache and Cache Partition through your recovery.
Both solutions don’t need to be made ​​with daily frequency, for example I usually clean my caches every 45 days or when I feel that the phone is getting slow.
- Make a full, but clean, backup
Full backups (full system backup) like those made ​​by recovery or nandroid are great to store complete setups but when they are done with “dirty” files in the the phone’s memory restoring these files may worsen rather than help the situation of your device .
Ideally, do a full backup after completely configure your phone (configure your account, set your homescreens, install the required applications, etc.) but before using it for real.
That way if your phone starts getting slow and nothing works to reverse the situation you can easily go back to your “original” settings without the hassle of customizing everything in its way again.
- Do not touch the CPU / GPU the first day
Like people, phones also take a while to adapt to a new environment, or in our case new ROMs, so during the first 24 hours of use is important to use the settings of CPU and GPU that came with the ROM, no overclock, undervolt and things like that.
Another important step in the process of adaptation to the new ROM is really using and exploring the device in this very first day so it "get used" to the change. Do not mind the battery consumption, that should stabilize after a few days.
It’s also iimportant to remember that some ROMs already comes with overclock, undervolt and improvements in battery usage. In this case there is no problem in using these settings from the first minute because if they are there since the installation of the ROM, it is because they are part of the default settings already programmed and develop on this particular ROM and it will work better this way.
- Use the maximum your battery
Batteries seem to last less and less as time goes on, in part this is because your battery is uncalibrated and there are ways to fix it.
I will not talk much on this subject because it is very easy to find guides that teach you how to calibrate your battery so I’ll just recommend that you take a look at them.
- Applications: less is more
Having millions of apps is the glory and the doom of smartphones, the glory because you can do everything on your device and doom because of the following reasons:
As a computer your phone also slows down the as it becomes full and in most cases you can blame it on the number of apps that you have installed on it. So try to leave installed only the applications you actually use and uninstall the ones that you no longer use so you can have more free memory and consequently a faster device.
Some applications can not be uninstalled because they are system applications; in order to remove those apps you are going to need uninstallers that have root access (ex: RootUninstaller) which are capable of removing these applications but before taking such a measure is necessary to look for a safelist (a list of applications that can be removed without causing system problems).
Keeping a low number of applications but doing so by installing and uninstalling new apps every day also usually let the machine slower so if you find an application for a specific function that fits your needs you should stay with it instead of testing another 10 before returning to it.
PS: A good way to avoid testing several applications before finding the right one is reading reviews and comments before making your choice.
- Repair defective applications
Often the phone is working fine but a certain application or function is not, which can cause slowdowns and FCs (force close); depending on the situation there is not much to do but some of these solutions may take care of the problem:
The first thing to do is to uninstall and reinstall the apps via Play Store to make sure that the problem was not caused by a corrupted file when you downloaded the application, if the problem persists there are some more advanced alternatives: in the advanced settings of your recovery select fix permissions, this function should make sure that every application has the necessary permissions to work properly.
- Keep some free space
Full memory is often a problem on any device, especially in older phones like ours, after all the more files the longer it takes read all these files if it is necessary, so the tip is this: the more free space the better.
This step seems a little redundant since we already talked about having the smallest possible number of applications but this time we are also talking about other files. Anything occupying space on your phone is "bad"; too many photos, songs, text documents, etc.. can make the phone slower and lets be honest, you do not need to carry 150 photos of your last weekend with you all the time.
A solution to this problem is simple, try to keep the memory of your phone as free as possible by eliminating caches, unused files and moving applications to the SD card (Settings> Applications> Manage Applications> choose the application and select Move to SD card or use apps like Link2SD); your SD card should also be kept clean by eliminating unused files and traces left by already uninstalled applications, such traces are sometimes hard to find and applications like SD Maid can help you eliminate much of this "junk".
- Avoid keeping some applications running all the time
