Database Develop

[Q]HEAVY Freezing And Lagging !!

Hi everyone,
I have Galaxy S GT-i9000, purchased on November 2010. From last one month i am having lots of problem with my Galaxy S. There is serious lagging and freezing when typing or swapping between home screens or using wake up/sleep button. Even when you slide down the status bar, ending call, going from call log to keypad...every where !!
I have formatted the deice memory twice and a complete internal memory format once, still having a problem after few days of use.
Yesterday itself i have formatted completely but at the moment i restore all my messages, contacts and apps ...it starts lagging
Earlier i had more than 200 apps including heavy 3d games which comes to 15 menu pages but it was not lagging this much, now i have just 4 games like Angry Birds and Fruit Ninja, my current menu pages are 7.
Apart from this there is a common problem with this device since Android 2.1, that is, sometimes it takes approx 15-20 sec to open app like messaging or setting or any other app. I have also attached a pic naming "Common problem when switching or opening new app since Android 2.1.JPG" to show how it looks like.
I have also attached few pics so that you can get good idea.
http://www.mediafire.com/?ee2w988b6wi1q
In my Messaging i have 130 conversations and in 5-6 friends contact i have more than 100 messages. All together more than 2000 messages. So, having so many messages will affect the speed ??? (I am really not sure about this because my previous phone i900 omnia ,a windows phone with 256ram and 800Mhz speed could handle it perfectly)
Best Regards

One more thing...
After Freezing, a message comes on screen "(Galaxy S) - installing native liabraries"

What firmware do you use now?
**DamianGTO Ultimate kernel.1200MHZ. 350MB Ram. 600HZ. all ext2. Steam Rom. Js5**

corefirewire said:
"(Galaxy S) - installing native liabraries"
Click to expand...
Click to collapse
Sounds like poweramp to me...
I can see that once in a week, but no lagg comes with it... But you can try to uninstall, maybe it makes a big difference for you..

Official Firmware : 2.2
Baseband version : I9000DDJP2
Build no : FROYO.DDJP6
Kernel Version : 2.6.32.9
[email protected]#1
@jaapschaap: I am using poweramp for 3 months now but it never gave me this lagging problem, i think there is some different issue !!

Issue solved, it was due to official samsung firmware 2.2. I degraded to 2.1 and it was smooth again, now running custom rom 4.2.
Thank you.
Please close this thread.

Stock vs custom - multitasking

So, i've tried many different roms out there on my SGS. Never got any major issue with flashing or setting them up. Supposedly a custom rom has something improved but there was one think i kept thinking they all fail and i was wondering if anyone else feels the same.
I see random posts all the time telling how great multitasking in android is. But all these roms i keep using try their very best to close just about everything i have running. As far as i can tell, a few seconds after i switch to anything else, my first app gets closed. For example, everytime i'd leave browsing to manage what im listening to or sort out files on some file manager i'd find i needed to open my browser again instead of being there opened and waiting for me to return.
After searching for a while, the best explanation i could find out is to prevent battery drain from opened apps and to keep things smooth by having free ram, which kind of makes sense. Goes against what i read in a paper from google about android multitasking but fair enough.
Except the other day i happened to returned to a froyo stock rom (JS8 with darkcore 1.4) on my SGS and found out this does not happen. Apps stay open for the most part, except when i run something really heavy (like a game). And i dont really notice any performance decrease or extra battery drain from my usual usage.
Granted, i could be just told something along the lines "well dude, just use whatever works for you" and i totally plan on doing so, hence me experimenting, but thats not really my point. What i'm going for is, are custom roms being overzealous? because this really spoils any attempt at multitasking...
Again, this is not a rant of any sort, i was just wondering what are other people's thoughts about it

I'm suffering same problem
i want to have the browser and messenger at the same time
it close one after swetching to the other
i have 80mb free ram

I had the same problems, although lack of multitasking appeared on my stock rom, not a custom... sgs couldn't handle faceboom messager, viber, and a browser at the same time, everytime I switch from my browser to something else - it gets killed, which is frustrating
at the same time I saw how nexus s work, and how much free memory it has, compared to mine, the difference was huge!
I tried cyanogen at first, which was very close to stock nexus s, but it doesn't work good with sgs's camera and crashes once in a while
so eventually I installed JVT with voodoo and uninstalled different samsung stock apps, which gave me about 50mb of additional RAM compared to stock, and there doesn't seem to be any aggressive memory cleaners working, so I can now finally switch between all the apps I need

If you want the best roms for multitasking, go for the final builds of Froyo 2.2.1. They have plenty of free ram and are very smooth. I'd recommend Froyo ZSJPK. You can download it from XDA.

