sm t337a suddenly started freezing ALOT, touchwiz - Galaxy Tab 4 Q&A, Help & Troubleshooting

I have an At&t (though no at&t mobile service currently) Samsung tab 4 8inch. In the last few days it has started freezing SEVERAL times a day. it doesnot matter what app, its likely to freeze on any of them. I would say it probably happens most when Im backing out/exiting an app. When it freezes I can stilll shut screen off but when I turn it back on I am just where it froze -not lock screen, it wont acknowledge plugging charger in, and cant click restart. Touchwiz has stopped message may or may not come up, but I cannot click on it even if it does. The ONLY way I can shut it down then is down vol +power for about 15seconds. Then it restarts and may do it 5 minutes later or 5hours later.
It just started this suddenly. I also had not just installed anything.
If a custom ROM or something would fix it, I wouldnt mind doing that if someone could possibly give me the link(s) to 1 that works for this model and links to how to do so/what I need.
I dont know if it is related or not, but about 3 or 4 days before this started, by battery life & battery charging went suddenly TOTALLY to hell.
Please help me fix this irritating &aggravating problem. Thank you very much for your time &assistance!

There are no custom ROMs for the SM-T337A unfortunately. Is your tablet on KitKat or Lollipop and are you rooted?
You should back up your internal storage and then factory reset and wipe cache in stock recovery. If you are rooted, you should remove system apps that you don't need with titanium backup or something similar. If you are on KitKat you might want to consider either updating to lollipop or factory resetting and reflashing the stock KitKat firmware with Odin.

No im not rooted. However i would like to, but didnt know there was a method of rooting the t337a.
I cant seem to fins out how to find whether its lollipop or kitkat or what?

gdownloads said:
I cant seem to fins out how to find whether its lollipop or kitkat or what?
Click to expand...
Click to collapse
Settings > About device > Android version. If it says 4.4.2 it's kitkat, if it says 5.1.1 it's lollipop

Thanks for the help.
Yes its kitkat then because it says 4.4.2 . I think 1st I'll go ahead and search how to update it to Lollipop then go from there... Does that sound like a wise decision to you??

STOOPID Question: I went to the posts at bottom of your posts (granted, I didnt go thru all 59 pages, lol) but I have a brain-fart question... would I try to root and then update to lollipop or vice-versa??

I have found temp root for lollipop. Just look in the general section. As you wouldn't be able to ota lollipop while rooted anyways.

Related

Please help! System process not responding

Hello all. I've had a Verizon note 3 since release. I've been running HyperDrive 6 on 4.3 since I got the phone. I've had no reason to update at all, not to mention when I first got it I didn't understand knox so now my knox counter is 0x1. Its been great and themed and untouched for at least 3 months. Today I noticed everytime I opened an app it was upside down, and flipping my phone didn't help. So, I rebooted it.
Ever since that reboot about 3 hours ago I have been unable to get it to reboot fully. It boots up, gets to the lock screen and freezes for about 10 seconds then pops an error saying System process not responding "wait or close". I've done both options with no luck. I've booted into safestrap, cleared cache, recovered to my most recent (April) recovery, booted into stock rom slot, EVERYTHING ends in system process freezing and rebooting.
Why is it doing this out of nowhere? How do I make it stop? What is even wrong? I need this phone for work and in the 3 hours without it have already gotten crap via email for being unresponsive to phone calls.
I have zero idea how to update to KK with my knox counter voided. I'd prefer not to anyway since 4.3 HD6.0 worked great and was themed to my liking.
But I need this phone working, so I'm taking ideas.
Thanks for your help.
Have you tried using Odin if not might wanna start with that use a computer download the stock firmware tar file use Odin to flash the phone back to stock. That's what I would do I don't know what's wrong with you phone but that might help undo what was done.
burkechrs1 said:
Hello all. I've had a Verizon note 3 since release. I've been running HyperDrive 6 on 4.3 since I got the phone. I've had no reason to update at all, not to mention when I first got it I didn't understand knox so now my knox counter is 0x1. Its been great and themed and untouched for at least 3 months. Today I noticed everytime I opened an app it was upside down, and flipping my phone didn't help. So, I rebooted it.
Ever since that reboot about 3 hours ago I have been unable to get it to reboot fully. It boots up, gets to the lock screen and freezes for about 10 seconds then pops an error saying System process not responding "wait or close". I've done both options with no luck. I've booted into safestrap, cleared cache, recovered to my most recent (April) recovery, booted into stock rom slot, EVERYTHING ends in system process freezing and rebooting.
Why is it doing this out of nowhere? How do I make it stop? What is even wrong? I need this phone for work and in the 3 hours without it have already gotten crap via email for being unresponsive to phone calls.
I have zero idea how to update to KK with my knox counter voided. I'd prefer not to anyway since 4.3 HD6.0 worked great and was themed to my liking.
But I need this phone working, so I'm taking ideas.
Thanks for your help.
Click to expand...
Click to collapse
Sorry i got no idea what you can do, maybe oding back? But this is not the correct place to put a question... I am kind of sure you know that and if you didn't then read the forum rules.
Awesome ROM bro, I'll give it a try!!