It’s very common to close an application and assume that it stopped running on the system but this is not always the case because it actually still cached in the memory of the device, Android makes it to be faster on reopening it later and often the system itself definitively closes the application automatically but that’s not always the case.
Firstly it is important to prevent certain applications from even opening and to do this we use apps known as Startup Managers, there are several options in the Play Store but I particularly like Autostarts. Once inside your Startup Manager you can choose which applications will be opened as the system is started or any action is taken (for example changing the state of your Wi-Fi); the ideal is to minimize the number of self-starting applications, leaving only the truly necessary ones without forgetting to be very careful to avoid stopping system applications because if they are unable to open themselves it can cause instability. Another way to prevent applications from opening or stay on cache all the time is to disable automatic updates of apps such as email clients and social networks but this is a more personal matter that varies from user to user, just remember that the more constant the updates are, the more time these applications will be running in the background and more power (CPU and battery) will be consumed.
Now that we’ve already took care of the self opening apps it’s time to find out when you really need an app to be closed for sure.
It's easy to know when to quit an application completely but it is necessary to first understand a basic concept about the system: applications and processes cached in memory are not always a bad thing, in fact as stated at the beginning of the topic they are a good thing because the application should open faster when launched again (hence the use of Task Killers usually worsens more than help if not done properly) but if you use an application to view the weather every morning and will only use it again the next morning this application can be closed without problems.
In our current official version of Android (2.3) already have a task manager that can be used to do this action (Settings> Applications> Running services > select the desired process and press Stop) but if you want a more advanced option there are several Task Managers that monitor processes and can be used to close them too.
PS: Again about the Task Killers: although its use is discouraged for the day-to-day because of the reasons already explained, if you plan on haevy gaming they can be the great saviors since these games need a lot of free memory to run without lags.
- SMS: clean your inbox
Message apps, both native and third-party tend to take quite some time to open if you have many messages on your mobile because everytime you run your message app it needs to load a large list of conversations, so cleaning your inbox periodically helps performance, the same goes for call log.
A tip for those who want to clear the messages inbox and call log without losing your information is backing up with applications like SMS BackUp + that emails you both your conversations and call logs, all within a specific marker so they won’t end up messing the inbox of your email or if your intention is to save only one or two most important message the native client and most ones available at Play Store have the option of forwarding SMS, simply by holding your finger over until the action menu opens up.
- Give your device a break
Like conventional systems for computers, Android also collects information in its memory and despite the “dumping information system” some of it is left in cache , which ends up requiring more processing on your device.
To end this there is a very simple solution: give a rest to the phone. Once a day or when you feel like the machine is running slow give it a reboot or shut down and leave it off for a minute or two before restarting, it should get rid of the cache and it can boost the speed of the phone, but attention: restart the machine and making it open up various apps on boot has no point so keep your boot clean (see related topic).
- About some specific applications:
Task killers (that goes for any app of this kind) are good for a heavy gaming experience (eg: GTA, Dead Space, Asphalt...) because those games need a lot of free RAM but for everyday use is preferable to don't use task killers and keep some of the apps in the cache so they open faster when they are requested again.
Deep sleep is an important part of the ROM performance when it comes to battery usage, applications like CPU Spy can check if this function is working correctly or No-frills CPU Control which in addition to monitoring provides the ability to adjust the frequencies and governors you want to use in your phone.
Chainfire3D is an useful app to change the way your GPU will work and customize it to gain performance or quality , notice that these values ​​tend to be inversely proportional.
Try always to use the lightest possible applications, it helps in memory. I for one think the galleries and music players of almost all default ROMs are too heavy and prefer apps like QuikPic and UberMusic.
Finally I would like to thank: XDA Users: Oodie, x10forevers, Vasishta Reddy, DiKeJ, 9Lukas5, FeraVolt, alzbac, Websites: lifehacker.com, limitlessdroid.com , doctor-android.com, androidcentral.com for helping with the tips on this guide and say that if you have a tip that is not in this guide feel free to share with us!
PS: I'm sorry if I made some grammar mistakes, English is not my first language and this is a pretty big article.

