Database Users

[ ROM / 3-9 ] Calkulin's G-Tab v1.1 [ 3991 l Battery Saver script w/ Profiles ]

G-Tab Series
Based on rooted 2.2 / FRF91 - TnT 3991
ROM includes:
Tweaked stock TnT #16 kernel
GApps
LauncherPro
AOSP Keyboard
EStrongs File Explorer
Facebook
Quickboot
Busybox
and a couple more
(Removed apps are in the sdcard/Removed_Apps folder)
MODs included:
Tweaked system(Very FAST)
Reduced auto-brightness range for better battery life
Removed USB Debug notification
Colored notification icons
Tweaked internal storage & SD card read speeds
Annoying ads in programs are blocked
Rotation fix
System has also been de-odex'd, apk's have been optimized & aligned
Notes about Battery Saver script
Can be used with stock or custom kernels
It completely eliminates the need for SetCPU or Overclock Widget
Easily customizable if you use a text editor(scripts located in /system/etc/init.d)
It will set Max/Min CPU speed to 216MHz when a sleep
If SetCPU or Overclock Widget are detected, the script is ignored, so it will not affect them
Preset profiles are:
1.2GHz(when OC kernel is available) - 100-90%
1.0GHz - 89-51%
912MHz - 50-16%
816MHz - 15-0%
v1.1
Switched to a tweaked stock TnT #16 kernel
Tweaked Battery Saver script
Tweaked a couple misc files
Fixed Flash Player to work with Hulu
Important Notes - Due to how this ROM is setup, a wipe is recommended BEFORE flashing (I recommend using my Format ALL zip attached)
Be sure to do a backup before flashing and read the change log
G-Tab ROM (v1.1) - Mirror
All ROM versions

............

Awesome man

Nice...going to give this a try later tonight...been waiting for your release Glad to see you've come over to the gTab...love all of your prior work and I'm sure I'll love your gTab work. Thanks!

Just a quick question...since this is based on 3991, it's probably not going to need the TNT enhancement pack since VS incorporated most XDA gTab fixes in that release, right? Just a curiosity thing...I wasn't planning on installing it at first, but maybe later down the road to test...thanks for everything you do

Download complete. I hope you enjoy the beer, I know I will be when I sit down with a cold one tonight and give your handywork a runthrough. Thanks.

Wow, this rom sure looks tweaked. Ill try it for a while and see the benchmark and other things. XD
If mac address spoof is abled, it might be my new best rom. Tnx for all the work.

D/L right now ... Will install when off work
Thanks Calkulin

incredible rom. Very fast and also good looking. 2250 of benchmark which is very good.

Thanks Calkulin! Downloading and trying it now.

Downloading now.

so is it pretty? lol..

WOOHOO!!!
Glad to see you're developing ROMs for gTab!!
I love your work on the EVO!
Your Format All pkg makes my life soooo much easier!!
Will report back ASAP.
Thanks!
EDIT: Can't download, invalid file on Mediafire and same on Mega Upload???

Its a good rom, but titanium is not working with it, keeps fc.
There is a bug with the contacts also, it has some white lines under sme of them, if not most.
Sent from my VEGAn-TAB-v1.0.0B5.1 using Tapatalk

Calkulin from EVO? This has to be good Makes me want to try my luck on another Gtab.

Download sites show no files available?

can not down load
can not down load

Well, aside from it powering down when I put it in sleep mode about an hour ago, very nice ROM...it's extremely responsive, snappy, and I love the boot animation, although it's kinda decieving, lol. You have a sort of honeycomb looking boot animation and even though I knew it wasn't honeycomb I started getting excited, lol. Great ROM yet again calkulin. Thanks

Just click the All ROM Versions link and download from there.. or click here.

sixshooterz said:
Just click the All ROM Versions link and download from there.. or click here.
Click to expand...
Click to collapse
Also not working now.

RR 3.0.9 ROM: link to a MALI Patch (fix memory leak + new kernels)

As an quite user here in the forum, it is not allowed for me to share things in the development section.
Just want share a link, which patches RR 3.0.9 with the latest MALI drivers. Therefore for all people which can not wait for an update of rr 3.0.9 it is quite fine: memory leak fixed (had been very annoying because my phone got frozen after 3 days without reboot) and enables you to use the latest dorimax kernels >7.0 (fine battery + speed)
Found the patch in an german forum:
http://www.android-hilfe.de/custom-...ma-ota-resurrection-remix-jb-3-0-9-a-162.html
the patch itself can be downloaded under the link (thank the user rush85 in that other forum):
https://docs.google.com/open?id=0BzvcR7D2Mt5KQ1JLMXJDQmFzNkk
1) I flashed over rr 3.0.9.
2) wiped dalvic. wiped extweakts profiles in cwm
3) flashed dorimax 7.3 (mali)
4) to be sure, wiped again dalvic & extweaks profile again
5) reboot
and ready to go!
--> Much faster + reliable (memory fixed) + nice powersave
http://forum.xda-developers.com/images/smilies/good.gif

a personal question & comment
by the way a question:
does anybody knows how to directly get access to the developer thread?
I have not much time to post. But I'm a heavy linux user on my 3 desktop PCs since over 6 years. Know much about linux kernel tweaks, debugging and android.
But also one critic to S2 users:
I've followed the Galaxy ACE threads for the last year and must say, that there the "developer threads" are much cleaner! No noop with "how can I flash this" or "where do I find this and that" is disturbing the replies of testing by the community for clean feedback & input for the developer(s).
- Sorry for that, but the people should just post relevant things there to make it easy for the serious testers and developers.