[Q] Where to go from MJE?

Have MJE and had stopped OTAs. Would like to move forward to lollipop on this phone. 2 different questions:
1. Would I be able to install a lollipop ROM from MJE or is it already locked down with no options
2. Phone is in "custom" mode. Can I just reenable OTA updates and let it receive updates OTA without bricking or does the knox need reset first? Not worried about warranty issues.
Please spare the flames, I dont know what I am doing much but can follow instructions and I am just looking for a little help. Dont want to blow my phone out and not be able to do anything with it. Thanks!
mwinschel said:
Have MJE and had stopped OTAs. Would like to move forward to lollipop on this phone. 2 different questions:
1. Would I be able to install a lollipop ROM from MJE or is it already locked down with no options
2. Phone is in "custom" mode. Can I just reenable OTA updates and let it receive updates OTA without bricking or does the knox need reset first? Not worried about warranty issues.
Please spare the flames, I dont know what I am doing much but can follow instructions and I am just looking for a little help. Dont want to blow my phone out and not be able to do anything with it. Thanks!
Click to expand...
Click to collapse
Im in the same boat with you. Im still on 4.3/MJE/Stock/Rooted. I rooted with RootMaster when i got the phone over a year ago and disabled OTA updates. Its been an awesome phone but recently been having glitches (screen flickers randomly when on and auto adjust brightness is turned off and google maps cannot find my location, the GPS icon never comes on anymore, other mapping apps still work fine) and ive had to disable my google play services from killing my battery. Also my music has been stuttering on poweramp (not sure if it is just a app issue). Another thing Ive noticed is when i restart my phone its been doing a double bootloop, it gets to the launcher screen then immediatly reboots, but then fully boots up the second time.
Any suggestions anyone? I want to keep root and dont mind stock. Go launcher gives me most of the customization i need, really only need root for AdAway (which doesnt work so well anymore), Gemini App Manager- so i can keep certain apps from startup upon boot, SD speed increase (which im not really sure actually does anything), and of coarse TITANIUM.
Do i need to do an ODIN flash or TWRP or CWM? Can i just hit the factory reset and keep my root? Maybe flash up to 4.4.2? I keep seeing that 4.4.4 and higher cant be rooted unless im mistaken.
Any direction from someone knowledgeable would be greatly appreciated.