thanks...nice one..

Dude I screwed my music thing on x10 . Please help . Tried flashing xperia s music player . Now music icon has dissapeared . N power button seem to reboot all the time . Will updating binary files of xrec n then flashing again help ?
Please tel . Desperately.
Rooted x10 2.3.3 stock Rom
Sent from my X10i using xda premium

theMoiz94 said:
Dude I screwed my music thing on x10 . Please help . Tried flashing xperia s music player . Now music icon has dissapeared . N power button seem to reboot all the time . Will updating binary files of xrec n then flashing again help ?
Please tel . Desperately.
Rooted x10 2.3.3 stock Rom
Sent from my X10i using xda premium
Click to expand...
Click to collapse
Hey dude, I don't really know how to help you because I haven't had any similar problems but I'm pretty sure that you should try the basics: clear caches (dalvik included) and fix permissions.
Since I'm not a developer I can't really help you with the binary files but try reaching your ROM's developer and he might help you
I hope you get your phone fixed

Dude u sure that I should clear off dalvik cache ? I tried fixing permission but still nothing . The power button rebooting the phone is more irritating than not having a default music PLAYER . Im asking in this forum but havent got the solution yet :'(
Sent from my X10i using xda premium

Excellent post Buddy . Hope you update the thread with other power users opinions & Tips .
Thanks.
Oodie.

theMoiz94 said:
Dude u sure that I should clear off dalvik cache ? I tried fixing permission but still nothing . The power button rebooting the phone is more irritating than not having a default music PLAYER . Im asking in this forum but havent got the solution yet :'(
Sent from my X10i using xda premium
Click to expand...
Click to collapse
I think that the only people that can help you are the ones on your device's specific forum man, try creating a topic there
Sorry but I really don't know what to do to fix your phone

Some of the tips are a complete waste of time and utter crap (mostly those related to keeping RAM usage low and task killers [EDIT: actually, you contradict yourself on these points], giving the device time to "adapt" to the environment -seriously?- and going for the lighter apps -this obviously applies if you have an outdated device, but it's not a rule).
EDIT: Forgot to say that the rest is good.

GermainZ said:
Some of the tips are a complete waste of time and utter crap (mostly those related to keeping RAM usage low and task killers [EDIT: actually, you contradict yourself on these points], giving the device time to "adapt" to the environment -seriously?- and going for the lighter apps -this obviously applies if you have an outdated device, but it's not a rule).
EDIT: Forgot to say that the rest is good.
Click to expand...
Click to collapse
As I said the guide was wrote based on Xperia X10 user experience so it is kind of an old device.
About the RAM management you won't have any issues with a top device with a lot of free RAM but in our case (old device users) we have about 256mb or less RAM to work with so keeping it well managed is essential if you want your device to run smooth.
The adaptation thing seems like BS but it's not, because your device need to create/edit some files as its being used and that's what this part of the article really means. For example your battery writes a log about its own capacities (making a long story short by recalibrating your battery all you do basically is reset this log)
Thanks for the feedback, hope you found something usefull

GuilhermeXOT said:
As I said the guide was wrote based on Xperia X10 user experience so it is kind of an old device.
About the RAM management you won't have any issues with a top device with a lot of free RAM but in our case (old device users) we have about 256mb or less RAM to work with so keeping it well managed is essential if you want your device to run smooth.
Click to expand...
Click to collapse
No, it's not essential. It's actually bad.
The lifehacker website seems to be down, so I'm giving you a link to this article instead (the article itself links to three more detailed articles; one of them is the lifehacker article I wanted to link; do read them): http://androidandme.com/2011/11/app...lers-still-dont-give-you-better-battery-life/
EDIT: Regarding the battery, draining the battery (to 0% or close) is actually bad for lithium based batteries and should be avoided. A discharge to 15% is usually enough.