So after this patch ,can i flash parandroid 2.21 which ri8 now does not support dual booting in siyah ???

no. that patch is only for the ressurection Rom in Version 3.0.9.
it has nothing do with other ROMs or versions. you would break it.
I don't know who actually developed that patch. but it is working fine. next RR ROM after 3.0.9 will nevertheless have the Mali driver patches included, as the sources will be updated.
so in summary: just for the impatient waiting users of RR ROM.
Sent from my GT-P6810 using xda app-developers app

and just one thing I forgot in the first post: run also fix permissions in cwm after flashing the patch and kernel.
whilst waiting for a new RR release,
I'm now very happy with the performance and battery life of my s2! just bought ot 10 days ago to substitute my good old samsung ace 1.

Some hints for optimizing your s2
Just for because I want to know the experience of other people:
Did anybody tried that mali patch?
I'm running it since the first post here. My tips for an excellent battery life with good performance:
Remember I'm using the combination of RR 3.0.9 + mali patches + Dorimanx Kernel 7.3 (need the mali patches)
Make use of the extweaks settings to undervolt GPU (800 mV is ok for mine at low frequencies) and enable some sleeper mechanisms. I undervolt the CPU with the app cputuner (for all frequencies -50 mV; otherwise unstable for me). Because I'm a lazy person I automatically adjust the brightness via lightsensors (Velis Auto brightness app works fine; but also eats some small cpu time).
My extweak profile:
secondcore=hotplug
cpustepcount=15
scaling_max_freq=1200000
scaling_min_freq=200000
smooth_level0=14
scaling_governor=HYPER
load_l1=25
load_h0=42
min_rq=2
load_rq=20
rate=100
freq_min=700000
GENTLE_FAIR_SLEEPERS=on
ARCH_POWER=on
cpu_undervolting=+0
enable_mask=3
sched_mc_power_savings=0
busfreq_up_threshold=25
scaling_max_suspend_freq=600000
scaling_min_suspend_freq=200000
deep_sleep=ondemand
standby_freq=200000
mali_touch_boost_level=2
GPUFREQ1=62
GPUFREQ2=160
GPUFREQ3=200
GPUFREQ4=267
GPUVOLT1=800
GPUVOLT2=900
GPUVOLT3=950
GPUVOLT4=1000
GPUTHRESHOLD1UP=60
GPUTHRESHOLD2DOWN=50
GPUTHRESHOLD2UP=80
GPUTHRESHOLD3DOWN=75
GPUTHRESHOLD3UP=85
GPUTHRESHOLD4DOWN=80
mov_hysti=4
min_bl=40
min_gamma=1
max_gamma=24
power_reduce=on
user_mode=on
user_cb=127
user_cr=127
user_gamma_adjust=0
pwm_val=50
tsp_touch_freq=600000
tsp_slide2wake=off
mdnie_shortcut_enabled=off
negative_tweak=1
TOUCHSCREEN1=50
TOUCHSCREEN2=40
TOUCHSCREEN3=12
TOUCHSCREEN4=53
TOUCHSCREEN5=38
TOUCHSCREEN6=44
soundgasm_hp=0
sound_volume1=0
sound_volume2=0
sound_volume3=0
gesture_tweak=off
enabled=off
bln_switch=2
enabled_charging=off
notification_timeout=600000
bln_reset_notification=0
bln_charging_notification=0
bln_check_battery=6
led_timeout=off
tsp_flash_timeout=off
led_fadeout=off
touchkey_brightness=2750
logger=off
adb_mode=0
bootmenu_enabled=1
supplicant_scan_interval=360
zramtweaks=4
gpsregion=No_GPS_Zone_changes
scheduler=sio
usb_mode=mass_storage-adb
default_stats=on
chargecurrent=2
install_root=on
cortexbrain_background_process=1
cortexbrain_auto_tweak_brightness=off
cortexbrain_auto_tweak_wifi=off
android_logger=auto
cortexbrain_firewall=off
cortexbrain_tcp=on
cortexbrain_cpu=on
cortexbrain_memory=on
cortexbrain_battery=on
cortexbrain_extra_battery=on
cortexbrain_system=on
cortexbrain_kernel_tweaks=on
cortexbrain_io=on
For improving deep sleep times:
[A] Additionally I found out that it is really wothfull to get a baseband matching RIL modem configuration to get over 95% deep sleep. A good tool to check/correct this is:
"GetRIL"
I deactivated also "fast dormancy" (I'm on O2 in germany) with the App:
"Fast Dormancy Toggle i9300"
[A] and really did the trick to get a high amount of deep sleep for me. Without I had just approx. 75% and now up to 98% in G2 mode.
Playstore Issues due dpi change:
If you get problems with app compability in playstore after you changed the dpi in build.prop, I recommend to search for the "multi dpi playstore" replacement here in XDA.
Last thing which is interessting: no use to lower the CPU >200 MHz. Why with a clockfrequency of 200 MHz the equinox CPU is at the best rate of calculation speed / powerconsumption. Therefore lower frequencies: lower energy but more time to finish tasks --> worse than 200 MHz.
An really good and technical/scientific investigation with hardware measurements of voltages and power consumptions is given in a german forum FACTS and MEASSUREMENTS agains wild speculations:
http://www.android-hilfe.de/samsung...80670-info-akkuverbraucher-des-galaxy-s2.html