I think it depends on the ram settings in your ROM. The way android works is there are a bunch of system settings on how much ram to keep clear, and if it drops beneath certain values they start killing apps.
It's highly possible these values were tweaked in the custom roms, to improve the perceived smoothness and so on, but at the same time reducing multitasking. There's a trade off between performance and multitasking (guess why apple was so reluctant to add multitasking?)
I'm not really an expert on it, but I'm sure some quick searches around will find out where those values are and how to change them.. some rom/app probably even allows you to tweak them to your liking.

All Gingerbread roms do the same, closing apps after moving away from this, don't know why, but froyo didn't do this and ginger does.

I used to be like TS, clearing RAM because it might let the phone run smoother. After getting more exposed to Android, I realised that it could be logical to keep your apps in RAM instead of doing a cold boot again, meaning to close an app, open, close and open again, making it taxing on the phone.
So I tried to use up as much RAM as possible and it works just fine, it feels good. I believe the problem you have stated is that in your ROM, the task manager has instructions to clear the RAM once it hits a certain threshold. When it does, it starts to clear apps in different category, starting from what is known as empty apps, which are generally just apps you use and are not important to the android OS or rather independent from the OS.
In the new Samsung ROM, the threshold is set to 40MB, and it is working great for me. You can go to the android market and download "Galaxy Tuner" to set the threshold to a value you feel comfortable with. To multitask better, set the threshold as low as possible.

MaoJie said:
I used to be like TS, clearing RAM because it might let the phone run smoother. After getting more exposed to Android, I realised that it could be logical to keep your apps in RAM instead of doing a cold boot again, meaning to close an app, open, close and open again, making it taxing on the phone.
So I tried to use up as much RAM as possible and it works just fine, it feels good. I believe the problem you have stated is that in your ROM, the task manager has instructions to clear the RAM once it hits a certain threshold. When it does, it starts to clear apps in different category, starting from what is known as empty apps, which are generally just apps you use and are not important to the android OS or rather independent from the OS.
In the new Samsung ROM, the threshold is set to 40MB, and it is working great for me. You can go to the android market and download "Galaxy Tuner" to set the threshold to a value you feel comfortable with. To multitask better, set the threshold as low as possible.
Click to expand...
Click to collapse
ok i downloaded galaxy tuner but idk how to change threshold

Apps Performance issue

Hello evry one. I have problem in my captivate and other models of android. I installed almost every custom rom but problem of loading apps fast still exist. What i mean is.. that when i on my mobile, so first time apps like calender, messenging etc take a little time to load. than when i close the app and open again, it loads very quickly. When mobile goes to standby for more than 10 mins, and when i on it, it again take little time to load apps, and widget menu etc.
Why it is like that ??? and whats the solution to always load the apps quickly

majidshahab091 said:
Hello evry one. I have problem in my captivate and other models of android. I installed almost every custom rom but problem of loading apps fast still exist. What i mean is.. that when i on my mobile, so first time apps like calender, messenging etc take a little time to load. than when i close the app and open again, it loads very quickly. When mobile goes to standby for more than 10 mins, and when i on it, it again take little time to load apps, and widget menu etc.
Why it is like that ??? and whats the solution to always load the apps quickly
Click to expand...
Click to collapse
It's how Android manages memory. It keeps your apps in memory until it needs to free some, at which point it starts to close apps to free some up. If they're already in memory they open fast because they're already open. If they aren't, they open more slowly.
There's not a ton you can do, really. Some 3rd party sms apps let you lock the app in memory, but I honestly never checked to see if it really works or not.
Personally, I restart my phone every morning when I wake up. This frees up the most memory and allows your phone to leave more apps open before closing them.

make sure you arent running any ****ty task killers.

