[Q&A / Help] Kingroot Destroying my Galaxy Tab 4 - Galaxy Tab 4 Q&A, Help & Troubleshooting

Model: Galaxy Tab 4 SM-T230NU
Kernel Version: 3.10.0-6808427, [email protected] #2
Build #: KOT49H.T230NUUEU0APA1
OS: Android 4.4.2 KitKat
So long story short I've had my tablet for years now with absolitely no issue at all whatsoever. It's been fast, effectve, and I've had no complaints for it. I was however bored with some of the useless bloatware on the device so I decided to root and remove some apps. I don't have access to a computer so I took the Kingroot (not Kingoroot) route and it worked fine no issues easy process.
After setting that all up I removed some of the bloatware apps as desired (nothing critical: Netflix, google+, google hangouts, some printer app, and hancom office or something).
After a few hours I opened the Kingroot app after noticing my notifications were being blocked by the app and i sorted that all out but it made me also install the Kingroot Purifier app and started messing with all my stuff killing tasks and everything. I instantly uninstalled it cause I know those apps are bad and I didn't bother with it again. Shortly after I noticed my tablet becoming slower and slower for no reason at all while doing the same things I've done on it for years now.
I looked at my processes and everything to notice my RAM was being used up entirely. I know that unused ram is useless ram with phones and tablets but when I restart my tablet now I start at about 600-900mb of free RAM and it constantly fills up and up and up over a couple hours if I'm lucky until there is less than 15mb of RAM left, everything freezes, apps crash, videos suffer fps drop, and eventually I'm forced to restart it to repeat the process. This happens every hour or two depending on how many apps I open.
Now I've been noticing that when I open my active applications list in Android settings that it ALWAYS shows that there is NOTHING in it using any memory at all which I know is not right because I've had this tablet for years. After all of this I uninstalled Kingroot, deleted any and all files I could find with my file manager, restarted, and now I just have an unrooted tablet with a retardedly annoying ram issue.
I went to sleep last night and woke up to my screen being entirely frozen, and some sort of SD card icon on my notifications I've never seen before and couldnt read due to the whole thing being frozen. I've factory restored and everything and the issue still persists. I feel as if the purifier app from kingroot effected the default android app killer and its ruining my experience with my device that I've had 0 issues with for years until the day I decide I want to remove some bloatware... can someone help me?
I've read all kinds of topics on all kinds of sites and it's all dumb people that don't know how to address issues or answer them. Thanks in advance.

Still having the same issues. It's getting to the point where even my keyboard stops showing up after a while or will pop up and instantly close.

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GT-i9000m has been locking up recently to the point of removing the battery.