GermainZ said:
No, it's not essential. It's actually bad.
The lifehacker website seems to be down, so I'm giving you a link to this article instead (the article itself links to three more detailed articles; one of them is the lifehacker article I wanted to link; do read them): http://androidandme.com/2011/11/app...lers-still-dont-give-you-better-battery-life/
EDIT: Regarding the battery, draining the battery (to 0% or close) is actually bad for lithium based batteries and should be avoided. A discharge to 15% is usually enough.
Click to expand...
Click to collapse
I get your point and I also talk about the same thing as the article in the guide: "the use of Task Killers usually worsens more than help if not done properly" , I just didn't elaborated on this very much.
Now, what I'm saying is that if you are a day-to-day user you don't need a task killer and it's recommended ONLY for a gaming experience, aka heavy games like GTA, Dead Space, etc...
"Task killers (that goes for any app of this kind) are good for a gaming experience but for everyday use is preferable to keep some of the apps in the cache so they open faster when they are requested again."
I'm not a task killer fan myself but if you check any gaming rom (DikeJ's for x10 is a good example) you can see that the developers try to maximize the free RAM because those heavy games use a lot of it.
So in order to avoid this kind of confusion I'll edit the article to solve this misunderstanding thx for the heads up

GuilhermeXOT said:
I get your point and I also talk about the same thing as the article in the guide: "the use of Task Killers usually worsens more than help if not done properly" , I just didn't elaborated on this very much.
Now, what I'm saying is that if you are a day-to-day user you don't need a task killer and it's recommended ONLY for a gaming experience, aka heavy games like GTA, Dead Space, etc...
"Task killers (that goes for any app of this kind) are good for a gaming experience but for everyday use is preferable to keep some of the apps in the cache so they open faster when they are requested again."
I'm not a task killer fan myself but if you check any gaming rom (DikeJ's for x10 is a good example) you can see that the developers try to maximize the free RAM because those heavy games use a lot of it.
So in order to avoid this kind of confusion I'll edit the article to solve this misunderstanding thx for the heads up
Click to expand...
Click to collapse
Cool, thanks for that

Buddy, that guide is awesome written, excellent work. And big thanks for credits - I'm very proud that I could help in that "project" ^^. It's should hit XDA Blog . Cheers .

DiKeJ said:
Buddy, that guide is awesome written, excellent work. And big thanks for credits - I'm very proud that I could help in that "project" ^^. It's should hit XDA Blog . Cheers .
Click to expand...
Click to collapse
I'm the one who have to thank you
People please share your ideas so we can make this guide better!

*RANT* bad Android memory management

Guys I have problem with Android smartphones. I am not the youngest anymore and remember the first PCs and first smartphones with 32x less memory then an average handheld device has today. I played with them all and know what they could do. The thing that still continues to surprise me till today on Android is WHY the heck can't an app stay in memory without being quit on the first occasion?? I really think that Android will never be usable for any serious work if things keep closing or reloading just after a few switches between apps!
Some examples: why can't I switch between Chrome browser and Onenote to type something without having that webpage be reloaded again using more data and sucking more battery power? I learned not to risk writing any bigger post into some forum lately because if I would have to switch to another tab to check some info or switch to another app the in progress text would most likely be lost because webpage would reload! Why is it so risky to switch out of some game to write a message or check calendar because it is very likely to be killed and my progress lost? The phones I used recently (Xiaomi Mi2s, Xperia Z3 compact, Xperia Z5 compact) have frikin 2GB of memory, so I wonder if nowadays apps are so much more memory demanding then before that this is simply still not sufficient. I just checked settings and some apps I just tested use few tens of MB, so it is still comparable to the times of Windows 98 or Windows mobile IMHO.
My first smartphone was windows mobile Samsung Omnia II with just around 90MB of usable memory and let me tell you that this problem was not happening on it! I could have several tabs with webpages (even non mobile versions) open and could safely switch on the camera, take pictures, write an sms and go back without having to worry that anything will be closed or reloaded! Why can't I open a camera app on Android and take a photo without having the previously open app be closed?
I can even compare today's android phones to one of my oldest pcs back in year 2000 or so. Imagine that it had just 64MB of RAM. I could have open many webpages in Internet Explorer (yeah it was far the best at that time , a few editors for web and text editing and I could even play some game and alt+tab back and forth without any problem! That was Windows 98 guys. Of course you will tell me that today's web pages for example are much bigger then in 2000. OK but what about mobile versions huh? I don't think they are that big so a phone with 2GB of RAM would choke.
I always thought that apps are supposed to be paused/frozen when I switch out of them but left in memory. Unfortunately it seems apps are being killed surprisingly often even when settings / memory shows hundreds of RAM free. The thing that is even more weird to me is that apps I had open just a few seconds ago are being closed upon switching to some other one and back, but the ones which I had active hours ago often stay in memory! That does not make much sense. Why doesn't android kill the longest not active apps first instead? OK, so do I have to buy OnePlus 3 or Meizu Pro 6 with 6GB of RAM to be able to keep simple 3 apps open without worrying that they will reload when switching out of them? As I showed this does not happen on much older devices with similar specs, so is this some fundamental flaw/feature of Android architecture or am I missing some simple explanation?
If you have experience with Windows Phones or iOS regarding this please share and compare.