[Q] Reboots after Lollipop

Verizon Note 3 here, I received the Lollipop ota today and thought no harm in taking it as I was already stuck without root on 4.4.4.
It worked ok for the first couple minutes, then a reboot, then same thing, about 5 minutes and a reboot. Sometimes ~2 minutes, seems using it in any situation made the reboots happen. I did a factory reset thinking that would clear things up. Unfortunately now it is even worse, as it's rebooting anywhere from the first touch to the screen, to about 15 seconds of activity, literally dozens of reboots.
I downloaded the update on my pc and installed via Odin hoping that the ota was just corrupted or some bad luck like that. Nothing changed at all.
It will idle after booting just fine, I just can't do much of anything, every touch of the screen feels like a roll of the dice. Every few reboots or so I can make it to settings maybe but haven't been able to actually change much of anything, not that it would seem to matter here.
I've flashed via Odin twice, cleared the cashe many times, factory reset 3 or 4 times. Am I screwed here? What else to try?
*UPDATE* I flashed back to 4.4.4 with Odin and no more issues. It appears that my device alone is completely incompatible with the new firmware.
I should also note that I tried airplane mode, safe mode, and removing the sd card with no improvements.
After hours of messing with this thing and nearly giving up, not half an hour after I post here for help, I seem to have found a solution, although hopefully not a permanent one. The problem was happening when I would touch the screen, not scrolling ever, but making selections. On a whim I turned off sound and bam, no crashes.
I would still love it if someone had some insight about this problem, or better yet a solution.
I'm not sure yet if it is just the keypress sound that is killing it, or all sounds. I never did have any issues with the stock keyboard clicks now that I think of it, only the menu press sound. In any case it's not every time it made the sound, just half the time or so. Anything anybody could add to this would be appreciated.
*Edit* Not a solution, but it did help.
Well it's not as stable as I'd hoped. More like before the first factory reset now, but still not good at all. The various sounds definitely trigger crashes quickly(menu options, volume pings, mp3 songs from sd card), but regular silenced menu presses do sometimes as well still. Phone also bootloops several times often before it can get booted stable and 100% always crashes immediately if I try to unlock the screen in the first 5-10 seconds after booting up. Not sure if I'll be able to call or text as it's too late to test that atm. I'll update tomorrow, any insight appreciated.
I would say a bad download but I don't remember if ODIN checks MD5 sums (pretty sure it does). I would do a full wipe and reflash the stock image with odin
I am 100% stock not rooted never been rooted 5.0 vzw and I have had a couple of reboots. Never ever had one on this phone before. My old note 3 was rooted but I got this replacement after the root exploits had all been closed.
ehh not all have been closed
What is the root exploit for Verizon Note 3 with 5.0?
recDNA said:
What is the root exploit for Verizon Note 3 with 5.0?
Click to expand...
Click to collapse
None at the current time but CVE-2014-8609 seems like it could be some use
I spoke too soon when I said the phone was usable now. At best 5 minutes of light use as anything seems to crash it now. I did get a fresh image and used it with Odin with exactly the same result which makes me think its my phones hardware or something. Just seems crazy that it was working just fine before the update. The reason I pushed to 4.4.4 and lost root is because my phone suddenly started an issue where it would crash when making or receiving calls. It wasn't caused by any new apps or anything, just out of nowhere. I tried everything then updated as a last resort, carelessly I went to 4.4.4 instead of staying at 4.4.2 and lost chance of root, but it solved the problem I was having. I wonder if the issue is related somehow.
I was able to odin back to 4.4.4 and it's working fine so far, I assumed that you would not be able to revert back like the last ota and just tried it as a nothing to lose last effort. This is very important news to anybody that is having major issues with 5.0. Maybe, just maybe I'll try it again if they make an update patch for reported issues.
But for now, 4.4.4 it is for me.
VZW Note 3 update to Lollipop
I just finished the Lollipop update and my phone is working great for the past 30 minutes. Seems a little slower then usual but have had no issues besides my phone locking up after downloading the update, may have been due to my phone running down to 14%, but after removing the battery for 20 secs and putting it back on, phone came back on, I plugged into charger and started the update. Will post later if I have any issues.
I have been trying unsuccessfully through odin to downgrade but it keeps failing in odin, I downloaded the official firmware from sammobile.
Just curious if u r tried reinstalling newer odin? Try different USB port and cable. At this point maybe even try different pc if u have access to 1

[Q] Safest way to load 5.0 on my rooted Note 4?