It went from extremely rarely doing it to three or four times just the other night in the span of a few hours. I can't reproduce it on command but it happens when I lock the screen and put it in my pocket. Then sometimes when I take it out it is entirely non-responsive, even the power button doesn't work. I have to remove and reinsert the battery.
It could be ADW Launcher or WidgetLocker since those are the only two programs always running, but I was hoping someone else experiences a similar issue. It hasn't happened when I normally lock it yet though, so it could also be the proximity sensor maybe?
Having the same issue (on Bell as well), but not running either of those two apps. Was almost to the point of returning the phone and then installed JM7 and it's been better, although not perfect. Last night it locked up with NoLED displaying an icon, so I've deleted that app to see if that's the issue. It hasn't locked up today, but it did reboot a few hours ago seemingly at random. :shrug:
Your internal sd card might be failing like all the other i9000m phones I see on this forum bricking themselves .
clubtech said:
Your internal sd card might be failing like all the other i9000m phones I see on this forum bricking themselves .
Click to expand...
Click to collapse
Oh, that doesn't sound pleasant at all...
I'm outside of Bell's 30 day exchange period plus I've talked for over 30 minutes, so I'll have to go through Samsung if it completely breaks. On the plus side, a phone from them should be three button recoverable.
Although I can't be without a phone for weeks, I hope it's not the SD card.
Mine Lags like crazy once every few days till the point I need to restart it. Any idea why this is do?
Sent from my GT-I9000 using XDA App
Hold your horses people....
before you jump about the lag, and or one click lag fix and such
first you have to investigate what is running on your phone.
just over the weekend (since XDA was down) i stalled over 400 Apps
my phone slowed down to snail speed, then i ran my Startup Manager software (many to choose from)
I suggest Startup Cleaner 2.0 then uncheck everything, leave only the apps that you want to run during start up
reboot your phone and presto, fast as new!
if you can find version 2.1 of startup manager that one is even better
keep note, start up manager apps are not the same as task killer apps
it only run once during start up, and it helps you easily select what should and should not run during start up, so it doesn't stay in memory after it runs
on the same topic
you should also configure your Task Killer apps to kill everything, and add only the wants you want to be running to the ignore list.
that will keep the phone working smoothly even without the "one click lag fix"
i'm still running stock on my JH2 i9000m
AllGamer said:
Hold your horses people....
before you jump about the lag, and or one click lag fix and such
first you have to investigate what is running on your phone.
just over the weekend (since XDA was down) i stalled over 400 Apps
my phone slowed down to snail speed, then i ran my Startup Manager software (many to choose from)
I suggest Startup Cleaner 2.0 then uncheck everything, leave only the apps that you want to run during start up
reboot your phone and presto, fast as new!
if you can find version 2.1 of startup manager that one is even better
keep note, start up manager apps are not the same as task killer apps
it only run once during start up, and it helps you easily select what should and should not run during start up, so it doesn't stay in memory after it runs
on the same topic
you should also configure your Task Killer apps to kill everything, and add only the wants you want to be running to the ignore list.
that will keep the phone working smoothly even without the "one click lag fix"
i'm still running stock on my JH2 i9000m
Click to expand...
Click to collapse
All gamer has a good sugestion here BUT we are going to get people flaming the fact that Android shouldnt need task managers.....
Ho hum..
TBH in my experience, I have found (after a couple of hard resets) that there appears to be a size limit for installed apps. Once I get over this size limit, I get LAGTASTIC, phone slows to a snails pace, then I remove a few of the apps and I am back at light speed again....
I cant say what the limit is, but I know when I have hit it - I would then uninstall a lame app or two and get back running.
Yes a lot of people "claims" that, but yet you do a search in Android Market, you see LOTS of Task Manager / Killer apps for every phone.
they were not designed for Galaxy S, they were designed long ago for all the other phones that had and still have the same problems of memory management causing lags
Android is not robust enough to survive without one
heck not even Windows 7 or Windows Mobiles phone
I just read that possibly the phone freezes while trying to find a signal. As this problem has only recently started, and I just recently moved into university, and many buildings receive little to no wireless signal, I think it's more than a coincidence. I'll try going to plane mode before entering lecture halls and basements.
Frostshock said:
I just read that possibly the phone freezes while trying to find a signal. As this problem has only recently started, and I just recently moved into university, and many buildings receive little to no wireless signal, I think it's more than a coincidence. I'll try going to plane mode before entering lecture halls and basements.
Click to expand...
Click to collapse
i don't think that is the case with the Galaxy S
however back then my Treo 650 did suffer from that.
if you believe that is the problem then try this
http://forum.xda-developers.com/showpost.php?p=7999389&postcount=28
more cool apps here http://forum.xda-developers.com/showthread.php?p=7999389

