Hi!
For past a week my phone succesfully upgraded to 4.1.2 jelly bean via samsung Kies. But! It turned down that because of that i got installed many unuseful programs for me and it just taking my battery too much. Example: before i got ICS and i rooted it with some CWM and other file in boot section (I read somewhere that my kernel is "unsecured" or smth like that, so it worked ) and i deleted some programs and using Advanced task manager pro i saw i got around 450mb memory available. now after JB has come, i got MAX 380mb and my battery is keeping alive less time.
http://forum.xda-developers.com/showthread.php?t=2308179
after using search button i found that thing the most useful for me. dunno if i need root or put new rom, that's why i am writing here (cuz im obviously noob) Can you PLEASE help me with that problem? its annoying that instead of 2 days, my battery (without doing almost nothing just typing messages) can live only 1 day. And, if something, can u get me some tutorial how to make this whole "rooting" please?
I bought my phone in UK from Amazon Warehouse. here is info about phone:
No. of model - GT - I 9100
Android system: 4.1.2
Modem version: I9100XXMS2
Kernel Version: 3.0.31-1211311
[email protected]#3
SMP PREEMPT Thu May 16
KST2013
Version No.: JZO54K.I9100XWLSW
Thanks again for any answers!!!
hektorenzo said:
Hi!
For past a week my phone succesfully upgraded to 4.1.2 jelly bean via samsung Kies. But! It turned down that because of that i got installed many unuseful programs for me and it just taking my battery too much. Example: before i got ICS and i rooted it with some CWM and other file in boot section (I read somewhere that my kernel is "unsecured" or smth like that, so it worked ) and i deleted some programs and using Advanced task manager pro i saw i got around 450mb memory available. now after JB has come, i got MAX 380mb and my battery is keeping alive less time.
http://forum.xda-developers.com/showthread.php?t=2308179
after using search button i found that thing the most useful for me. dunno if i need root or put new rom, that's why i am writing here (cuz im obviously noob) Can you PLEASE help me with that problem? its annoying that instead of 2 days, my battery (without doing almost nothing just typing messages) can live only 1 day. And, if something, can u get me some tutorial how to make this whole "rooting" please?
I bought my phone in UK from Amazon Warehouse. here is info about phone:
No. of model - GT - I 9100
Android system: 4.1.2
Modem version: I9100XXMS2
Kernel Version: 3.0.31-1211311
[email protected]#3
SMP PREEMPT Thu May 16
KST2013
Version No.: JZO54K.I9100XWLSW
Thanks again for any answers!!!
Click to expand...
Click to collapse
First of all you must search! (How to root)
- download This
- copy to your external sd card
- reboot to recovery (Volume Up + Home + Power)
- install zip from sd card
- choose zip from sd card (PhilZ-cwm6-XWLSW-XEU-5.07.0-signed.zip)
- wait to finish
- reboot enjoy rooted android
Related
- Hi -
- I'm requesting some help to teach me how to root my Samsung Galaxy S2 (UK)... - (?)
- I've never rooted any device before... - & can't seem to find a guide specific to my device:
Model Number: GT-I9100
Android Version: 4.0.4
Baseband Version: I9100XXLQ6
Kernel Version: 3.0.15-I9100XWLPT-CL941023
[email protected] #3
SMP PREEMPT Fri Jul 27 18:08:15 KST
2012
Build Number: IMM76D.XWLPT
- I'd really like to be able to root my device... - especially now as I am awaiting delivery of a Nexus 7 Device - & hope to root that also -
- Thanks -
D.
You'd probably be slaughtered alive for posting this question. This is xda, mate. Search, read and try before posting questions. And even if you do have to post a question, find the correct thread for doing so.
Since you asked, look through this thread for all your rooting requirements. Me and probably a million others like you have read that and then managed to root their phones following the steps mentioned there.
http://forum.xda-developers.com/showthread.php?t=1103399
Dont forget to thank the contributor.
Yours being 4.0.4 theres a problem with an EMMC bug bricking the phone. again, read the forums thoroughly before going ahead.
Just flash a pre-rooted kernel.
I guess there is a thread discussing about rooting.
flipd.d.mon said:
- Hi -
- I'm requesting some help to teach me how to root my Samsung Galaxy S2 (UK)... - (?)