You could flash an I9000 ROM/kernel that let's you tweak the lmk. (low memory killer)
Talon and semaphore both offer that option.
The trick is to make it weak enough to not kill the apps you want, but aggressive enough to not allow to run out of ram completely.
both of those kernels also have a "bigmem" version that gives the user a bit more ram at the cost of being able to record video in 720p.

studacris said:
You could flash an I9000 ROM/kernel that let's you tweak the lmk. (low memory killer)
Talon and semaphore both offer that option.
The trick is to make it weak enough to not kill the apps you want, but aggressive enough to not allow to run out of ram completely.
both of those kernels also have a "bigmem" version that gives the user a bit more ram at the cost of being able to record video in 720p.
Click to expand...
Click to collapse
I like ur answrr. But can u pls guide me abt lmk. I like this idea but never use such tweaks. I m using talon kernel right now and rom is much fast. But have same prb of apps loading

In the app memory freak, that installed with the kernel, there is a slider for you to adjust,
lower number the more aggressive the lmk but the better the overall performance.
Higher number is less aggressive and is better for multitasking, but can be a bit slower.

studacris said:
In the app memory freak, that installed with the kernel, there is a slider for you to adjust,
lower number the more aggressive the lmk but the better the overall performance.
Higher number is less aggressive and is better for multitasking, but can be a bit slower.
Click to expand...
Click to collapse
Where to find app memory freak ? i haven't seen any option in CWM

Should have been installed when you flashed talon. If not, it should be linked in the talon op.

Nexus 7 Grouper Custom ROM Memory Usage Comparrison

Hi all
I very much doubt this post belongs here, but since i am a new member , have no chice but to put it here.
I have recently accidentally purchased a nexus7 (grouper) and decided to try some of the custom roms available, in the end i tried most of them.
Here are my comparison results.
As with all things putting an "order" on the roms is subjective, the "best" rom is the one that works for the individual,with that individuals particular needs and wants.
As an embedded design engineer i am obsessed with speed and efficiency, memory usage, putting as much data on the screen as possible, then finally compatibility and lack of bugs ( in that order ), my results are biased by that order.
Disclaimer........
1) Ok i know that android is not exactly ideal if looking for an efficient well written os ( who the F came up with the idea of running everything in a VM!!! a minimal linux system will run in 85 mb ram with a full xserver, android STARTS at 400mb+, sitting there doing nothing !!!, thats near my cut down windows7 running on an i7 ) but before a decent linux distro is ported to full touch am stuck with it
2) For the N7 the requirement to change the DPI is essential, it is VERY stupid that the os does not check and change this automatically, otherwise its like having your 1920x1080 monitor stuck on 1200x600 permanently, very stupid !!! So am assuming the roms without this facility will function at 160dpi correctly, i have not been able to check this for every rom
All roms were flashed by TWR ( latest ), wipe of cache, dcache, factory reset, system
Memory was checked by settings>apps>running , immediately after first boot, then after a clean reboot, then after a cache,dcache wipe and clean reboot
IMPORTANT NOTE.....
Google apps ( gapps)...... in terms of memory usage gapps is the worst peice of #%%#%%$#$% sh$%^%$%t bloatware i have ever encountered in my os experience ( and given that i spend most of my time in windows, that saying something ).
On any of the roms i have tried flashing gapps adds at LEAST 150mb of unneeded memory usage, and depending on the rom that can go up to 250mb. Even using a minimal gapps with only phonesky,framework,login and setup, still produces a significant 50+mb hit, unfortunately in many cases some of gapps is essential, and some os functions are broken without at least the framework.
This situation seems unacceptable to me, all the roms should function correctly without gapps, and without the bloat, if some dev does not address the situation i will.
1) Prime Grouper D03-06
Tablet ui...... yes
DPI changer ...yes
Size custom nav bar ....yes
Speed....... good
Response ... good
This is first on the list for 1 good reason, memory usage!!!
Before flashing any kind of gapps
First reboot 360mb
Second reboot 320mb
Cache wipe reboot 270mb
Subsequent reboots 266mb ( stable )
Obviously team Vanier know their sh**t, their os is running in nearly HALF the memory space of other roms , and on the whole with few bugs, but whats really impressive is the memory usage is incredibly stable for a android os, zero memory leaks, leave the device at 302 mb ( say you opened an app and it was cached etc ) for 24 hours check again and lo and behold its still roughly 320mb ( obviously internal processes are moving this number a little but only by <>5mb ), this is not the case with stock rom or many other custom roms.
Everything is not all roses though, using prime without flashing gapps at all, exposes quite a few bugs, notification panel does not work at all, clock settings is broken, a few apps fail ( mx player fails for a start ) and others.
Flashing a super minimal gapps, fixes most of the issues, notifications are back, a lock screen turns up, all the settings appear fixed, BUT it also knocks out vanires keybord and totally ruins the memory handling
After flashing "micro" gapps ( and going through setup, adding valid account etc )
First reboot 430mb
Second reboot 360mb
Cache wipe reboot 320mb
Subsequent reboots 360mb ( NOT STABLE, can vary up to 400mb+ with time )
Obviously would love to see PRIME fix the outstanding bugs, and produce a custom set of gapps apk's that dont screw this fine rom.
2) Smooth ROM v5
Tablet ui...... yes
DPI changer ...no
Size custom nav bar ....yes
Speed....... good
Response ... excellent ( the best )
Gapps are included
First reboot 470mb
Second reboot 4200mb
Cache wipe reboot 400mb
Subsiquent reboots 440mb ( NOT STABLE can go 500mb+ )
This rom is second due to a totall lack of bugs, after much mucking around i can not find a single setting or feature that does not work correctly, plus the UI is very very responsive, the best of all i have tried. It would be top but for the lack of a DPI change option and the fact that memory usage is nearly double that of PRIME.
will post the other 20 odd results later