Heavy lag

Hi guys,
Has anyone noticed heavy lag and freezing when using the phone. I don't have a lot of apps installed and i have disabled most apps that i don't use and the phone is still giving me issues.
Any advice is appreciated. [emoji4]
I switched from RAZR MAXX HD and this phone is a space rocket in comparison to my old Droid. Have you tried factory restore? Then if it lags - I would try to return it to Moto.
Check CPU utilization. Maybe some app hangs on. I've noticed that noozy (music player) lags like hell when album is over and player remains in notification bar.
emineh17 said:
Hi guys,
Has anyone noticed heavy lag and freezing when using the phone. I don't have a lot of apps installed and i have disabled most apps that i don't use and the phone is still giving me issues.
Any advice is appreciated. [emoji4]
Click to expand...
Click to collapse
I have the same problem, I tried to removing as much as possible automatic start calling but often when I uncheck the receiver this puts me "failed" in Rom Toolbox, I have tried Xposed Auto Boot module, but I do not feel that it works.
But for me, I have a lot of app instaled and my UI is very modified (Nova Launcher, Gravity Box, various Widget), so I know why he lag, but I still find it overheating lot and that's what most do slow.
Hi, I am having same issue. My configs was same as you, @Trinytix, but I had uninstalled all of them because lag issues. And now I continue to have same lag issues. When I use the standard cam for five minutes it become freezy and lag and sometimes I lose some photos. All the time it is burning. Just stops to burn when I leave it without work about 30 minutes. I think the problem is the snapdragon 810 but in other foruns some say that the problems with this processor was fixed.
I've been having similar issues, I got really into theming (using nova prime) the last couple of months and at the end of January the phone started to really lag hard. A couple weeks ago I stopped being able to open any apps other than the phone and google's messenger. I tried to factory reset from settings and could not (device gets stuck un the power down sequence), so I went the recovery mode route. reinstalled a fraction of my apps, put back a much stripped down version of my theme, and things were mostly ok, if a little laggy. However, the phone insisted that there was no SD card (internal or external) despite there being a 64GB card, which would sometimes show up when viewed in settings, some apps (podcast addict) were able to access the internal memory, but others couldn't (cameras, sms, photos, music). Yesterday the keyboard ceased to launch for more than a split second at a time, and would not take any input (you would not believe how infuriating this is unless you've experienced it first hand). In an attempt to regain some functionality I started uninstalling everything that I don't consider vitally important (bus app, podcasts, messenger) couldn't get through more than 1 or 2 at a time because multiple windows would stack telling me processes like "motorola" "android" and "media" had stopped. I did succeed in stripping away all the automation apps and theming apps (tasker, nova, icon packs, etc). I can't even place a phone call on the first try.
Oh and to add insult to injury I have to darned green lines about 0.5cm wide now.
Looks like hw problem or system got corrupted. Try to re-flash whole system but if is hw...