- I've never rooted any device before... - & can't seem to find a guide specific to my device:
Model Number: GT-I9100
Android Version: 4.0.4
Baseband Version: I9100XXLQ6
Kernel Version: 3.0.15-I9100XWLPT-CL941023
[email protected] #3
SMP PREEMPT Fri Jul 27 18:08:15 KST
2012
Build Number: IMM76D.XWLPT
- I'd really like to be able to root my device... - especially now as I am awaiting delivery of a Nexus 7 Device - & hope to root that also -
- Thanks -
D.
Click to expand...
Click to collapse
***** PLEASE read this important information*****
-You are running stock 4.0.4 ROM which it's known to have brick bug on it's kernel.
-after rooting, DO NOT factory reset/data or restore any backup without changing your kernel to custom one. Siyah, Dorimanx, Dream, and Speedmod kernels are known to be safe.
-You must change your kernel after rooting. It's better to be safe than sorry
****How To ROOT*****
- Visit here: forum.xda-developers.com/showthread.php?t=1501719
- then flash any of the kernel I listed above
Swyped from my Samsung Galaxy SII
I have the same setup as you so I think you can look into my thread which i started yesterday and Jokesy took the time and answered all my questions there including linking to a guide (thank you Jokesy, fantastic). I did not use Odin, but i used CWM Recovery Touch.
After following Jokesy link i rooted my phone, i installed the latest siyah S2 kernel (no beta), i also installed Titanium backup and purchased the PRO key. After that i followed an external link of services and programs that i could safely freeze/delete.
It shall be said that i have been using SGS2 since last spring/summer and this was my first time modifying anything with the phone.
Here is my thread: http://forum.xda-developers.com/showthread.php?t=1841641
Frank
For simplest root just use method 1 from 1st guide in my signature. No CF-Root, no CWM needed. Just copy one file to external SD card and update from stock recovery.
- Thanks for the contributions... - there's a lot to take in -
- This 'Bricking Bug' is something of a concern... - so I'll be doing some more reading before I choose whether to proceed with rooting my SGS2 -
- Hopefully things will be simpler with the Nexus 7... -
- Understanding the various versions, terminology & methods etc. is giving me something of a head-ache today -
- But thanks again... -
D.
Jokesy said:
***** PLEASE read this important information*****
-You are running stock 4.0.4 ROM which it's known to have brick bug on it's kernel.
-after rooting, DO NOT factory reset/data or restore any backup without changing your kernel to custom one. Siyah, Dorimanx, Dream, and Speedmod kernels are known to be safe.
-You must change your kernel after rooting. It's better to be safe than sorry
****How To ROOT*****
- Visit here: forum.xda-developers.com/showthread.php?t=1501719
- then flash any of the kernel I listed above
Swyped from my Samsung Galaxy SII
Click to expand...
Click to collapse
I recently updated my phone to 4.0.4 via OTA... I lost my root!! my baseband version is i9100UHLPH, which kernel can i flash???
Jaycee_008 said:
I recently updated my phone to 4.0.4 via OTA... I lost my root!! my baseband version is i9100UHLPH, which kernel can i flash???
Click to expand...
Click to collapse
***** PLEASE read this important information*****
-You are running stock 4.0.4 ROM which it's known to have brick bug on it's kernel.
-after rooting, DO NOT factory reset/data or restore any backup without changing your kernel to custom one. Siyah, Dorimanx, Dream, and Speedmod kernels are known to be safe.
-You must change your kernel after rooting. It's better to be safe than sorry
****How To ROOT*****
- Visit here: forum.xda-developers.com/showthread.php?t=1501719
- then flash any of the kernel I listed above
Swyped from my Samsung Galaxy SII
Swyped from my Samsung Galaxy SII
different basband?
Hello devs,
I ran into a problem few hours ago and I am trying to work my way around and through it. I honestly did, I have already lost patience and feel like quitting life itself. I wiped my phone, installed a different BOOTLOADER, different MODEM, different CODE and different CSC. I did all this to install a new ROM, I didn't like the changes so I went for my backup and restored it. Everything was successful, except that the Baseband version hasn't changed at all.
What is a baseband? Does it matter if I installed a different one (it is supposed to be XXLPS-I9100)?