Nice post, I will try this out and give some feedback. I'm still on rr 3.0.8 and dormanx 5.82 but I want to update
Sent from my GT-I9100 using Tapatalk 2

GNUDroid said:
As an quite user here in the forum, it is not allowed for me to share things in the development section.
Just want share a link, which patches RR 3.0.9 with the latest MALI drivers. Therefore for all people which can not wait for an update of rr 3.0.9 it is quite fine: memory leak fixed (had been very annoying because my phone got frozen after 3 days without reboot) and enables you to use the latest dorimax kernels >7.0 (fine battery + speed)
Found the patch in an german forum:
http://www.android-hilfe.de/custom-...ma-ota-resurrection-remix-jb-3-0-9-a-162.html
the patch itself can be downloaded under the link (thank the user rush85 in that other forum):
https://docs.google.com/open?id=0BzvcR7D2Mt5KQ1JLMXJDQmFzNkk
1) I flashed over rr 3.0.9.
2) wiped dalvic. wiped extweakts profiles in cwm
3) flashed dorimax 7.3 (mali)
4) to be sure, wiped again dalvic & extweaks profile again
5) reboot
and ready to go!
--> Much faster + reliable (memory fixed) + nice powersave
http://forum.xda-developers.com/images/smilies/good.gif
Click to expand...
Click to collapse
I see this link but it isnt a flashable zip! How can i use this?
Thx and sorry for my poor english!

Hitman_911 said:
I see this link but it isnt a flashable zip! How can i use this?
Thx and sorry for my poor english!
Click to expand...
Click to collapse
click on file then download

I download the zip file. But I don´t know it is the cwm flashable or flash via Odin?

Unexist6969 said:
click on file then download
Click to expand...
Click to collapse
I only see multiple files but no zip file.
Can you send me in email?

psychotic14 said:
I download the zip file. But I don´t know it is the cwm flashable or flash via Odin?
Click to expand...
Click to collapse
If it's a zip file then flash through Cwm
---------- Post added at 10:17 AM ---------- Previous post was at 10:05 AM ----------
Hitman_911 said:
I only see multiple files but no zip file.
Can you send me in email?
Click to expand...
Click to collapse
What are you browsing with? I had the same problem, but it is probably the browsers you are using. Are you using stock android browser? I used opera mini browser, and the page loads quite differently and gives you an option to download the zip file.

hi everybody. sorry hat i did not replied for a long time.
yes hat mali patch Form a Google drive must be downloaded by click in 'Datei' and then hit something linke download AS ZIP. unfortunately that forum is in German.... also the nice poeweconsumption measurements I posted a link for. maybe someone has the time to make it a viable in English for everybody.
you can flash the malipatch zip over a installed rr 3.0.9 by cwm. don't miss the wiping steps and fix permissions.
At the Moment I am on RR 3.0.9 + mal patch + dorimanx 7.4. a perfect combination for me.
by the way. I always activate in the developer options the 'disable hw overlay'.
feels smoother for me.
so let us hope that the next RR release will have the Mali patches inside. .... but until that release I already enjoy this combination. - until now no reboot had been necessary due to the old memory leak seems to be gone.
Sent from my GT-P6810 using xda app-developers app

Nice job

Nick ZA said:
If it's a zip file then flash through Cwm
---------- Post added at 10:17 AM ---------- Previous post was at 10:05 AM ----------
What are you browsing with? I had the same problem, but it is probably the browsers you are using. Are you using stock android browser? I used opera mini browser, and the page loads quite differently and gives you an option to download the zip file.
Click to expand...
Click to collapse
I try stock browser, firefox and now opera mini but same result.

GNUDroid said:
by the way a question:
does anybody knows how to directly get access to the developer thread?
I have not much time to post. But I'm a heavy linux user on my 3 desktop PCs since over 6 years. Know much about linux kernel tweaks, debugging and android.
But also one critic to S2 users:
I've followed the Galaxy ACE threads for the last year and must say, that there the "developer threads" are much cleaner! No noop with "how can I flash this" or "where do I find this and that" is disturbing the replies of testing by the community for clean feedback & input for the developer(s).
- Sorry for that, but the people should just post relevant things there to make it easy for the serious testers and developers.
Click to expand...
Click to collapse
I similarly have much to share at times, but I guess you just have to post to post. It might explain why there are lots of irrelevant comments.
About your critic to S2 users, my guess is that the S2 is a lot more popular and hence you would have a lot more people asking questions. The upside is you have more developers making awesome stuff on it.
OH and about the patch, will try that later.