What's more interesting is that identical apps on the galaxy S3 take up 2-3 times more memory. 1GB is fine on the N7 but you have to do a lot of fiddling to get the S3 running with 1GB. Must be down to the Tegra architecture. Smooth 5 runs great on the N7 (especially with greenify app)
Sent from my Nexus 7 using XDA Premium HD app

3) Cookies_Cream-1.3.1
Tablet ui...... yes ( built in as standard )
DPI changer ...yes ( 160 dpi native )
Size custom nav bar ....yes
Speed....... ok
Response ... ok
Before Gapps
First reboot 560mb
Second reboot 560mb
Cache wipe reboot 560mb
Subsequent reboots 560mb ( stable )
Although a memory hungry beast this rom is optimised for the n7 resolution AS STANDARD, you get full true tablet ui, AND with the PARANOID ANDROID framework, it is ultimately compatible with any app at any resolution, and best of all it all works!! no bugs that i can see, although memory use is very high at least it is quite stable before gapps.
If you want the full tablet experience out of the box then consider this.
I have not tried a memory test after gapps, 560 was too high for me without gapps let alone with
4) BeatMod_CrystalClear_v2.3.zip
Tablet ui...... yes
DPI changer ...no
Size custom nav bar ....yes
Speed....... good
Response ... good
Gapps are included
First reboot 480mb
Second reboot 4100mb
Cache wipe reboot 400mb
Subsequent reboots 440mb ( NOT STABLE can go 500mb+ )
being pure CM10 this one is very different in style to the AOKP based roms, but is almost identical to smooth rom in terms of memory usage, although less responsive, on the up side is packed full os sound enhancing mods and an upgraded bravia engine for video
the rest are in no particular order

gsw5700 said:
What's more interesting is that identical apps on the galaxy S3 take up 2-3 times more memory. 1GB is fine on the N7 but you have to do a lot of fiddling to get the S3 running with 1GB. Must be down to the Tegra architecture. Smooth 5 runs great on the N7 (especially with greenify app)
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
jesus am wandering how 512k devices ever ran !!!, android MUST have gotten a lot more bloaty since the 2.x days, otherwise nothing would have worked !!!

jubei_mitsuyoshi said:
jesus am wandering how 512k devices ever ran !!!, android MUST have gotten a lot more bloaty since the 2.x days, otherwise nothing would have worked !!!
Click to expand...
Click to collapse
You got it! There's a huge difference between the gingerbread days and now, i remember when my droid eris would use 200 megs of ram for the OS, now.....its a lot more. Why do you think new devices are getting 2gigs of ram, I'm guessing key lime pie will only use more and more memory to give us a better experience
Sent from my Nexus 7 using xda app-developers app