Thanks
Baseband and modem are pretty much the same thing mate. You don't need to have a particular one. If you find your signal isn't as good as it should/used to be, you can change your baseband at a later stage. It doesn't matter if you stick to the one you have. It won't spring up at night and chop your phone into two bits
Sent from my GT-I9100 using xda app-developers app
HAXTREME said:
Baseband and modem are pretty much the same thing mate. You don't need to have a particular one. If you find your signal isn't as good as it should/used to be, you can change your baseband at a later stage. It doesn't matter if you stick to the one you have. It won't spring up at night and chop your phone into two bits
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Hey i have a problem my samsung galaxy s2 is an indian version 4.0.4 and its baseband version is I9100 DDLPB so its ok to root it with another baseband verison?
I already posted in the wrong place one... I hope this is the right place.
------------------------------------------------------------------------------------------------------------
Hi,
I have a problem with my S2 after flashing to new firmware. This is the story:
- I purchased a S2. Everything worked fine. This was the data before I did something I shouldn’t have done:
PDA: I9100XWLQ2
PHONE: I9100XXLQ6
CSC: I9100DBTLPO
Sales code: DBT (only)
Android 4.0.4
Baseband version: I9100XXLQ6
Kernel version
3.0.15-1157945
[email protected] #3
SMP PREEMPT Fri Oct 26 16:17:36 KST
2012
Build number: IMM76D.XWLQ2
Kies worked fine (updated to the above).
- The only problem is that the firmware was DBT (German). The UI was in English but some applications were German. Nothing against Germany but I’m UK based.
- I decided to update to a new version using Odin, so I flashed:
I9100XWLPT_I9100XXLQ6_I9100XEULPA
This is where all the problems started:
Every time I boot I got a message saying the process android.(...).acore stopped
Clearing contacts cache/data did not address the problem
I read in this thread that this was due to instability of LP9 and it was advisable to use LP8.
- Flashed using Odin
Kernel_I9100XWLP8.tar.md5
I9100XWLPT_I9100XXLQ6_I9100XEULPA
- Now I have UK applications (which is good) but:
a) Every time I boot I get the message "Unfortunately, LogsProvider has stopped"
Clearing contacts cache/data doesn’t help.
b) When I try to use the phone (e.g. dial a number) I got a black screen for a minute or so and then the LogsProvider message. After that the phone application closes.
c) Kies stopped working with the message:
Your device's current firmware version is not supported to update firmware via Kies
Current firmware version: PDA:LPT / PHONE:LQ6 / CSC:LPA (DBT)
- Flashed I9100XWLPT_I9100XXLQ6_I9100XEULPA_HOME
Same problems
Now internal data is:
Android 4.0.4
Baseband version: I9100XXLQ6
Kernel version
3.0.15-I9100XWLPT-CL941023
[email protected] #3
SMP PREEMPT Fri Jul 27 18:08:15 KST
2012
Build number: IMM76D.XWLPT
In ideal world I would like to have an UK, unbranded, S2 and use Kies for future updates. Having said that, considering that the phone is almost dead any suggestion to bring the S2 back to life would be great.
I’m a little bit desperate... help... please
Thanks
~sf
P.S. I did search and read post, guides, notes, comments and info. I am not sure I understood all of it but I did try - I promise.
Well....why don't you just flash an unbranded stock ROM then? You could always update it via kies or OTA.
Should get 4.0.3 tho, dancing with 4.0.4's kernel might brick your device.
what you mean by "bring back to life", It is still working right?
gastonw said:
Well....why don't you just flash an unbranded stock ROM then?
Click to expand...
Click to collapse
This was the plan:
- Install an unbranded version
- Update via Kies
I didn't work
Do you have any suggestion for a UK-unbranded fimware version (4.0.3) that should work. My understanding is that it should be
a) for GT-I9100 (obviously)
b) XEU version (aka UK)
c) Android 4.0.3
Apart from that, is there any other important requirement?
Would this be ok: http://forum.xda-developers.com/showthread.php?t=1604254
gastonw said:
Should get 4.0.3 tho, dancing with 4.0.4's kernel might brick your device.
Click to expand...
Click to collapse
Ok - Message received. I'll use 4.0.3.
gastonw said:
What you mean by "bring back to life", It is still working right?
Click to expand...
Click to collapse
Well, not exacly. I can't make calls...
Don't worry about either your country or your calls. Search for an unbranded samsung official stock 4.0.3 ROM, flash it, check it out (smoothness and all) and then try to make a call. If it doesn't fly, just flash another modem
gastonw said:
Don't worry about either your country or your calls. Search for an unbranded samsung official stock 4.0.3 ROM, flash it, check it out (smoothness and all) and then try to make a call. If it doesn't fly, just flash another modem
Click to expand...
