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I'm no developer, scripter, or any type of person with a thorough understanding of software but I will try to offer a suggestion to those who wish to give me the time of day.
After flashing countless ROMs looking for the fastest and most simple platform to use everyday I have discovered a few things that might help if people agree with me or not. After loading every ROM and first booting... I realize that Advanced Task Manager shows the available system memory at less than half and i haven't even started running apps or installing programs yet. Processes start when the phone boots up that are running in background (asleep but still using system resources) and i believe that a fair percentage of them are not required by the everyday user.
Why is Alarm Clock running in the background when i haven't started it? Why is Email client running and i haven't setup exchange or an email account? Messaging, Maps, Settings, Gallery, these all start up without being physically executed and are using resources. If there is a reason for them to be there like not being able to receive SMS if Messaging is not running, then that is fine and im an idiot... But if there is no need to startup the application from boot then why do it?
My second point is when packages are installed as the ROM is flashed, they cant be uninstalled right? well what if we didnt want tethering apps and facebook apps and proprietary software (Moto apps)? Most of these are available in the market and if not, a 5 min Google search will find an .apk on the net anyway.
So how about a bare bones install with the essentials and nothing else? Youtube, Phone, Messaging, Gmail, Contacts, MT Browser , Maps, Calculator... then anything else can be added at the users will.
If anyone else has something to say... or prove me wrong, then please elaborate.
If you delete the alarm clock task, you're likely to sleep into the morning as the alarm won't go off in the morning. Mail is probably needed for pop3 checks (I rely on my google account).
Anyway, I usualy remove the apps widgets from the ZIP which I don't need prior to flashing, resulting in a liter ROM and less processes which I don't need running in background.
I also used to add the apps I use (ASTRO...) directly into /system/app prior to flashing, putting them to the system partition and ... at this point I am not sure.... this leaves one with more space (internal memory) accessible for apps from market (if you do not use APP2SD). I stopped however doing so, as this makes ROM upgrading painful, as you do have to prepare each .zip before flash.
With regard to operating memory you preferably use either Taskkiller or have your systems autokill file optimized as many ROMS do (CursorSense). Refer to http://forum.xda-developers.com/showthread.php?t=622666
I'm not Linux-guy but I know that Android does this to put those programs in memory ASAP because those are usually the first few apps many people use once they boot up their phone -- meaning those apps, when opened, will quickly open and run faster.
Remember, Linux is made to handle all those opened apps and resources; "Unused RAM is useless RAM".
hol17 said:
I'm not Linux-guy but I know that Android does this to put those programs in memory ASAP because those are usually the first few apps many people use once they boot up their phone -- meaning those apps, when opened, will quickly open and run faster.
Remember, Linux is made to handle all those opened apps and resources; "Unused RAM is useless RAM".
Click to expand...
Click to collapse
Correct!!
People have to stop comparing Android (linux) with WinMo devices, they handle RAM completely different.
dione1200 said:
Correct!!
People have to stop comparing Android (linux) with WinMo devices, they handle RAM completely different.
Click to expand...
Click to collapse
Yes, true.... and well known. However Linux was developped for servers and not mobile phones.
Launching an application into free RAM is slower than pulling it from a suspended state. So much is true.
But first having to free up up RAM (by killing tasks) before launching the application into the freed up RAM is certainly slower than launching into free RAM. Probably that's why guys are tweaking around, as noted in the link of my post above. Also in my opinion the default settings are not optimal, that's why I use tweaked settings. Probably that depends on how you use your phone.
But I agree. Coming from Windows the whole LINUX concept is a f**** nightmare. There are thousands of different methods (Cache/Compcache/ Ext Cache)...
So it's good to have an expert around. Could you please enlight me, whether the system partition is of fixed size or size is been alocated during flashing. In other words, is the Userdata size fixed or depending on the system size? .... and is there a benefit of putting apps to the /system/app as they will go to system parition and I will have more internal storage available?
Thanks in advance.
feicher said:
So it's good to have an expert around. Could you please enlight me, whether the system partition is of fixed size or size is been alocated during flashing. In other words, is the Userdata size fixed or depending on the system size? .... and is there a benefit of putting apps to the /system/app as they will go to system parition and I will have more internal storage available?
Thanks in advance.
Click to expand...
Click to collapse
Your Android Device is divided Into partitions -> (Device memory)
1. Hboot (spl)
2. Radio
3. Data (Where u store ur data apps / passwords / other thing)
4. Cache (temp)
5. System (system dump)
6. Boot (to start the device)
so on
Now partition of memory card is important becoz
1. EXT2/3/4 More Amount of Data Section -> if device memory is less
2. Swap -> To fast up the system
*I m Not best Explaination giving person but i think this is understandable language in which i hav written
I think I side with the OP on this one, I would rather have a rom with less in it and then choose to install Amazon MP3 or whatever by myself. Generally speaking you could argue less apps = better performance, as there will be less happening in the background. That said, I have included Facebook in my rom.