Need Help Finding Root Cause of UI slowdown

Hey all,
So I've had my S8 since launch and I've enjoyed it but I have an issue that I've been trying to pinpoint the cause of for a few weeks now. At a high level, if I reboot the phone in the morning, I can use it all day as I wish and it works perfectly, no slowdown anywhere and good battery life. I plug the phone in at night when I go to sleep and when I wake up I start using it again. Either right after I wake up or over the course of a few hours the phone begins to slow down with things like notification shade/app switcher crawling until I either a) reboot or b) change display resolution. Doing either of these "fixes" it until the next night and then again when I wake up I have the same issues.
I've been trying to figure out what's causing this. I've tried disabling features, uninstalling apps, etc.
One thing I have found is that when I'm having this problem if I force close 'System UI' in App Manager (this is just restarting that process since you can't kill it really) the smoothness comes back but it doesn't last as long as when I either reboot or change resolution.
My theory is that something is conflicting with the Android UI and over time it's causing it to slow down. Rebooting or changing display resolution restarts the Android UI so essentially same thing.
My first question is has anyone seen this behavior where the notification shade/app switcher (native UI not apps) slow down? I know there's at least some people on Reddit with same issue. If you have this issue does FC'ing System UI 'fix' it for you temporarily?
I'm trying to figure out what is running on my phone while I'm sleeping at night which is obviously causing this. Any ideas would be helpful. Oh also when I wake up and I go into app switcher it only shows like 3 cards where before I go to bed it would be like 10+ so something is killing apps at night too. I turned off Google backup for today and will reboot before tonight to see if maybe that's it.
Appreciate your help.
Thanks.
I've had my S8+ since the launch weekend on ATT, always connected to my Gear S3, and connected to my Misfit Ray. I've not noticed any slowdown of the UI. My AOD clock is slow to show the hands if the screen is off when I use the numerical clock AOD, but nothing else observed.
I would guess you've installed (or haven't uninstalled/disabled) some apps that are using a lot of background processes. I removed/disabled the few ATT apps on the device except Call Protect, and I don't use Gmail (resource hog). I actually use very few Google apps, they're just not very well coded, it seems (maybe a "goof off" day every week isn't such a great policy?)
In settings, go to Device maintenance, click on battery, and see if anything strange is going on there under App power monitor.
I've NEVER liked Samsung phones, and I've NEVER been interested in owning one, but I saw the Galaxy Gear S3 and fell in love, and truthfully, I bought the phone as an accessory to the watch, so I'm not an apologist for any shortcomings.
Instead of restarting, go to settings/device maintenance, what's the percentage here? go to optimize, does it help? which apps use the battery most? How much RAM is available. If nothing shows up, you probably would need something like wakelock detector (it needs root) to trace apps usage, especially at night. Also you could try to force stop other apps and see which one is interfering? For example phone is slow, force stop first 10 apps, if not fixed force stop next 10, if fixed, next time force stop one at the time from that batch of tens.
Mines just started doing this the other day. I think I have an idea if the problem, I'm just trying to find proof at this point. I recently downloaded this all to let me see the upload/download speeds if my network in the notification bar. It lets you set the refresh rate, to which I set it to 2 seconds, which I knew regardless would tax my system, I just didn't expect my ui to slow to a crawl.
Delete any Bixby remapping app as well, known to cause many issues including unpredictable lag.