Click to collapse
I flashed
XEU 2012 April 4.0.3
I9100XWLP7_I9100XEULP5_I9100XXLPS\I9100XWLP7_I9100XXLPS_I9100XEULP5_HOME.tar.md5
I got the following messages:
"Unfortunately, Messaging has stopped working"
"Unfortunately, the process androind.process.acore has stopped"
"Unfortunately, LogsProvider has stopped"
I still can't make calls (black screen + above messages)
:crying:
factory reset & reboot maybe?
those are simple android errors.
gastonw said:
factory reset & reboot maybe?
those are simple android errors.
Click to expand...
Click to collapse
Good news. It looks like the situation has improved after the factory reset.
I'll go to sleep now (it's 2:50am here in London/UK). Tomorrow I'll check all the functions and but it looks like I'm going are in the right direction.
I'll post tomorrow about the results.
Thanks for your help gastonw - it is really appreciated. :good:
np, go get some rest now.
[Q] Brand new S2. After flash: errors, slow... (more questions)
Bingo! The factory reset worked. Everything back to normal. I have my UK application and Kies update to:
Android version: 4.0.4
Base version: I9100XXLQ6
Kernel version: 3.0.15-I9100XWLPT-CL941023
[email protected] #3
SMP PREEMPT Fri Jul 27 18:08:15 KST
2012
Build number: IMM76D.XWLPT
The only odd thing that the "About phone screen/Status" shows serial number 0000000000*. Not the end of the world.
Just a few additional questions
Now, before I make the same mistake again (do something I shouldn't, panic and ask for help)... If I want to root:
a) Can I do it without risking to brick?
b) Can I still use Kies after rooting?
c) Is there a recommended procedure that I should follow?
*update about it the next post.
Quick update about serial number 0000000000. Apparently, it is a 4.0.4 bug. The serial number is stored correctly internally but Android UI shows 0000000000.
The majority of people here probably already know that but just in case...
~sf said:
Now, before I make the same mistake again (do something I shouldn't, panic and ask for help)... If I want to root:
a) Can I do it without risking to brick?
b) Can I still use Kies after rooting?
c) Is there a recommended procedure that I should follow?
Click to expand...
Click to collapse
I manage to find the answers to my own questions :silly:
a/c) I followed the procedure described here. It worked great.
b) Yes. Kies doesn’t seem to care that the S2 is rooted
Result:
- 4.0.4 generic/unbranded/XEU firmware
- Updated and recognised by Kies.
- Rooted successfully.
- So far everything works smoothly and fast
Lesson learned:
- Factory reset after firmware flash resolved the problem.
I couldn’t be happier :good:
~sf said:
I manage to find the answers to my own questions :silly:
a/c) I followed the procedure described here. It worked great.
b) Yes. Kies doesn’t seem to care that the S2 is rooted
Result:
- 4.0.4 generic/unbranded/XEU firmware
- Updated and recognised by Kies.
- Rooted successfully.
- So far everything works smoothly and fast
Lesson learned:
- Factory reset after firmware flash resolved the problem.
I couldn’t be happier :good:
Click to expand...
Click to collapse
Happy to hear that, It's good to find answers just by reading a couple of post or googling around.
Now, I'd like you to read a little more about the brick bug and 4.0.4 ICS.
In the meanwhile, enjoy your device.
gastonw said:
(...)
Now, I'd like you to read a little more about the brick bug and 4.0.4 ICS.
Click to expand...
Click to collapse
I heard of it - although I don't know the details. The 4.0.4 Brick Bug is the reason why I flashed to 4.0.3 instead of 4.0.4.
The Samsung Update application updated to 4.0.4. It wasn't, strictly speaking, my direct choice. I could have ignored the suggestion of updating but I though that, since the update was coming from Samsung and it was applied to stock firmware, it was a safe choice.
gastonw said:
(...)
In the meanwhile, enjoy your device.
Click to expand...
Click to collapse
This sounds a little bit scary Should I be worried about something?
Lol, I remember you were on 4.0.4, told you It would be wise to go 4.0.3 and kies threw you back at 4.0.4.
Download gotbrickbug app from the store and check your chip (just for kicks). If it's insane, well...you can always go back to 4.0.3 and wait for the Jelly Bean update thru both Kies & OTA (Over The Air).