Again: How to download
Hitman_911 said:
I try stock browser, firefox and now opera mini but same result.
Click to expand...
Click to collapse
Call me old fashioned, but with things like firmware, roms and updates (not inly for a mobile, but other devices) I don't trust wireless. I always download serious things by desktop pc. There the download is quite fine with any browser. I used firefox. there is a screenshot attached.
But maybe this patch for 3.0.9 is not necessary, as we may get a new RR version this week. ? Let us hope the developer has some time after the the milestone release of the AOSP team is ready.

nice work!
can't wait for the next RR update

GNUDroid said:
Call me old fashioned, but with things like firmware, roms and updates (not inly for a mobile, but other devices) I don't trust wireless. I always download serious things by desktop pc. There the download is quite fine with any browser. I used firefox. there is a screenshot attached.
But maybe this patch for 3.0.9 is not necessary, as we may get a new RR version this week. ? Let us hope the developer has some time after the the milestone release of the AOSP team is ready.
Click to expand...
Click to collapse
Finaly success! Downloaded it! Install the google drive app and done!

How to get the best performance AND stability out of our Galaxy s3(Noob friendly)

BRACE YOURSELVES,LONG POST COMING!!
So,this phone is my very first one since 2013,and because i LOVE to tinker every software(even on pc) i decided to tinker my very first smartphone to the best performance possible !
I Learned a lot about this phone and 2 years later i decided to help others reach this point of optimization for this phone..
MY choice for android version for this phone is Jellybean(4.3) and i can explain why.
I choose this version because we want to operate our phone without A-N-Y bugs or FC's...
I choose this version because we want to get the best out of our camera....
i chose this version because I think(please dont sent hate posts) its the lightest software WHILE maintaning stability :fingers-crossed:
Well lets get started then!!
ROM:The best jellybean rom in terms of performance PLUS stability (my personal opinion again) is Just archi'shttp://forum.xda-developers.com/gal...m-justarchis-sammy-stock-deodex-root-t2855613, (IMHO The best developer for this phone ).
this rom use very little resources and it is as close to stock as possible with the basics (in terms of flexibility) baked in :good:
Also we all hate to admit that Sammy stock ROM is the most optimized because their sources is closed (so in sammies 4.4.2 -4.4.4 that developers port is laggy after some long term use so we cant blame them).
KERNEL: I chose this kernel because WHILE having enough stability,it delivers MASSIVE performance boost-And this is Boeffla's in synergy with zanezam's boeffla kernel with uber toolchain http://forum.xda-developers.com/galaxy-s3/development/kernel-boeffla-kernel-linaro-zzmoove-t2629184 http://boeffla.df-kunde.de/zanezam/linaro/i9300/samsung/jb43/stable/. THUMBS UP TO THESE DEVELOPERS :good: !!!
OPTIMIZATIONS: I'D like to share my boeffla kernel profile.this profile is aimed just a bit to performance while having good Sot's (4 hours+)...
Use Greenify!!! Its the best app available capable of hibernate you apps of CHOICE,freeing RAM to make the device snappy
i'd recomment to use it with XPOSED as you have more options to hibernate even system apps! :good:
ADBLOCK: use Adaway.It saves you from these ads that not only they are irritating,but you save a LOT of cpy cycles,which means cooler phone,still snappy while browsing etc.
Xposed modules:the only frustration about this rom for me is that it has no advanced reboot.. But its obvious because rom is as close to stock as possible). so if you want this you must install APM+ module found in download section inside xposed installer or by this link: http://repo.xposed.info/module/hk.kennethso168.xposed.apmplus.
SOUND:After a lot of scripts and mods about sound in our phone,i decided to settle to [/FONT]V4A app and their drivers because it has INSANE volume boost WHILE maintaining quality :good: .
music application of choice is "Music" by SONY because i find it to work best with V4A. just move the apk to system app to work.normal install dont work!
SYSTEM APPS REMOVAL: I removed those system apps,freeing a good chunk of storage AND RAM, WHILE maintaining stability and no FC'S or bugs or anything.
there is the following:
ChocoEUKor
RoseEUKor
SNS
PanningtryActually.apk
Best face
My Files
Adapt sound(needed to install V4A)
Capability manager service
simcardpermission
CoolEUkor
DirectConnectManager
Direct ShareManager
DroidSerifitalic
Enterprise permissions
Multimedia ui service layer
Page buddy noti svc
Remote controls
Samsung link connectivity
SyncmlDS
daydreams
Live wallpaper support
contacts sync Google
Nfc
Internet(stock browser,replace w ith chrome)
Music FX
vpn dialogs
deep sea
voice record
FWDupgrade
music sto ck app
Cloud agent
bcservice
enterprise sim pinservice
Flashbar service
syscope service
vpn services
factory mode
factory mode
factory test
ims framework
indiservicemanager
MDMApp
OMACP
pickup tutorial
ultracfg
And with all that, i achieved very little Ram consumption and less Cpu cycles :good:
I hope you find this useful!
see attachments for my RAM usage without pressing clear all, and boeffla kernel profile of my own.give it a try!
sorry for long post!
cheers!
Funky Pear

