How To Clear App Cache Sgh 1497

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Hi everybody,

I've decided to tweak my old Tab 2 (AT&T SGH-i497 running 4.1.2 stock ROM) for speed, making it fairly usable again. After rooting and flashing twrp I've made a backup and started deleting all pre-loaded bloatware. After that, the tablet seemed a bit faster so I've deleted Google play services, Play store and most of google apps. Also, all apps related to cellular connection / SIM card were deleted since I'm not planning on using those features.

This is the list of apps currently on the tablet:
android system
com.android.calendar
com.android.certinstaller
com.android.chrome (needed for Google Maps Go)
com.android.clipboardsaveservice
com.android.contacts
com.android.defcontainer
com.android.keychain
com.android.MtpApplication (frozen - needed only when connecting the tablet to the PC)
com.android.packageinstaller
com.android.Preconfig
com.android.providers.contacts
com.android.providers.downloads
com.android.providers.downloads.ui
com.android.providers.media
com.android.providers.security
com.android.providers.settings
com.android.providers.tasks
com.android.settings
com.android.systemui
com.diotek.screen_capture
com.dsmartapps.root.kerneltweaker
com.flyersoft.moonreader
com.google.android.apps.mapslite
com.google.android.deskclock
com.google.android.tts
com.here.app.maps
com.infraware.PolarisOfficeStdForTablet
com.jrummyapps.rootbrowser.classic
com.mobsnake.verticalgallery
com.painless.pc Power toggles
com.sec.android.app.camera
com.sec.android.app.controlpanel
com.sec.android.app.popupcalculator
com.sec.android.preloadinstaller
com.teslacoilsw.launcher (Nova launcher)
eu.chainfire.supersu
mark.via.gp (Via Browser)
org.mozilla.firefox
org.pocketworkstation.pckeyboard (Hacker's keyboard)
stericson.busybox

Before all mods (after boot) used memory was around 700Mb, now's around 250Mb.
Current settings:
CPU gov: Performance
I/O gov: cfq
GPU gov: Performance

I'm posting this in hope that someone can suggest more ways to reduce memory usage even more. Maybe using lighter apps (compatible with 4.1.2) that can replace the ones I have installed, disabling receivers, etc...
I couldn't find a better kernel and ROM for this variant, maybe someone knowledgeable can help building a optimized kernel with overclocking capabilities, newer governors, etc...

Thank you all and stay safe!

Last edited: Nov 30, 2020

Occasionally, I'm planning to use the tablet as a wifi extender so I've installed a hotspot app on the tablet, but there's no shared internet on the connected clients. I've never had this issue on 4.4+, is this related to 4.1? Is there a hack to make this work?

Also, what kernel manager works best with Tab 2 from your experience?

Last edited: Apr 14, 2020

I can tell you what I've done to improve performance:
Don't install gapps
Use L speed with everything set to performance (except for ram manager settings that seems to mess with stability)

I can tell you what I've done to improve performance:
Don't install gapps
Use L speed with everything set to performance (except for ram manager settings that seems to mess with stability)

If you read the first post you'll see that I have no gapps...

Today's update:
1. A bit more memory released by turning off some services (telemetry, analytics and pretty much anything that starts with com.google.xxxx or com.facebook.xxxx) and some receivers using Service Disabler. After boot, free memory is around 210-220Mb.
2. I've disabled: "com.android.inputdevices" and so far so good.
3. I've installed L-speed as suggested by lukigno95 and disabled the kernel manager.

Does anyone know how to remove the mobile network signal icon from the statusbar?

Last edited: Apr 27, 2020

Is there a video calling app that works for this tablet with decent video quality?

Hi all,
Is there anyone that can help me getting overclocking an undervolting added to the kernel?
Thank you in advance!

which rom are u on?
Stock?

yes, stock 4.1.2 as mentioned in the first post...

What will help now is:

1. overclocking and undervolting added to the kernel
2. better I/O schedulers and CPU governors added to the kernel
3. remove the mobile network signal icon from the status bar since I don't use a SIM card

I hope someone knowledgeable from XDA can help, thank you in advance for reading this!

Last edited: Jan 28, 2021

Hi all,

I found a better launcher with low memory footprint, the issue is it only works on Android 4.2 or newer.

Will it be possible to make it work on 4.1.2? The source code is available, experts, please chime in!

Thank you!

Last edited: Apr 23, 2021

Hi all,
I found a better launcher with low memory footprint, the issue is it only works on Android 4.2 or newer.

Will it be possible to make it work on 4.1.2? The source code is available, experts, please chime in!
Thank you!

Tab 2 already has 4.2.2 right? or did they update only few variants?

The Android version of the tablet was mentioned 4 times in this post. You asked about the rom twice...are you replying just to increase your post count? If you can't contribute, please stop posting in this thread.

Last edited: Apr 23, 2021

The Android version of the tablet was mentioned 4 times in this post. You asked about the rom twice...are you replying just to increase your post count? If you can't contribute, please stop posting in this thread.

Sorry its been quite sometime and no why tf would someone want to increase post count :v getting it run on 4.1 would be quite hard maybe the dev choose 4.2 as 4.1 was missing somethings? can you not use custom roms as you will get next to no app support for 4.1.2 anyways if you want to still use 4.1.2 and optimise it good luck!

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