However Linux was developped for servers and not mobile phones.
Click to expand...
Click to collapse
Not really true, Linux is just the kernel and can be ported to anything, it's been in embedded small devices for years and not just installed on servers.
ahmgsk said:
Your Android Device is divided Into partitions -> (Device memory)
1. Hboot (spl)
2. Radio
3. Data (Where u store ur data apps / passwords / other thing)
4. Cache (temp)
5. System (system dump)
6. Boot (to start the device)
so on
Now partition of memory card is important becoz
1. EXT2/3/4 More Amount of Data Section -> if device memory is less
2. Swap -> To fast up the system
*I m Not best Explaination giving person but i think this is understandable language in which i hav written
Click to expand...
Click to collapse
Thank you very much for the feedback! Most appreciated and helps me to improve my general understanding . I find it really hard to come by information, that is not absolutely basic or high level expert.
Thanks again.
Ive got a clock radio that wakes me up... if i have lagging issues with my phone what i do is use advanced task manager to stop all processes im not using (alarm clock, maps, messaging, email, etc) and everything runs fast again.
No use in reboot cause all the apps start again from boot.
ive tried removing zips from rom before flashing... when i goto upgrade the update stops cause of the missing files > incomplete manifest. is this cause you have to re-zip and sign it?
You can either do that and re-sign the zip file.
OR you could just close this thread and use adb to remove things that you dont want from the ROMs.
PS. root explorer also works wonders.
feicher said:
If you delete the alarm clock task, you're likely to sleep into the morning as the alarm won't go off in the morning. Mail is probably needed for pop3 checks (I rely on my google account).
Anyway, I usualy remove the apps widgets from the ZIP which I don't need prior to flashing, resulting in a liter ROM and less processes which I don't need running in background.
I also used to add the apps I use (ASTRO...) directly into /system/app prior to flashing, putting them to the system partition and ... at this point I am not sure.... this leaves one with more space (internal memory) accessible for apps from market (if you do not use APP2SD). I stopped however doing so, as this makes ROM upgrading painful, as you do have to prepare each .zip before flash.
With regard to operating memory you preferably use either Taskkiller or have your systems autokill file optimized as many ROMS do (CursorSense). Refer to http://forum.xda-developers.com/showthread.php?t=622666
Click to expand...
Click to collapse
when i try to remove an app from a ZIP it wont let me flash the ROM. even when i replace an app with a newer version renaming it to match the one im replacing, it still doesnt work. what do i have to edit in order to allow the update to go through?
You need to sign the zip file again. Google signing ROMs, its the first thing that pops up.
First off as a first time poster but long time reader, hello everyone.
Now my concern is, is anyone else having issues with Rom Manager lagging? I'm running newest release from Market(v4.2.0.2) and when I start the app, the little waiting circle keeps circling and circling, I can access all the main functions except manage/restore roms. It just doesn't load up the backup files. Even on the main menu the app appears to be still loading, though I can access Reboot in Recovery and Fix Permissions actions. Just not the manage/restore part.
I've tried uninstalling/reinstalling, FC/wipe data, and even FC > wipe data > uninstall > reboot > reinstall from Market. The issues still remain.
Thanks in advance for any help an insight.
I'm getting a similar problem. For me, when I open the app, the screen is black for some time (the app is an empty black screen), and then it shows the available functions.
Sent from my LG-P999 using XDA Premium App
same here, maybe it's checking for updates off the internet? i have noticed that sometime the text of the menus shows up before the icons next to the text...so maybe that bit of the programming needs tweaking....
And I thought it was only me.
Sent from my LG-P999 using Tapatalk
Mine only begun this problem after CM7. I'm going to be out for awhile, but perhaps someone could post a logcat while RomMan is opening?
It stalls for a second or two before the menu shows up for me, too. It also can't see my backups, but when I go into recovery they are there.
It's always been this way for me no matter what phone I use. It's gotten slightly better over time but it's still super dogish. It's going online and checking all the resources looking for the new ROM/kernel versions and now it pulls back ratings and comments too.
Rom manager looks for backups in the internal SD and CWR creates your backups to external SD. You can manually move them when mounted to computer or file manager of some sort if you want but in general rom manager is buggy for our phones due to tegra processor.
Multiple threads in the development section explain further, however you shouldnt be using rom manager to flash anything right now based off their reccomendations including the recovery (use NVflash). See the development section as well as use the old school flashing methods until a fix is implemented.
These guys are getting flooded with the same questions and problems so be sure to read the OP instructions and search the thread for your individual problems for there sake.