Thanks for this, just what I needed, I just got this phone.. upgraded from galaxy s1 =) .. looking for a close to stock experience with some adds, without any bugs, ( on s1 we had "SauROM" ) .. I hope theres something similar for this device. Maybe ill try archis , is there any other alternatives?

fiskigt said:
Thanks for this, just what I needed, I just got this phone.. upgraded from galaxy s1 =) .. looking for a close to stock experience with some adds, without any bugs, ( on s1 we had "SauROM" ) .. I hope theres something similar for this device. Maybe ill try archis , is there any other alternatives?
Click to expand...
Click to collapse
Im happy to help!
well, I must say that you should use the rom in the link first to see if you like sammy stock but a bit modded.there are many roms but ported Roms e.g Blekotas roms are indeed beautiful BUT due time eventually it starts to lag, which is not developers fault, its just a port.
Funky Pear​

If you have any questions please don't hesitate to ask! !!

The Funky Pear said:
If you have any questions please don't hesitate to ask! !!
Click to expand...
Click to collapse
I would want a rom based on the latest official samsung firmware, this rom is not it I think , maybe it doesnt matter?
EDIT: nvm im just gonna try it.

The Funky Pear said:
If you have any questions please don't hesitate to ask! !!
Click to expand...
Click to collapse
I have a issue, When I tried to install the zip, my CWM has no options to do so. All I have done so far is install CF-root. Do I need to install a recovery separately? how and what recovery should I install? Should I get boeffla kernel first?
And is there anything I should be worried about, do I need to update bootloader or anything like that. my current version is: i9300XXUGNA5 , with CF root.

Just flash TWRP not cwm its not compatible

fiskigt said:
I have a issue, When I tried to install the zip, my CWM has no options to do so. All I have done so far is install CF-root. Do I need to install a recovery separately? how and what recovery should I install? Should I get boeffla kernel first?
And is there anything I should be worried about, do I need to update bootloader or anything like that. my current version is: i9300XXUGNA5 , with CF root.
Click to expand...
Click to collapse
Go to playstore and install supersu, it will say that root binary must be updated.it will ask you to reboot if it is successful. Then go to playstorw again and install twrp manager.and install twrp.it should be quick!
Funky Pear​

The Funky Pear said:
Go to playstore and install supersu, it will say that root binary must be updated.it will ask you to reboot if it is successful. Then go to playstorw again and install twrp manager.and install twrp.it should be quick!
Funky Pear​
Click to expand...
Click to collapse
How come that the link you posted of kernel have last modified 2015-04-20. whats that u600
And on the official site downloads, the latest one there is last modified 2015-04-09.

fiskigt said:
How come that the link you posted of kernel have last modified 2015-04-20. whats that u600
And on the official site downloads, the latest one there is last modified 2015-04-09.
Click to expand...
Click to collapse
Uber 600 is a toolchain and it should be the best kernel for this phone because its faster than other toolchains, but is just a tad less stable.it worth flashing though!!
Funky Pear​

Nice guide for the beginners Together with Greenify, i would add one more usefull app called Amplify , to block wakeclocks for the best battery life.

Cooldato said:
Nice guide for the beginners Together with Greenify, i would add one more usefull app called Amplify , to block wakeclocks for the best battery life.
Click to expand...
Click to collapse
Well,you are right,but,i prefer to post the basics because i want to people understand what are they doing instead of blindly doing things. Amplify is a very good app but you should know what you are doing!!
Anyways,thanks for these words and as always im very happy to help for anything!
Funky Pear​

great tips! thanks

The Funky Pear said:
Well,you are right,but,i prefer to post the basics because i want to people understand what are they doing instead of blindly doing things. Amplify is a very good app but you should know what you are doing!!
Anyways,thanks for these words and as always im very happy to help for anything!
Funky Pear​
Click to expand...
Click to collapse
Yeah that's true ^^ Good to know ppl still making guides about this old but great smartphone Good job once again ^^

Cooldato said:
Yeah that's true ^^ Good to know ppl still making guides about this old but great smartphone Good job once again ^^
Click to expand...
Click to collapse
Thanks bro,i will try to add more things they can do,while keeping things simple and easy for anyone
Funky Pear​

I keep getting software update notifications, but I have installed a newer firmware (archis) than what I think the phone want to download (the latest version for my region, sweden is older than archis firmware in his thread).
going into settings I do not really see a option to disable to search for these updates.
Do you also get this?

You need to edit this post, you should not be advertising warez ...
The developer of the app in question is also a member of these forums and I wouldn't like him seeing other members pointing to his software being cracked...
Sent from my GT-I9300 using Tapatalk

Do you really think 4.3 makes impact on Camera quality???