Phone working very slow

Hello,
I own Huawei Nova (CAN0L11C) with EMUI 5 and Android 7. I use it for more than a year now and so far everything looked great.
However, recently I'm very pissed of the productivity of the phone. I am using it mainly not in my country of origin as I work in a different country, but since I'm here I noticed that the phone acts veeery very slow. It becomes a huge issue to open google maps and start navigating with it, and during that time i don't want to speak about multitasking. It's almost impossible to swithc to other apps.
Here are some things that I tried:
I've cleared up disk space.
From time to time i use some apps like NoxCleaner to clean the memory and caches but this fixes the problem temporarily
I did uninstalled apps that i dont use
Nothing helps much. I would appreciate any suggestions to make that phone great again!
you have to factory reset your phone ( 1st you have to save your personal files on Sdcard )
Settings -------> Advanced setting ------> Backup & Reset -------> Factory Data Reset ------> Reset Phone
yeah im kinda trying to avoid that, but thanks for the suggestion. this will be my last option if nothing else works.
Same problem there. Factory reset already done but nothing changes... Some news on the subject ?
dada75000 said:
Same problem there. Factory reset already done but nothing changes... Some news on the subject ?
Click to expand...
Click to collapse
How's your RAM usage? Don't use anti viruses and task killers. They're useless on Android.
You can try LineageOS 14.
Thanks for sure.
I have at least 1Go Ram free. Lags appears on maps, snapchat and screen freeze...
Same problem exists
Same problem happening, any solution for this issue?
I have been experiencing the same slow speeds & lag. The 1st 6 months I was so impressed with the performance of this phone, even comparing it to the performance of the flagships. It was really that good. But, come 8 months down the line, & I'm battling with lag, poor multitasking & screen freezing. Im trying to avoid factory resetting & on top of all this I don't have access to my trusted tools as I can't unlock the bootloader to gain root.
Can somebody look into this please & provide some feedback. I doubt its the processor or hardware causing these issues as the Snapdragon 625 is one of the best in its class & other phones using it aren't experiencing the same problems. I have a feeling its got something to do with the Android system updates of recent. The Google security patches updates. I noticed the speed issues after each update was installed.
FINALLY got to the bottom of my Huawei NOVA's performance issues!!!
Firstly, just want to say, Google & Huawei you are both a bunch of Monkeys !!!
I've owned my fone for two years now, and the latter year the device was just a piece of Sh1t to use, anything like Google Maps, or Assist or 'OK Google' was ridiculous to try and use, ..and everything else was running at like a 3rd performance of what the phone was supposed to be acting like. (hanging & freezing whenever you needed it to do something)
**What really cheesed me off is the amount of times this phone went back to Huawei under Warranty and they didn't even both running a performance test with all their technical know how to identify which process/application was the culprit - & o yes, it was a specific process (Or update rather as the last guy on this Thread assumed it was).
No Android apps either from the play store - like Process identifier apps etc would show any bottleneck in either RAM or CPU when the go slow or hanging was occurring, ..its like it couldn't detect the "layer" of which the issue was occurring on.
So Huawei just kept Factory resetting my phone and sending it back,.then as soon as I load my apps and within a week its all balls again. (And Im wondering if its one of my apps doing it)
To the point: IT IS THE **** GOOGLE APP **** itself, ..or at least the updates that are applied after your fone has completed its factory reset (If you did this) and the next updates come down automatically via Google Play store. (This isn't Google Assist or the Android OS itself,..the listing in the installed apps is just called 'Google' or 'Google LLC' (Im a new user so cant post any images or links yet untill after 10 basic posts first).
Grrr! ..this has been soo frustrating to find this out, ..so I just uninstalled updates for this 'Google App' so its back to the default original the phone came with, & now my phone is absolutely flying again - whilst I still have it loaded with all my apps etc.
So who's to blame here, ..Google for pushing updates which kill the phone OR Huawei should've identified this and responded with either a fix OR that the middle weight Nova can't handle the latest 'Google App' updates.
For the record - I also managed to get my Nova updated to Android Nougat (Which wasn't officially released on Nova UK phones, .. I got the correct firmware/software update etc,... but also since it went from Marshmallow to Nougat it also was crippling slow and therefore I got it reverted back to Android 6 Marshmallow (Now Im wondering if again it was simply that the latest Google App Updates had been applied to Nougat and messed the phone ?? - anyway ..ill keep it on Android 6 for now,..just happy that its responsive again and flying.
I also have to manually press the Microphone on the screen now whenever I want to speak to 'OK Google' ..its not automatic anymore - or rather constantly listening out for me to say 'OK Google' (So this must be applicable to the latest Google App update - but then this Nova just cant handle being on listen the whole time. ... But anyway if that's the price to pay for excellent performance now, ..then I dont mind at all. stuff automatic listening for me to say 'OK Google' Ill control it manually instead.
Its been so long that I forgot how a phone should be, ..its insane how fast my phone is now since uninstalling the frikken Google App)
Dont let this Google App update from your phones original - Disable Android Auto Updates
Hope this Helps you guys. (Actually it will blimming well help)
Peace
sirch777 said:
Grrr! ..this has been soo frustrating to find this out, ..so I just uninstalled updates for this 'Google App' so its back to the default original the phone came with, & now my phone is absolutely flying again - whilst I still have it loaded with all my apps etc.
Peace
Click to expand...
Click to collapse
THANK YOU! <3 I have uninstalled the Google App leaving untouched rest of the google services like "google apps services" or "maps" etc. Now my phone is working as it should be!
Hi guys. Any update on your overall speed?
I factory reset the phone and it helped a bit for a while. Then I disabled the Google App and it worked like a charm... for a while. Now it's incredibly laggy again.
It's really frustrating to use. I would love to install a custom ROM, alas I don't have the bootloader unlock codes

Is there a way to test memory? Lots of weird issues!