Hi, I have a MID-756, also known as an F900, Quadcore A33, with Android 4.4.2. A bog-standard cheap tablet, but having installed a 10,000mah battery, quite a useful device that lasts for several days.
The performance isn't super-sparkly and it does appear to run out of some types of memory sometimes, with browsers prone to shutting down without warning when reading newspaper websites. So I purchased Link2SD Pro and moved as many things as possible to the internal SD card. This also allows you to set some system programs as user programs, which then enables you to move them to the SD card as well, which is very useful.
I also did this with google play store and google play services, and that is when it went wrong, as google play store no longer worked. Based on things other people suggested, I tried various things like clearing caches, but that didn't work. I tried to use the browser to go to the play store and update them, but it said things like, "App will be installed later" - but which never happened. I tried to download google play services and play store APK's from a repository and after deleting the originals I installed them from the APKs. It nearly worked - it got to checking permissions, but instead of starting the download progress bar it said, "Unfortunately google play store has stopped", or words to that effect. Based on one suggestion I tried clearing the data for services and google services framework, and then it wouldn't even connect to the store at all.
So I saved important things and then did a factory reset, under the naive impression that it would restore it to how it had arrived. I discovered that it only clears user data and programs, and does not restore system apps that you've stupidly deleted. Having reinstalled the play services and play store from the downloaded APK's it still wouldn't actually download anything as it failed at the progress bar stage with the same message as before - "Unfortunately google play has stopped".
The other thing is that after doing a complete reset the keyboard became chinese, and having to use the old 'Nokia' way of entering English using a numeric keypad is a nuisance. So I'm keen to be able to restore the Play store function so I can at least download a better keyboard.
I've tried to download the gapps file, saving it on an external SD card and installing it on its own as suggested by one person, even going to the Pico version and each time I get "E: Error in /tmp/sideload / package.zip (status error 255)", which apparently means not enough memory according to one person.
I have looked for a custom ROM to install from scratch, but there don't appear to be any for this model. I considered reinstalling the original ROM I downloaded (exdroid4.4.2_r2-a33-v2.0) but I haven't found a mid-756 driver file so my understanding is that it is highly likely to fail.
I can't now reinstall the Link2SD app in order to set the play-related apps back to system apps again either, even though I tried uninstalling and then reinstalling on my rooted phone in order to get the .APK files and then transfer them across to the tablet. It appeared that the .APK files were automatically deleted from both the app and the Pro licence app.
I'm feeling I've right royally screwed my tablet. I know it wasn't that expensive, but it is pretty useful with the massive battery so I'd really appreciate any pointers to help fix it. I've read the suggested threads but as I can't find a driver file for this device, reinstalling the whole ROM from scratch doesn't seem like a good idea. Is it safe to clear the Dalvik cache and reinstall a whole gapps package though? I'm cautious because so far clearing other caches does not seem to have improved anything and in one case made it worse.
Very grateful for any help received!
Mike
Ok, didn't get any help but finally fixed it and people might like to know how I did it:
To recap, the situation was: Rooted MID-756 / F900 tablet, having deleted play store after it stopped working when I made it a non-system app, and after doing a full reset, found that the only keyboard option was a japanese one with Nokia-style input for Western typeface. Complete nuisance to use and with hardly any even standard apps remaining after I'd previously moved them to SD card, which was then wiped when I did full reset. So, close to useless.
Solution: Use another Android 4.2 phone, and for each of the following apps, [ Google play services, play store, Link2SD, Link2SD (new)] do the following steps:
a) in Link2SD, select an app.
b) in the details screen, from the options menu, select 'share apk'. You may need to scroll the menu up if your screen doesn't show it.
c) When the share apk options come up, select 'google drive'
d) go to your PC, and in google drive, change the name to xxxxx.apk . I don't know why the .apk seems to get missed off, but you need to add it back in again.
e) Once you've done all four apps, copy all of them to a micro SD card.
f) Put the micro SD card in your tablet.
g) in a file manager, go to the external SD card, and click on the google play services.apk. This will take you through the install procedure. When it has finished installing, reboot.
h) Do the same with Link2SD and Link2SD(new). Even if it says that the licence won't verify (it will show a red triangle next to the name when the app is open), don't worry. Select google play services, and in the detail screen, from the options menu select 'convert to system app'. Then reboot again.
i) Do the same with Play Store - install apk, reboot, convert to system app using link2SD and reboot again.
f) Open Play Store. You will probably have to go through some account setting up of google play store which should be familiar to you. This time when you get to play store and try downloading or updating something it should work. If it still doesn't, do one more reboot.
You can now restore all your previous apps, including the google keyboard if you've screwed that up by doing a hard reset. You will now be able to use a proper keyboard again.
If Link2SD was not verifying the licence for the paid version, when play store is working again you should find it will now check the licence properly.