So it seems everybody agrees
But I would really like to know some of your experience with other phones from the fruit company for example...

java
---------- Post added at 07:20 PM ---------- Previous post was at 07:11 PM ----------
> Why doesn't android kill the longest not active apps first instead?
There is some heuristic going on that calculate the oom priority and modifies /proc/PID/oom_adj so. For example (foreground) services have lower oom_adj (less likely to be killed by oom-killer). Actually I ended up adding code to my app that overrides /proc/PID/oom_adj to a really low number to keep it running (but that requires root - I also dont understand why *the user* does not have a chance to say "hey android keep running this app in the background!")
> Unfortunately it seems apps are being killed surprisingly often even when settings / memory shows hundreds of RAM free
Yeah that "low memory value" (ie when to kick off the oom-killer) is also set somewhere in /proc (?) It's 200MB on my phone with 2 gigs ram IIRC. To test what's getting killed (and whenl, etc.) this app is superb: https://play.google.com/store/apps/details?id=com.tspoon.androidtoolbelt
it's all even more annoying because starting even basic apps (like dialer or contacts etc. etc.) takes even seconds(!) if they are not in memory already (on any phone!) ... oh, well, java

Thanks for a reply! Have anybody tried MIUI? There is an option to lock an application and supposedly prevent it from being killed when multitasking. Just swipe up in tasks view and it marks it with a lock. I have just read this article and it seems manufacturers set these LMK values. I have a feeling they are really high for Sony phones. Maybe if I root mine I would be able to change those. Unfortunately it seems without root I cannot even view these values. They show as 0 in /sys/module/lowmemorykiller/parameters/ and cannot be opened. I can't open those oom files either.

yeah, defo need root for this

Oh and it gets worse. Because of this behaviour many apps use a nasty trick of setting up an alarm (usually with wake lock) triggered every second to make sure they are running (if a process is not running and there is an alarm for that process set up, the process is started).
So what happens is that the OOM/low-memory killer kills the app it is started by android framework the next second ... and it might get killed by oom-kiler again ...
It's interesting to run "apktool d foobar.apk" and grep the smali for "AlarmManager.set" on apps that want to run in the background ...

CleanMaster app is good and it saved me from exhausted internal capacity issues many times (on Z3Compact) and it also shows apps which frequently restart. Is that because of what you just wrote? I remember it was Pinterest a lot for example.

and it also shows apps which frequently restart. Is that because of what you just wrote? I remember it was Pinterest a lot for example.
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sounds like it could be the case but you it's hard to tell for sure - you would have to have a look at logcat at least

I have logcat. What would you search for there?