Hi guys,
Have just spent the last couple of hours trying to research this but still not quite sure what's the best (safest!!) way of upgrading to lollipop on my SM-910G. I am rooted and currently on 4.4.4 and when I try to do an OTA update, I get the msg "The operating system has been modified in an unauthorised way.... etc etc"
When I connect via Kies, I get a pop up msg telling me that lollipop is available however when I try to update it tells me that I have to be unrooted. I read an article where some guy messed up his rooted S4 while trying to update via Kies. Can't afford for that to happen on my phone, I've backed up all my apps and data via Titanium Backup but now need to know what the safest way is to upgrade and keep all my settings etc.
I've downloaded the right 5.0 ROM (N910GDTU1BOC5_N910GXSA1BOC5_XSA.zip) for my model - am I correct to say that if I flash via Odin, I will lose all my apps and settings (and root)?
If I want to update and keep all my settings, am I safe to unroot via SuperSU, then update via Kies? I've read about how unrooting via SuperSU isn't really a complete unroot?
At the end of the day unless I'm 100% certain I will probably stay on 4.4.4 since there has been some horror stories with battery drain and stuff on 5.0
Has anyone been in a similar situation?
highon2str said:
Hi guys,
Have just spent the last couple of hours trying to research this but still not quite sure what's the best (safest!!) way of upgrading to lollipop on my SM-910G. I am rooted and currently on 4.4.4 and when I try to do an OTA update, I get the msg "The operating system has been modified in an unauthorised way.... etc etc"
When I connect via Kies, I get a pop up msg telling me that lollipop is available however when I try to update it tells me that I have to be unrooted. I read an article where some guy messed up his rooted S4 while trying to update via Kies. Can't afford for that to happen on my phone, I've backed up all my apps and data via Titanium Backup but now need to know what the safest way is to upgrade and keep all my settings etc.
I've downloaded the right 5.0 ROM (N910GDTU1BOC5_N910GXSA1BOC5_XSA.zip) for my model - am I correct to say that if I flash via Odin, I will lose all my apps and settings (and root)?
If I want to update and keep all my settings, am I safe to unroot via SuperSU, then update via Kies? I've read about how unrooting via SuperSU isn't really a complete unroot?
At the end of the day unless I'm 100% certain I will probably stay on 4.4.4 since there has been some horror stories with battery drain and stuff on 5.0
Click to expand...
Click to collapse
highon2str said:
Hi guys,
Have just spent the last couple of hours trying to research this but still not quite sure what's the best (safest!!) way of upgrading to lollipop on my SM-910G. I am rooted and currently on 4.4.4 and when I try to do an OTA update, I get the msg "The operating system has been modified in an unauthorised way.... etc etc"
When I connect via Kies, I get a pop up msg telling me that lollipop is available however when I try to update it tells me that I have to be unrooted. I read an article where some guy messed up his rooted S4 while trying to update via Kies. Can't afford for that to happen on my phone, I've backed up all my apps and data via Titanium Backup but now need to know what the safest way is to upgrade and keep all my settings etc.
I've downloaded the right 5.0 ROM (N910GDTU1BOC5_N910GXSA1BOC5_XSA.zip) for my model - am I correct to say that if I flash via Odin, I will lose all my apps and settings (and root)?
If I want to update and keep all my settings, am I safe to unroot via SuperSU, then update via Kies? I've read about how unrooting via SuperSU isn't really a complete unroot?
At the end of the day unless I'm 100% certain I will probably stay on 4.4.4 since there has been some horror stories with battery drain and stuff on 5.0
Click to expand...
Click to collapse
hi
Just a few points ...First if you " dirty flash" official stock Rom with Odin, then you will lose root ( so to me there is no need to unroot first ) However you do not loose any 3 rd party apps or settings . Also i never use Kies as my personal experience is that it is a waist of time .Regarding Lollipop well i have flashed several newer " version"/changelog/dated of Lollipop 5.0.1 over the past months and all of them have been good to me...( ..overall.) No real battery drain ,no lag ( only recent button and one " Samsung bug in the setting " Accessibilty" .
All my "problems " on Lollipop, on and off, was caused by 3 rd party apps
eg.Past few days i had suddenly random reboots over and over .i reflashed Lollipol ,i factory reset ,but the random reboots continued .
i then started to install all my +_ 162 ..?? apps one by one and checked
Eventually found my culprit ..'Greenify " (the experimental paid ,bolt on package, which is meant mostly for Xposed module with few functions you can also use without Xposed eg "don't remove Notifications " and Greenify system apps l)
After using Greenify for months with no issues it suddenly started giving problems .
So i could have given Lollipop the blame for my woes but i did not .
Yes I do believe Lollipop has issues ,but overall i cannot complain .
yes ,Titanuim is the way to go .
Also i "unrooted " via SuperUser app once, no problem at all, but then why do this if you just flash over it and root is gone
Bottom line ,
you can be "stuck " on Android v4.4.4 hoping and waiting .......?
or faceup to Lollipop ?
its your choice ?
good luck
Hey willcor thanks for the reply! Good to hear your experiences with this. Interestingly I've had a similar problem of sluggishness, lag and random rebooting (multiple times a day) on my Note 4 running kitkat. This went on for about 2 or 3 days. Tried installing some recently installed apps thinking it might have caused it, and now it seems it's fixed itself, I think??
Even pulling the battery and restarting often took ages to boot. Took my 128GB SD card out and tried to boot thinking maybe it was the card but it still lagged and restarted by itself. Like I said it seems ok now and has been ok for the last few days, but now that you mention Greenify, I have that installed too along with a few exposed modules. This rebooting problem is what motivated me to think about upgrading to lollipop to see if it would fix it.
Going by what you said, if I am not going to lose apps, data and settings, then I might flash to lollipop, then re-root. Sounds like the way to go. Maybe...
willcor said:
hi
Just a few points ...First if you " dirty flash" official stock Rom with Odin, then you will lose root ( so to me there is no need to unroot first ) However you do not loose any 3 rd party apps or settings . Also i never use Kies as my personal experience is that it is a waist of time .Regarding Lollipop well i have flashed several newer " version"/changelog/dated of Lollipop 5.0.1 over the past months and all of them have been good to me...( ..overall.) No real battery drain ,no lag ( only recent button and one " Samsung bug in the setting " Accessibilty" .