Triscuit said:
You got it! There's a huge difference between the gingerbread days and now, i remember when my droid eris would use 200 megs of ram for the OS, now.....its a lot more. Why do you think new devices are getting 2gigs of ram, I'm guessing key lime pie will only use more and more memory to give us a better experience
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Hmm have to take your word on better experience having just come to android.
PRIME runs at 266mb without gapps, thats a bloody good number for android, just needs the bugs fixed and a minimal/mico ( just playstore functionality, without the paid service ) gapps integrated so all the settings etc function, then we are talking as good as it gets with android.
Generally if you want something doing do it yourself but in this case am in the middle of becoming proficient in c/c++ ( again , its amazing when buried in hardware, pcb design, spice sims, matlab etc etc that one can just forget how to code, i always thought it would be like riding a bike WRONG! ) so learning java from scratch is out for at least 6 months, am very much in hope that PRIME does it for me ,

Before you go any further you should define exactly what you mean by "memory usage".
I challenge you to correlate your "memory usage" statistic to anything you can find in /proc/meminfo.
Go ahead, give it a try.
In any modern OS - including Android - 100% of DRAM is in use. The only thing which remains is some quibbling about whether you should give up file cache space for process memory space or kernel private memory, and the answer to those questions always depend on the nature of the workload.
The whole of dalvik is built on top of native shared libraries that are substantially smaller than the totality of shared libraries present in (let's say) a recent Linux distro. They can be memory mapped in copy-on-write or read-only fashion to a large number of process spaces, and so in fact it is a strategy of the "system_server" process to preload most of them. That way new activities spring to life quickly, rather than being required to demand-load and link everything from scratch.
Bottom line: it is an intentional strategy of android to "use up memory" right from the get-go. Most of that "used memory" is shared libraries that are mapped into activities as they come and go.
So, would I want to run engineering applications that require 800 MB of heap space on an android OS tablet with 1 GB of RAM? The answer is clearly "no" in that case, but mostly because Android devices are not targeted for that kind of work.
For comparison, BTW, my Win 7 x64 box that is nearly bare of applications (I only use it as a VM host) needs 1 GB of committed page space to sit there and do nothing. Android isn't doing so badly in comparison.
cheers

bftb0 said:
Before you go any further you should define exactly what you mean by "memory usage".
I challenge you to correlate your "memory usage" statistic to anything you can find in /proc/meminfo.
Go ahead, give it a try.
In any modern OS - including Android - 100% of DRAM is in use. The only thing which remains is some quibbling about whether you should give up file cache space for process memory space or kernel private memory, and the answer to those questions always depend on the nature of the workload.
The whole of dalvik is built on top of native shared libraries that are substantially smaller than the totality of shared libraries present in (let's say) a recent Linux distro. They can be memory mapped in copy-on-write or read-only fashion to a large number of process spaces, and so in fact it is a strategy of the "system_server" process to preload most of them. That way new activities spring to life quickly, rather than being required to demand-load and link everything from scratch.
Bottom line: it is an intentional strategy of android to "use up memory" right from the get-go. Most of that "used memory" is shared libraries that are mapped into activities as they come and go.
So, would I want to run engineering applications that require 800 MB of heap space on an android OS tablet with 1 GB of RAM? The answer is clearly "no" in that case, but mostly because Android devices are not targeted for that kind of work.
For comparison, BTW, my Win 7 x64 box that is nearly bare of applications (I only use it as a VM host) needs 1 GB of committed page space to sit there and do nothing. Android isn't doing so badly in comparison.
cheers
Click to expand...
Click to collapse
Hmmm
Well lets start with the last first, i run a heavily customized ( rt7 lite, wintoolkit, buclean ) windows 7 ( EE edition which i mastered ) on a asus g15w i7 8 gb geforce 470 , with all drivers in, on full aero , <>560mb mem usage for the system, can go down to 500 if you disable the nvidia startups and services but you lose the nvidia controll panel.
I totally take the point that memory usage in modern multi-core systems is friggin complex, obviously these memory stats are not supposed to be definitive in any way, but given all the tests are run on the same hardware with the same inbuilt prog they can be used as COMPARATIVE results, ie you can say rom x is more efficient than rom y given they do the same thing but with different memory results.
By definition any code abstraction away from 1's and zeros makes that code less efficient, an entire graphical os can fit into 1.8mb if written in x86 ASM, same code becomes <>20mb in C, 25mb in C++, 80mb+ in vm bytecode, the same pattern can be found in mem usage.
Any virtual machine no matter how clever ( and dalvik is bloody clever ) is a glorified interpreter, hence slower ( by a few factors ) than c/c++, which is itself slower by a few factors than ASM.
My opinion on caching is DONT, unless someone comes up with a really psychic piece of code that can for real predict the chaotic needs of the average human, all caching algorithms are just guessing, and do i trust the system to free up all that memory in time when something ( as you say ) calls up a massive heap or worst maloc's it direct, errrr no.
But thats just an opinion, am totally willing to recant if i see evidence and accurate benchmarks to the contrary ( and you seem to know your stuff, so if im way of the mark please enlighten me ! )