Thanks to the OP and some comments here! Maybe black themes like this could help with the battery life as well http://forum.xda-developers.com/galaxy-s3/themes-apps/vrtheme-allbacksblack-s3-3-hologrey-t2341829

HTC 820 intensive use - Extend battery life - Ultimate tips

/***********************************/
Intro:
I was busy looking for a solution to make battery life last longer. After some tests i realised that it was not possible to set cpu frequencies on this phone without a custom kernel. So i came up with an ultimate solution to make battery last through intensive internet use. It's been nearly 11 hours that my phone is on without screen being switched off and on wifi. Here you go.
/***********************************/
Requirements:
Rooted Htc 820
/***********************************/
Installation:
Download Kernel adiutor from the playstore - https://play.google.com/store/apps/details?id=com.grarak.kerneladiutor&hl=en
Go to the menu -> CPU -> Set cpu governors to powersave for both the BIG and LITTLE CPUs.
De-activate Core 3 and Core 4 for both big and little CPUs.
Select Apply on boot to keep the settings for next time you reboot your phone.
/***********************************/
As simple as that you will get 2 to 3 times better battery life. *Note htc default battery saver should not be on for better results. I also realised that the phone charged much faster with this. Enjoy and dont forget to press thanks if this helped you and leave some feedback about it
I took much time trying to figure out how to make my battery last longer so i'm just sharing what i experienced with the wish to help others. blessed have a nice day peeps. Love dat phone :victory:
Click to expand...
Click to collapse

Good idea man
Trying it now
Thanks ?

medohatem said:
Good idea man
Trying it now
Thanks ��
Click to expand...
Click to collapse
Okay no prob.

thanks man this worked

It requires busybox, but I can't install busybox in my phone. Is it because of S-ON?

Take this and flash it
http://forum.xda-developers.com/desire-820/development/busybox-htc-820-t3083268

Will it work on a51_dtul desire 820u dual sim Indian version.. Running on lollipop 5.0.2? Download failed it says @Oel

It works on Lollipop. Europe single version. But it shut work on every version.

Or try this Busybox. Works also on Lollipop.

For me the download is working. Here is the zip, try it first.

I m worried if it will brick my phone, if u r sure then I'll go ahead @Oel

Make a backup in your TWRP Recovery from the system und you will be on the save side.

alok singh said:
Will it work on a51_dtul desire 820u dual sim Indian version.. Running on lollipop 5.0.2? Download failed it says @Oel
Click to expand...
Click to collapse
yes it works on htc 820u

alok singh said:
It requires busybox, but I can't install busybox in my phone. Is it because of S-ON?
Click to expand...
Click to collapse
you can also find busybox on playstore and install it

Vivacity said:
/***********************************/
Intro:
I was busy looking for a solution to make battery life last longer. After some tests i realised that it was not possible to set cpu frequencies on this phone without a custom kernel. So i came up with an ultimate solution to make battery last through intensive internet use. It's been nearly 11 hours that my phone is on without screen being switched off and on wifi. Here you go.
/***********************************/
Requirements:
Rooted Htc 820
/***********************************/
Installation:
Download Kernel adiutor from the playstore - https://play.google.com/store/apps/details?id=com.grarak.kerneladiutor&hl=en
Go to the menu -> CPU -> Set cpu governors to powersave for both the BIG and LITTLE CPUs.
De-activate Core 3 and Core 4 for both big and little CPUs.
Select Apply on boot to keep the settings for next time you reboot your phone.
/***********************************/
As simple as that you will get 2 to 3 times better battery life. *Note htc default battery saver should not be on for better results. I also realised that the phone charged much faster with this. Enjoy and dont forget to press thanks if this helped you and leave some feedback about it
Click to expand...
Click to collapse
Good post but i just have a simple query "De-activate Core 3 and Core 4 " won't this effects the performance of phone during DE-activation?

h1dd3n_sn1p3r said:
Good post but i just have a simple query "De-activate Core 3 and Core 4 " won't this effects the performance of phone during DE-activation?
Click to expand...
Click to collapse
depends on which type of user you are. If you're playing heavy games ect certainly this will effect performance. But for casual users which use some normal apps or for internet browsing, making calls, messages ect; there will be no noticeable decrease in performance.

AH got that .

Xposed for HTC 820pi
Vivacity said:
/***********************************/
Intro:
I was busy looking for a solution to make battery life last longer. After some tests i realised that it was not possible to set cpu frequencies on this phone without a custom kernel. So i came up with an ultimate solution to make battery last through intensive internet use. It's been nearly 11 hours that my phone is on without screen being switched off and on wifi. Here you go.
/***********************************/
Requirements:
Rooted Htc 820
/***********************************/
Installation:
Download Kernel adiutor from the playstore - https://play.google.com/store/apps/details?id=com.grarak.kerneladiutor&hl=en
Go to the menu -> CPU -> Set cpu governors to powersave for both the BIG and LITTLE CPUs.
De-activate Core 3 and Core 4 for both big and little CPUs.
Select Apply on boot to keep the settings for next time you reboot your phone.
/***********************************/
As simple as that you will get 2 to 3 times better battery life. *Note htc default battery saver should not be on for better results. I also realised that the phone charged much faster with this. Enjoy and dont forget to press thanks if this helped you and leave some feedback about it
Click to expand...
Click to collapse
Hello dear, I am a HTC 820pi user running in Android 4.4.2. I have rooted my phone but couldn't install any custom recovery. Is it possible to install xposed framework in my rooted phone? Mind it, no custom recovery is installed in my phone!!!!

jahangirbsmrau said:
Hello dear, I am a HTC 820pi user running in Android 4.4.2. I have rooted my phone but couldn't install any custom recovery. Is it possible to install xposed framework in my rooted phone? Mind it, no custom recovery is installed in my phone!!!!
Click to expand...
Click to collapse
not sure about this. try material design xposed installer, i think there is an option to install xposed framework from within the app. dont know if this is compatible with htc 820 though.