All my "problems " on Lollipop, on and off, was caused by 3 rd party apps
eg.Past few days i had suddenly random reboots over and over .i reflashed Lollipol ,i factory reset ,but the random reboots continued .
i then started to install all my +_ 162 ..?? apps one by one and checked
Eventually found my culprit ..'Greenify " (the experimental paid ,bolt on package, which is meant mostly for Xposed module with few functions you can also use without Xposed eg "don't remove Notifications " and Greenify system apps l)
After using Greenify for months with no issues it suddenly started giving problems .
So i could have given Lollipop the blame for my woes but i did not .
Yes I do believe Lollipop has issues ,but overall i cannot complain .
yes ,Titanuim is the way to go .
Also i "unrooted " via SuperUser app once, no problem at all, but then why do this if you just flash over it and root is gone
Bottom line ,
you can be "stuck " on Android v4.4.4 hoping and waiting .......?
or faceup to Lollipop ?
its your choice ?
good luck
Click to expand...
Click to collapse
highon2str said:
Hey willcor thanks for the reply! Good to hear your experiences with this. Interestingly I've had a similar problem of sluggishness, lag and random rebooting (multiple times a day) on my Note 4 running kitkat. This went on for about 2 or 3 days. Tried installing some recently installed apps thinking it might have caused it, and now it seems it's fixed itself, I think??
Even pulling the battery and restarting often took ages to boot. Took my 128GB SD card out and tried to boot thinking maybe it was the card but it still lagged and restarted by itself. Like I said it seems ok now and has been ok for the last few days, but now that you mention Greenify, I have that installed too along with a few exposed modules. This rebooting problem is what motivated me to think about upgrading to lollipop to see if it would fix it.
Going by what you said, if I am not going to lose apps, data and settings, then I might flash to lollipop, then re-root. Sounds like the way to go. Maybe...
Click to expand...
Click to collapse
hi,
Just a quick remark. When i was on Android v4.4.4, most of my issues eg. Private mode S HEALTH... (yes i know there was quick fixes /patches , that you could apply) Play store not installing apps, lags from time to time etc was caused by Xposed Framework. As far as i can remember Xposed was never optimise for Android v4.4.4? As "good" as Xposed was, it gave me "terrible headache /problems" on my Note 4....... even after uninstalling Xposed it broke some apps functionality! (This is a fact for me) . but yet, on all my other devices, no issues ! As stated in my previous post, that Lollipop experience, has been over all, very good for me.,(I have accepted the few bugs, that comes with every software update be it Android v4.4.4 or Android v 5.0.1.)
Lollipop also enabled me to use other apps /features eg Network Toggle app (change network only to LTE or LTE/3G or 3G only.. root required)
Bottom line
for me is.... yes, Lollipop has issues, but most of mine was caused by 3rd party apps not optimised 100% , work smoothly on Lollipop.
good luck
..............................
post note....
Titanium, i forgot, you might have some minor issues at first. Titanium could not find backup folder on my ext sd same as on Android v4.4.4) , so i used NextApp Sdfix (Play store, free app) Titanium, then was able to locate back ups. Again yesterday, i factory reset my device because of a Nova launcher, toggle notification issue and because i also wanted to for a period of time.
Titanium could not write and above NextApp Sdfix said i had no write premisson after running NextApp. i formatted my ext sd on laptop and NextApp did its work and Titanium working 100%
Just thought to make you aware if issue arrived.
Thanks... I forget all these root features have to be redone. I've also given extsd access on kitkat after rooting. Will have to do it all over again I guess!
Ok just a quick update. Flashed to 5.0.1 with Odin and rooted with CFautoroot. Everything seems to be ok apart from after rooting and rebooting, I got a "could not do normal boot" msg, saying that the phone was in download mode and not to disconnect the target. I pulled the batt and booted up normally ok. Checked in Titanium and found root access ok, activated write to SD and all seems normal.
Things seem a bit sluggish with lollipop, so I uninstalled xposed (which now won't work on this version), greenify and some other apps, and booted into recovery to wipe cache partition. When it was done wiping the cache and said to reboot, I got the same "could not do normal boot" msg. Once again I pulled the battery and it booted ok.
Not sure what has happened or if anything is affected - should I re-flash 5.0 with Odin and re-root all over again?
highon2str said:
Ok just a quick update. Flashed to 5.0.1 with Odin and rooted with CFautoroot. Everything seems to be ok apart from after rooting and rebooting, I got a "could not do normal boot" msg, saying that the phone was in download mode and not to disconnect the target. I pulled the batt and booted up normally ok. Checked in Titanium and found root access ok, activated write to SD and all seems normal.
Things seem a bit sluggish with lollipop, so I uninstalled xposed (which now won't work on this version), greenify and some other apps, and booted into recovery to wipe cache partition. When it was done wiping the cache and said to reboot, I got the same "could not do normal boot" msg. Once again I pulled the battery and it booted ok.
Not sure what has happened or if anything is affected - should I re-flash 5.0 with Odin and re-root all over again?[/QUOTE
hi,
i am sure i read somewhere about.re: your remark, when you rooted and got a msg, with
"could not do a normal reboot... I am sure it could be ( @ Chainfire,) Cf autoroot website not sure.?
I would have search for a answer /reason!/ explanation Then i would afterwards, reflash Rom. (depends on you)
Just a quick question.... At what stage did you uninstall Xposed....? before /after flashing etc. i stated before that i found Xposed "broke /caused issues after i uninstalling it. (facts about two or three times it happened , in past )
Also i had no problem in using Greenify again (i have re installed it) its just the donation /paid / experimental package i am a bit hesitant with.
good luck
Click to expand...
Click to collapse
Hey guys, I have since reflashed and rerooted and now seem to have less problems, although the phone is still sluggish, randomly locking up and restarting , and sometimes restarting to the green android "could not do normal boot" screen.
Question now is, can I boot into stock recovery to do a factory reset? I've done some research but the views seem conflicting. Is this recommended, will I be stuck in a bootloop and will I still be rooted after the reset?
I never did a factory reset when flashing from 4.4 to 5.0.1 so I'm hoping this will fix the issues I've got now.
Sent from my SM-N910G using Tapatalk
Anyone?
Sent from my SM-N910G using Tapatalk