The moral of the story: Play store does not work as a user app, it needs to be a system app, so don't try to convert it to a user app in the first place.
coolinventor said:
Ok, didn't get any help but finally fixed it
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Click to collapse
Ok so I think you are new to xda and so I want to tell you that you will only get a reply when you post summarized threads.
Posting long posts will not get much attention
You can post small posts and then just elaborate your problem when you get a reply
Remember my advice next time whenever you post
Regards milkyway3
You're correct - Point taken, thanks
coolinventor said:
You're correct - Point taken, thanks
Click to expand...
Click to collapse
And ya also remember
Always thank the post using the thanks button whenever you get any help because it is meant for it and these thanks are recorded by the xda community
Regards milkyway3
Doh! I'll get the hang of it eventually
The phone is brand new, runs Android 9 and - like the title says - won't install any apps. This happens either if I want to download apps from the store (the download happens but then I get an error message that the app can't be installed) or if I want to install an apk file from my sd card.
On the internet dozens of sites keep repeating to clear cache and data from Google store and Play services. No way! Even after a factory reset the situation doesn't change.
I also flashed the phone with its firmware ... the result stays the same.
I tried changing user account and double-checked my connection.
I will eventually return the phone to the seller, but, until then is there anything else I might try that escaped me?
Thank you
The cause for this problem ( Error 910 ) is that there is not enough available storage space.
Fix: Make some space.
try to install apps from browser (open google play on your computer and login to your play account that added to your phone ), remote installation , the apps will be installed your device , then open google play and you will be able to install apps directly from google play
Thank you jwoegerbauer and eslamdiaa2 for your replies.
Jwoegerbauer, the phone is new and no apps have been installed. I'm attaching a pic to prove there is plenty of space.
eslamdiaa2 I did try the remote installation. The app is sent to the phone but the result is the same: can't be installed (like in the picture of my opening post). Besides, I also said I can't even install apk files from my sd card.
ok, try to clear cache for google play services , and restart your phone
Been there done that. Like I said it in my opening post.
I have the same issue. Please try this code ( *#13579*# )
Thank you so much kiwi1688. That code WORKED!!! You're a life saver!!!
There may be various reasons behind this error, but for now, you can check and follow these steps whether they are working for you or not.
Clear the cache and data of the Play Store
This gives the app a fresh start and can help fix issues.
Steps are:
Open your device's Settings app.
Tap Apps & notifications See all apps.
Scroll down and tap Google Play Store.
Tap Storage Clear Cache.
Next, tap Clear data.
Re-open the Play Store and try your download again.
Thanks bracknelson but in my case it was NOT a question of clearing cache and data (which was the very first thing I have done). Odd enough I had to "enable" app installation with the code provided by kiwi1688. After entering the code a confirmation message appeared and since then I was able to install any apps.
Before that I was about to return the phone to the manufacturer because it was far from my mind there was a code to be entered. Weird!
I've tried all the commonly suggested troubleshooting tips for unresponsive or problematic apps (from the simple deleting cache to the drastic factory reset). Real Racing 3, Mobile Legends, and Darkness Rises are the 3 games that currently do not wish to load past the startup screen. For the most part, it seems to be caused by a server timeout. This also seems to be in no way related to my network connection, due to the fact that pubg mobile starts and runs smoothly. I'm always running the latest software and this problem has been plaguing my Galaxy S20 Ultra since approximately fall of 2020, first noticed with Mobile Legends (a game I played quite often for a couple months prior to this).
My guess is the 3 mentioned games have a problem with data corruption already occurrred whilst downloading them. Take note that an app's resources ( images, graphics ) typicallly get stored in /Android/obb folder hence isn't affected by a Factory Reset.
The get the very reason why these games don't start do a LOGCAT. Take note that you can filter Android's logcat output because there are many messages which are not of interest for you. More info here:
Android Tutorial => Logging and using Logcat
Learn Android - DefinitionLogcat is a command-line tool that dumps a log of system messages, including stack traces when the device throws an error and...
riptutorial.com
jwoegerbauer said:
My guess is the 3 mentioned games have a problem with data corruption already occurrred whilst downloading them. Take note that an app's resources ( images, graphics ) typicallly get stored in /Android/obb folder hence isn't affected by a Factory Reset.
The get the very reason why these games don't start do a LOGCAT. Take note that you can filter Android's logcat output because there are many messages which are not of interest for you. More info here:
Android Tutorial => Logging and using Logcat
Learn Android - DefinitionLogcat is a command-line tool that dumps a log of system messages, including stack traces when the device throws an error and...
riptutorial.com
Click to expand...
Click to collapse
Alright, so it seems that the problem was Android Webview. I uninstalled the updates and everything loads up like normal now (after one year of deprivation). How come this isn't suggested on a Google help thread or anything actually useful, such as this, instead of the useless default response suggesting a factory reset or deleting cache?