[TWEAK][MOD][BATTERY]Tuned interactive profile for battery+performance.

HTML:
#include <std_disclaimer.h>
/*
* Your warranty is now void.
*
* We are not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in here
* before using it! YOU are choosing to make these modifications, and if
* you point the finger at us for messing up your device, we will laugh at you.
*
*/
Here is a tuned interactive governor profile for the Asus zf2 ze551ml/ze550ml (1.8ghz version). It should work with custom kernels that provide interactive governor and kernel aduitor mod .
Full tune profile tunes CPU,GPU,I/O SCHEDULER,TCP CONGESTION ALGORITHM
Interactive tuned profile tunes the interactive governor.
Normal on demand returns back to default governor(use if you want to play demanding games for eg.).
Enjoy.
Instructions:
Download and extract the zip attached.
Copy the extracted profiles.json (using some root explorer)and paste it in /data/data/com.kerneladuitor.mod/files/ .
Restart KAM.
If KAM does not detect my profiles.json after pasting it in /data/data/com.kerneladuitor.mod/files/ run the following command from adb (Or Terminal) with root:
adb shell chmod 764 /data/data/com.kerneladuitor.mod/files/profiles.json
Remove <adb shell> for the command in Terminal.
IF The profiles still don't show Try this by @mclarence :
1)Rename the profiles.json (the one provided by me) file to something else (eg profiles_bak.json). Leave it in /data/data/com.kerneladiutor.mod/files/ folder.
2)Go into Kernel Adiutor (Or the modified version) and create a random profile, does not need to be anything specific.
3)Go back to /data/data/com.kerneladuitor.com/files/ folder and you should see another profiles.json appear.
4)Copy the contents of profiles.json of the one you renamed (eg profiles_bak.json)
Then paste it into the other profiles.json (created by Kernel Aduitor), delete everything inside of it.
IMP: ( Complete File Overwrite Works as Well)
Finally:
Restart Kernel Aduitor and it should appear in the profiles section.
Video:
https://youtu.be/qKj7iEKTXws
Version information:
Version:1.1
Status:beta
Created: 18/1/17
Updated: 18/1/17
Screenshots:
http://imgur.com/gallery/M55nY
Changelog:
V1.1:
(Help me figure out if this is better than previous version. Previous version has better SoT but this one seems to be bit better at standby. Feedback would be helpful.)
Made some changes to tuned interactive and full tune.
Added normal on demand mode to go back to default governor settings quickly.
V2.1:
https://forum.xda-developers.com/showpost.php?p=71240187&postcount=99
Credits:
@soniCron (for his idea of tweaking the interactive kernel)
@nutcasev1.5 (using some of his text and references for my tweaks from his (awesome) holo kernel thread)
@David 617 (for KAM)

Seinbenheaven
Why is the zip so big?It installs KAM too? Is this for the stock kernel too? Mm or N also? Have you used my profiles for reference? Would just like to know.

nutcasev1.5 said:
Seinbenheaven
Why is the zip so big?It installs KAM too? Is this for the stock kernel too? Mm or N also? Have you used my profiles for reference? Would just like to know.
Click to expand...
Click to collapse
Zip is NOT FLASHABLE!
Zip is big beacuse it has KAM inside.
I forgot to add credits for KAM. Will do it now.
This should work on any kernel with interactive governor(interactive governor doesn't depend on MM kernel or N kernel or on whether it's stock or its custom. This profile just fine tunes interactive governor tunables for better battery life AND equivalent performance. Do tell me if I am wrong!)
That being said, I should mention that it was tested on CM14.1/LINEAGE OS and it gave me 5.30+ hrs SOT on normal use without the performance hits that most battery saving governors have.
Yes your profiles and the post by @soniCron was the idea behind my profile. All credits to you guys!

What profile are you using? Are you using greenify too or not?
Another question. Is this tweak good also for standby?

zdbtsta said:
What profile are you using? Are you using greenify too or not?
Another question. Is this tweak good also for standby?
Click to expand...
Click to collapse
I use full tuned. It tunes interactive, GPU,io SCHEDULER,etc.
Of you have you're own settings for other things like GPU etc, you can use tuned interactive to just get tuned inter active governor.
No,I don't use Greenify(I don't get my notifications on time because of it)
About standby; it doesn't do much for standby. But I hardly lose more than 1 or 2% an hour on cm14.1.

Siebenheaven said:
I use full tuned. It tunes interactive, GPU,io SCHEDULER,etc.
Of you have you're own settings for other things like GPU etc, you can use tuned interactive to just get tuned inter active governor.
No,I don't use Greenify(I don't get my notifications on time because of it)
About standby; it doesn't do much for standby. But I hardly lose more than 1 or 2% an hour on cm14.1.
Click to expand...
Click to collapse
Thanks.
I see, so there is no solution now for 1-2% per hour battery drain, I think that sucks because when i was still using my ze550kl the battery doesn't drain that much in idle mode

Hi.
Using it now, seems really OK, I'll be back with impressions after 1 day of use. Thanks

Great!!!