The thing is, you're completly safe whereas you don't flash any ROM or custom ROM, and perform things like wipes thru recovery and what not.
If you want to go in a flashing frenzee, then you might flash a safe kernel (like Siyah), but I think it's not the case, you seem to love Kies updates
The important thing is that your device is running smoothly on ICS; so, enjoy.
gastonw said:
Lol, I remember you were on 4.0.4, told you It would be wise to go 4.0.3 and kies threw you back at 4.0.4.
Download gotbrickbug app from the store and check your chip (just for kicks). If it's insane, well...you can always go back to 4.0.3 and wait for the Jelly Bean update thru both Kies & OTA (Over The Air).
The thing is, you're completly safe whereas you don't flash any ROM or custom ROM, and perform things like wipes thru recovery and what not.
If you want to go in a flashing frenzee, then you might flash a safe kernel (like Siyah), but I think it's not the case, you seem to love Kies updates
Click to expand...
Click to collapse
Hi gastonw,
Thanks again for you useful comments.
I suspected your comments about 4.0.3 vs 4.0.4 were related to my previous attemps of flashing 4.0... and your advice of staying away from it.
I run gotbrickbug and I'm happy to say it reports "Brick Bug? NO. Sane chip" - which I guess is good news.
gastonw said:
The important thing is that your device is running smoothly on ICS; so, enjoy.
Click to expand...
Click to collapse
I haven't tried all the functions but, so far, it works smoothly.
Well, ain't this a good weekend for you? lol
gastonw said:
Well, ain't this a good weekend for you? lol
Click to expand...
Click to collapse
Intense but rewarding :laugh: lol
This is my phone:
Model: Samsung Galaxy SII GT-I9100
Android Version: 4.0.3
Baseband Version: I9100XXLPS
Kernel Version: 3.0.15-I9100XWLP7-CL340913
[email protected] #3
Build number: IML74K.XWLP7
I've successfully flashed the "leaked" JB 4.1.2 ROM on my SGSII, just to see if I could do it - and then restored it back to ICS 4.0.3, with all my apps and data intact, using CWM recovery. While I had JB installed, I found that I couldn’t enable USB debugging, which made me nervous, as I know that a number of the utilities I’ve been using require it.
So my questions are these:
1. any ideas why USB debugging wouldn’t switch on, and what could be done about this?
2. if I were to do the JB thing again and keep it this time, could I use the same rooting mechanism that worked on ICS, and get all the apps and data restored - but this time running under JB? The package I used went by the name CF-Root-SGS2_XX_XEO_LPQ-v5.3-CWM5 – it includes CWM Recovery.
3. or if not, what is the best way to restore apps and data in this scenario? I really, really don't want to have to restore all my apps and data one by one when I upgrade my phone.
Of course I could just sit on my hands and wait until the official release.... Where’s the fun in that?
alecxm said:
This is my phone:
Model: Samsung Galaxy SII GT-I9100
Android Version: 4.0.3
Baseband Version: I9100XXLPS
Kernel Version: 3.0.15-I9100XWLP7-CL340913
[email protected] #3
Build number: IML74K.XWLP7
I've successfully flashed the "leaked" JB 4.1.2 ROM on my SGSII, just to see if I could do it - and then restored it back to ICS 4.0.3, with all my apps and data intact, using CWM recovery. While I had JB installed, I found that I couldn’t enable USB debugging, which made me nervous, as I know that a number of the utilities I’ve been using require it.
So my questions are these:
1. any ideas why USB debugging wouldn’t switch on, and what could be done about this?
2. if I were to do the JB thing again and keep it this time, could I use the same rooting mechanism that worked on ICS, and get all the apps and data restored - but this time running under JB? The package I used went by the name CF-Root-SGS2_XX_XEO_LPQ-v5.3-CWM5 – it includes CWM Recovery.
3. or if not, what is the best way to restore apps and data in this scenario? I really, really don't want to have to restore all my apps and data one by one when I upgrade my phone.
Of course I could just sit on my hands and wait until the official release.... Where’s the fun in that?
Click to expand...
Click to collapse
Might get a better answer in the Samsung Galaxy SII GT-I9100 forums.
Everyone just loves our forums so much they post here! We must be that awesome.
Hello everyone I just bought a new phone which is galaxy s3 , I read that my model may suffer the sudden death problem.