Bad development :-- Android 4.3

How many people Don't like android 4.3 please tell to Sony
1.Consuming too much power and affecting battery life.
2.Scrolling is very noisy so need too much repolish user interface.Project butter isn't works. Every application is not smooth e.g - in clock move from world clock to timer breaks, home screen, gallery, slide show is bad.
3.Some applications run in background always live in notification bar eg - Uc Web background download always shows in notification bar "Uc Web is running tap to more information "
4. Bugs with Blutooth, wifi, nfc
5. With this operating system applications run problematic not perfectly like chrome
6. Old camera UI was excellent - excellent..look and functionality.New UI looks very very bad and decreased quality.
7.Problem with video recording.
8. New Keyboard app is very very bad We want old keyboard.
9. Ram management is bad.

jagratjoshi said:
How many people Don't like android 4.3 please tell to Sony
1.Consuming too much power and affecting battery life.
2.Scrolling is very noisy so need too much repolish user interface.Project butter isn't works. Every application is not smooth e.g - in clock move from world clock to timer breaks, home screen, gallery, slide show is bad.
3.Some applications run in background always live in notification bar eg - Uc Web background download always shows in notification bar "Uc Web is running tap to more information "
4. Bugs with Blutooth, wifi, nfc
5. With this operating system applications run problematic not perfectly like chrome
6. Old camera UI was excellent - excellent..look and functionality.New UI looks very very bad and decreased quality.
7.Problem with video recording.
8. New Keyboard app is very very bad We want old keyboard.
9. Ram management is bad.
Click to expand...
Click to collapse
Dude..!! Y don't u just downgrade it and forget it..
None of your above stated problems is being faced (atleast by me)
A cure for you ---- To fix it, Read it.. Just don't Post it, to Blame it.. Got it?
De-bloat/ Kill apps u don't use or never ever use. Battery life on 4.3 is insane runs all day for me with 20-25% drainage (average call, texts, emails on exchange) no issues at all. (Root it / Calibrate the battery for actual reading). Project butter does what it is suppose to. No lags at all. U need Lag Fix. Use Adblocker kill stupid apps delete system apps (only if u r aware of what u r deleting).
No bugs at all with Bluetooth/ wifi or NFC I use all of them in daily life and works like a charm. In other words now I can skype on wifi instead on 4g LTE (on my BB Q10) on 4.2.2 I faced too many problems. Chrome was recently updated and stable now.
For the rest release your stress and go for a different device.
I believe in -
"If u own it, u can control it"
Good Luck!

shysparrow said:
Dude..!! Y don't u just downgrade it and forget it..
For your kind information I wanna tell you that according Sony new policy customer service can't downgrade os and I now want to root my phone.
None of your above stated problems is being faced (atleast by
A cure for you ---- To fix it, Read it.. Just don't Post it, to Blame it.. Got it?
De-bloat/ Kill apps u don't use or never ever use. Battery life on 4.3 is insane runs all day for me with 20-25% drainage (average call, texts, emails on exchange) no issues at all. (Root it / Calibrate the battery for actual reading). Project butter does what it is suppose to. No lags at all. U need Lag Fix. Use Adblocker kill stupid apps delete system apps (only if u r aware of what u r deleting).
No bugs at all with Bluetooth/ wifi or NFC I use all of them in daily life and works like a charm. In other words now I can skype on wifi instead on 4g LTE (on my BB Q10) on 4.2.2 I faced too many problems. Chrome was recently updated and stable now.
For the rest release your stress and go for a different device.
I believe in -
"If u own it, u can control it"
Good Luck!
Click to expand...
Click to collapse
Hey dude I for your kind information I wanna tell you that according Sony new policy a phone can't be downgrade even on Sony care and I not want root it

Use flash tool to downgrade it, u won't need to root it.
Sent from my C5502 using xda app-developers app

Before going back to 4.2 try to flash again 4.3 because you are the only one who experience problems.