After 4 hours, using the standard CM14 kernel. Really good.

Will this need to be reinstalled everytime the ROM is updated?
Sent from my ASUS_Z00A using XDA-Developers Legacy app

pedro1977 said:
Will this need to be reinstalled everytime the ROM is updated?
Sent from my ASUS_Z00A using XDA-Developers Legacy app
Click to expand...
Click to collapse
Yep.
Although not exactly if you just dirty flashed an update. Then you'll have to just enable the profile again thorough KAM.
Also maybe @say99 and @jrior001 would want to look into this?
Can this be included as default tuning for interactive in the builds?(or is it too much to ask. I don't know much about ROM development)

zdbtsta said:
Thanks.
I see, so there is no solution now for 1-2% per hour battery drain, I think that sucks because when i was still using my ze550kl the battery doesn't drain that much in idle mode
Click to expand...
Click to collapse
There hasn't been a single kernel or firmware for z00a that has better standby than this. 1-2%/hour drain just seems inevitable in z00a. Unless the creative and brilliant guys at lineage come up with something in the future maybe, who knows?
Given their commitment and how good cm14 and linos 14 turned out to be, I have high hopes.

Siebenheaven said:
Yep.
Although not exactly if you just dirty flashed an update. Then you'll have to just enable the profile again thorough KAM.
Also maybe @say99 and @jrior001 would want to look into this?
Can this be included as default tuning for interactive in the builds?(or is it too much to ask. I don't know much about ROM development)
Click to expand...
Click to collapse
I doubt that they would,. I'll wait till there's a flash and the settings/ enabling are remembered although I doubt this is feasible.
Sent from my ASUS_Z00A using XDA-Developers Legacy app

Siebenheaven said:
There hasn't been a single kernel or firmware for z00a that has better standby than this. 1-2%/hour drain just seems inevitable in z00a. Unless the creative and brilliant guys at lineage come up with something in the future maybe, who knows
Given their commitment and how good cm14 and linos 14 turned out to be, I have high hopes.
Click to expand...
Click to collapse
I wish they would come up withe a solution.:highfive:

Thank you, saved my day. I'm a newbie here, can you explain what you might have done (for research purposes)? Thanks in Advance.

zdbtsta said:
Thanks.
I see, so there is no solution now for 1-2% per hour battery drain, I think that sucks because when i was still using my ze550kl the battery doesn't drain that much in idle mode
Click to expand...
Click to collapse
hydra_30 said:
Thank you, saved my day. I'm a newbie here, can you explain what you might have done (for research purposes)? Thanks in Advance.
Click to expand...
Click to collapse
Here, read this
https://forum.xda-developers.com/nexus-5x/general/guide-advanced-interactive-governor-t3269557

Siebenheaven said:
Yep.
Although not exactly if you just dirty flashed an update. Then you'll have to just enable the profile again thorough KAM.
Also maybe @say99 and @jrior001 would want to look into this?
Can this be included as default tuning for interactive in the builds?(or is it too much to ask. I don't know much about ROM development)
Click to expand...
Click to collapse
If it's dirty then no need. Clean flash requires reinstall obviously. It's not recommended to include hard-coded tuning into a governor. Anyways the settings are different for each model but the kernel we use is the same so not happening.
Siebenheaven said:
There hasn't been a single kernel or firmware for z00a that has better standby than this. 1-2%/hour drain just seems inevitable in z00a. Unless the creative and brilliant guys at lineage come up with something in the future maybe, who knows?
Given their commitment and how good cm14 and linos 14 turned out to be, I have high hopes.
Click to expand...
Click to collapse
They are way ahead of you. Yesterday frameworks merged tighter system app management & all. Cmfm is doing a complete overhaul. It looks great now. & I'm going to do custom builds which are going to have even more tweaks.
Btw LinOS has merged some components of Blur from Xosp.

Here are some useful flashable files. The SU add on is for Roms based on LinOS to enable Native SU. The Lineage file manager should be compatible with any rom that has CMFM as default. Feel free to share. I take no credit. I didn't make this.

nutcasev1.5 said:
Here are some useful flashable files. The SU add on is for Roms based on LinOS to enable Native SU. The Lineage file manager should be compatible with any rom that has CMFM as default. Feel free to share. I take no credit. I didn't make this.
Click to expand...
Click to collapse
The file manager zip doesn't get flashed. Flash errors.
I installed it anyway by doing some stuff, but it still can't access SD card. Keeps flashing a toast that this operation requires root access.
But looks have improved. And so have features otherwise.

Siebenheaven said:
The file manager zip doesn't get flashed. Flash errors.
I installed it anyway by doing some stuff, but it still can't access SD card. Keeps flashing a toast that this operation requires root access.
But looks have improved. And so have features otherwise.
Click to expand...
Click to collapse
It need storage be a private app for sdcard access. I'll look into that.