How you can improve the speed of your android device

Android phones and tablets would have surely gained your attention at one point or another, whether you are a tech-savvy person or not. Owning one makes you feel connected and in-the-loop. But are you really taking care of your Android device? While most of us focus on keeping its physical appearance from harm’s way, a majority ignore the fact that their device’s performance might be slowing down. And a slow Android device takes all the fun away.
Here is a list of some simple steps you can perform to make your Android device perform faster:
1. Perform an inventory of your apps
If you are not using all of your apps in the phone or the tablet, it might be a good decision to delete them permanently. An unused app is synonymous to carrying dead weight. It is commonly known that a full memory can affect the speed of all devices – Android or not. Hence, if you disable or delete apps that aren’t being used, you’ll free up a lot of space in your device and your device will end up performing faster.
2. Clean up your files
Android devices make the moment of clicking photographs and shooting videos very enjoyable. And it intensifies when the device is one that boasts of high-quality resolution. But as soon as these photographs and videos start piling up in your device’s memory, the performance gets hindered. Instead of getting yourself into this mess, decide once and for all which ones you’d like to keep in your device and which ones you can dispense off. Those that you can manage without having in your phone memory can be either deleted or moved to some sort of cloud storage (Google Drive, Dropbox, etc.). And since these cloud storage platforms can be integrated into your Android device, you don’t have to worry much.
3. Refrain from using live wallpapers
Live wallpapers sure are trendy and increase your cool quotient. But there is nothing much they can offer in terms of use. If you experience a downfall in the speed of your device, you can do away with the live wallpapers. Change the live wallpaper and move to a stagnant wallpaper, and see the difference in the speed of your device.
4. Use widgets only when required
Widgets are useful applications as they make the use of your device much easier. But despite the convenience they provide, they drag the speed of your device down. If you are experiencing a loss in the speed of your Android device, you can think of doing away with some widgets, at least the ones that you use rarely.
5. Check for updates
If there is a software update available, you can see it in your device’s notifications. If not, you can perform a check for them in the settings of your Android device. System updates don’t really help your device go back to its original speed, as much as they improve the overall functionalities and provide enhanced security to your device.
If you miss your Android of old days and wish for your device to be as fast as when you had bought it, perform some of these steps and see the difference. Although remember that you don’t need to do all of these steps, a mere 2-3 will be enough to bring about an improvement in the speed. After all, what doesn’t kill you makes you stronger.

Endive said:
make your phone faster by asking it to do less
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Hope this is the right place to be asking this question, (also, first post, Hi and all that) but supposing you've done all of the things you've mentioned above, and you still have woefully poor performance from an android device? In fact, what if you have done a factory reset and it still runs agonisingly slowly?
Specific issue: An Archos (yes, I know, not brilliant) cobalt 7 tablet. It was never *fast*, but it did at least respond fairly quickly. After using it for a few years it got noticeably slower and slower; it now takes several minutes to boot, and just asking it to swipe to a different screen and start a basic app takes more minutes. Removed all the apps, deleted everything from the internal memory, barely any improvement. Factory reset.. no improvement. Put a couple of apps back on it afterwards and it has now all-but stopped.
I'm not after doing anything clever with it, just want to get it back to factory performance. I had a quick search of the forum in general, but haven't found anything that seems to fit. (other than doing a factory reset...)

Cleaner Apps on Android 7+ - Useful, Useless, or Potentially Harmful?

Google Software Engineers have made improvements to the operating system over time to the point I believe the necessity and usefulness of these utilities is questionable especially if you are on Android 7 or later. Many people post their experiences with these apps without acknowledging their operating system version which could be significantly different than many other users.
This article "Android Apps You Should Remove Immediately" on Adroid Pit (you can Google it) recommends you get rid of these types of apps.
But there are lots of other articles, forum posts, article comments (mostly older) that swear by these apps.
Maybe out of the dozens of functions in these apps there's one or two useful ones on Android 7 (although my LG G6 already comes with a Smart Cleaner app)
Are the majority of Android 7 users using these apps basically blindly using them because they feel good to use and aren't actually getting the significant benefit they think they are getting? Could many of them, especially the ones that may "try to do too much" actually be hampering your Android 7+ phone more than helping it?

The only app I would recommend is ccleaner
https://play.google.com/store/apps/details?id=com.piriform.ccleaner&hl=en_GB
It does the following
clears all apps caches which could save alot of storage space - especially good if you have apps that store alot of cache files like twitter for loading images faster but since in most cases you only look at the image once you really dont need it cache it to load up quicker
It can also do the following if you ask it to
Deletes downloaded files/apks in one click
Deletes call logs
Deletes empty folders
Deletes browser history, clipboard content
And can also
Check the usage of your CPU
Keep track of your RAM and internal storage space
Check out your battery levels and temperature
Any other app which claims to "optimize" the phone probably does nothing unless it does the same job as ccleaner but in my opinion this is the easiest most trusted app to use