The device is new from the box and it is the 16GB model.
Its unrooted and running android 4.1.2
More information about it:
Baseband version: I9300BOLK3
Kernel version : 3.0.31 - 742798 [email protected] -111#1 SMP PREEMPT Sat Dec 22 17:04:04 KST 2012
Build number: JZO54K.I9300XXELLA
Sould I be afraid of audswn death or any proccesor bugs ?
check the SDS threads in General, they have all the info you need
samsung claimed the latest update has fixed sudden death issue,so far I do not see anyone who updated to latest firmware complain about sudden death.
wait, was there an official statement? got a link?
depends on how damage ur s3 had taken and if ur on the safe kernels and recoveries
If you are on XXELLA and haven't rooted and changed kernel then as far as anyone is aware you are protected.....although there has been no official confirmation, but analysis by the hard working devs suggests you're safe.
If you decide to root then make sure you install a recovery that has the fix(most of them now) if you change recovery - likewise with kernel, if you change that.
Thanks alot for helping so i understood that i am protected , i didnt root / change anyting all is stock and i am on XXELLA is that right ?
eyal1728 said:
Thanks alot for helping so i understood that i am protected , i didnt root / change anyting all is stock and i am on XXELLA is that right ?
Click to expand...
Click to collapse
Correct
Hi Guys,
It's been more than a year since i purchased my Samsung galaxy S3 and almost the same amount of time since i have done any modifications on any android device. I have been facing quite a lot of issues especially when it comes to the speed. At the moment, i have a Samsung Galaxy S3 GT-I9300 with the following specs:
Android version 4.1.2,
Baseband version I9300XXEMA5,
Kernel Version 3.0.31-1287119 [email protected] #1 SMP PREEMPT Fri Jun 28 00:40:06 KST 2013
Build Number JZ054J.I9300XXEMF6
I have the following concerns/questions:
1. Why Slow Speed?
2. If a stock s3 is upgradable to 4.3 then why is my current version 4.1.2 even when though i have tried the software upgrade via wifi and Kies. Can it be upgraded through any other means?
3. How can i root it without bricking it
appreciate an expert opinion on this.
musabsohail7 said:
1. Why Slow Speed?
2. If a stock s3 is upgradable to 4.3 then why is my current version 4.1.2 even when though i have tried the software upgrade via wifi and Kies. Can it be upgraded through any other means?
3. How can i root it without bricking it
Click to expand...
Click to collapse
1. don't know, maybe after upgrade and full wipe it is solved (backup data before)
2. maybe in your country an upgrade is not available at the moment. you can also upgrade with odin. download a 4.3 sammy rom and flash it through odin. how to is in the general section - stickies
3. again stickies. alternative: choose a prerooted stock firmware or a custom sammy rom and flash it through a custom recovery (recovery has also to be flashed threough odin e.g. philz)
musabsohail7 said:
Hi Guys,
It's been more than a year since i purchased my Samsung galaxy S3 and almost the same amount of time since i have done any modifications on any android device. I have been facing quite a lot of issues especially when it comes to the speed. At the moment, i have a Samsung Galaxy S3 GT-I9300 with the following specs:
Android version 4.1.2,
Baseband version I9300XXEMA5,
Kernel Version 3.0.31-1287119 [email protected] #1 SMP PREEMPT Fri Jun 28 00:40:06 KST 2013
Build Number JZ054J.I9300XXEMF6
I have the following concerns/questions:
1. Why Slow Speed?
2. If a stock s3 is upgradable to 4.3 then why is my current version 4.1.2 even when though i have tried the software upgrade via wifi and Kies. Can it be upgraded through any other means?
3. How can i root it without bricking it
appreciate an expert opinion on this.
Click to expand...
Click to collapse
1 define slow speed .
2 thats down to your vendor not updating .
3 by following the instructions .
STICKYS
http://forum.xda-developers.com/showthread.php?t=2344125
UNDERSTAND FIRST
http://forum.xda-developers.com/showthread.php?t=2362743
Network IMEI EFS
http://forum.xda-developers.com/showthread.php?t=2393289
Slow speed as in memory is usually used upto 80%, hardly any applications are running in the background, too much lagging, applications take a lot of time to open etc.
This also happens even when i have turned my sync off and have limited the applications to at most 2 process at a time.
Sent from my GT-I9300
Read the forum flash a custom rom .