I'm not sure if it's my device or an OS update or what. For whatever reason, apps just don't seem to be able to stay running in the background on my OP5. Doesn't matter what kind of app it is, but whenever I to switch to it using the recent's list or pressing the icon, they almost always seem to start up as if they haven't been opened yet. It seems to be getting worse as time goes by. I'm running the lastest OS version and have also factory reset my phone as well as removed a bunch of unused apps and photos.
The thing is my first device didn't have this problem. But I had a hardware issue and my phone was replaced. But about the same time I got my replacement phone, I also had a major OS upgrade occur. So I'm not sure if my replacement device has some sort of defect, or it's just a normal thing that happens now.
Also, on top of apps always starting up from scratch every single time no matter how long it's been since I just used them; now I'm finding apps disappearing from my recently used list! WTF is going on???
I have all optimizations disabled as much as I can, I've deleted a ton of apps and photos to make sure I'm not running out of memory. Yet this phone is still acting very weirdly.
I've searched and used some "memory testers" that I've found in the Play store and they say everything is fine. But I'm not confident they are actually testing the memory or system properly.
Help please!!
ned4spd8874 said:
I'm not sure if it's my device or an OS update or what. For whatever reason, apps just don't seem to be able to stay running in the background on my OP5. Doesn't matter what kind of app it is, but whenever I to switch to it using the recent's list or pressing the icon, they almost always seem to start up as if they haven't been opened yet. It seems to be getting worse as time goes by. I'm running the lastest OS version and have also factory reset my phone as well as removed a bunch of unused apps and photos.
The thing is my first device didn't have this problem. But I had a hardware issue and my phone was replaced. But about the same time I got my replacement phone, I also had a major OS upgrade occur. So I'm not sure if my replacement device has some sort of defect, or it's just a normal thing that happens now.
Also, on top of apps always starting up from scratch every single time no matter how long it's been since I just used them; now I'm finding apps disappearing from my recently used list! WTF is going on???
I have all optimizations disabled as much as I can, I've deleted a ton of apps and photos to make sure I'm not running out of memory. Yet this phone is still acting very weirdly.
I've searched and used some "memory testers" that I've found in the Play store and they say everything is fine. But I'm not confident they are actually testing the memory or system properly.
Help please!!
Click to expand...
Click to collapse
Please read ahead several posts from here https://forum.xda-developers.com/on...xygenos-4-5-2-7-1-1-ota-t3627003/post78727896
strongst said:
Please read ahead several posts from here https://forum.xda-developers.com/on...xygenos-4-5-2-7-1-1-ota-t3627003/post78727896
Click to expand...
Click to collapse
But I have been having these issues for the better part of a year, well before I got the Pie update. Granted, Pie has made it much worse, but it's been going on for a very long time now. And it seems to be getting much worse as time goes by.
ned4spd8874 said:
I'm not sure if it's my device or an OS update or what. For whatever reason, apps just don't seem to be able to stay running in the background on my OP5. Doesn't matter what kind of app it is, but whenever I to switch to it using the recent's list or pressing the icon, they almost always seem to start up as if they haven't been opened yet. It seems to be getting worse as time goes by. I'm running the lastest OS version and have also factory reset my phone as well as removed a bunch of unused apps and photos.
The thing is my first device didn't have this problem. But I had a hardware issue and my phone was replaced. But about the same time I got my replacement phone, I also had a major OS upgrade occur. So I'm not sure if my replacement device has some sort of defect, or it's just a normal thing that happens now.
Also, on top of apps always starting up from scratch every single time no matter how long it's been since I just used them; now I'm finding apps disappearing from my recently used list! WTF is going on???
I have all optimizations disabled as much as I can, I've deleted a ton of apps and photos to make sure I'm not running out of memory. Yet this phone is still acting very weirdly.
I've searched and used some "memory testers" that I've found in the Play store and they say everything is fine. But I'm not confident they are actually testing the memory or system properly.
Help please!!
Click to expand...
Click to collapse
There is no solution for this. Maybe you can try a custom kernel. Apps killed in background is a normal thing for OnePlus.
https://dontkillmyapp.com
You can see this article
This is beyond acceptable now. Apps are being closed while I have them open and are using them! It's different apps, different types of apps, random times, nothing to connect them. Is there anything at all that I can do?

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