Optimizing Apps on every boot.

I noticed a week or so ago that every time I reboot my Nexus 4, I have to sit through the optimizing apps every time. I have been going crazy searching for info on this and cant seem to find anything that helps. Phone is running 5.1.1, nothing custom, OTA update. I tried rolling back to 4.2 and everything seemed ok up until I got back to 5.1.1, then optimizing apps every boot again. I prefer Lollipop, but this constant half hour + delay before I can use the phone is unacceptable.
Any help would be appreciated, I really can't afford to buy another phone right now but this is driving me crazy trying to figure it out.
orangej said:
I noticed a week or so ago that every time I reboot my Nexus 4, I have to sit through the optimizing apps every time. I have been going crazy searching for info on this and cant seem to find anything that helps. Phone is running 5.1.1, nothing custom, OTA update. I tried rolling back to 4.2 and everything seemed ok up until I got back to 5.1.1, then optimizing apps every boot again. I prefer Lollipop, but this constant half hour + delay before I can use the phone is unacceptable.
Any help would be appreciated, I really can't afford to buy another phone right now but this is driving me crazy trying to figure it out.
Click to expand...
Click to collapse
I'm not an expert but I have some experience with my Nexus 4..
any root? SuperSu maybe?
You receive the 'Android is starting optimising app xx of xx'?
if you have SuperSu, install the last version...
Another cause may be some file in your internal storage, make a backup, delete all and restart 2 times to see if there is a change...
Last resort, flash the rom stock with nexus root toolkit with all wipe
I did use NRT to flash 4.2 back on and wiped it, then let it work its way through the upgrades again. Once it got back to 5.0+ the optimizing problem started. Phone was not rooted, just bootloader unlocked.
I flashed a custom rom based on Oreo on it and the problem stopped, so I am assuming this is a Lollipop problem, but I would really rather be able to run stock Lollipop on my phone.

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