Related
So, a little history...
I'm on my 2nd Captivate (unrelated issue). The boot problems didn't arise until I restored my data onto it. The first time I tried restoring system data along with my apps (which I figured was safe since I was going from 2.1 stock to the same) but that had lots of issues. So I did a factory reset, and started over. This time I just restored apps and their data, and a few specific pieces of system data (contacts, wifi APs, etc). That worked better. But later I got too aggressive with what system apps I "froze" (using Titanium Backup), and it got into boot loops I couldn't break out of. So I did another factory reset.
This time, first I carefully froze only apps I was to confirm were safe to freeze. I didn't proceed restoring my apps until I was done freezing and ensured it was booting fine. I then restored all my apps (and their data). The problem is now that it takes forever to boot... in fact, it'll go into a boot loop if I just leave it be. It seems the only way I can gain access is to try and unlock it before it's done booting, clear any "Force close" errors (sometimes takes a few tries) and given enough attempts, I can get in. But the boot takes an unbelievable amount of time, and even with my original apps is many times longer than before on my previous Captivate. Once I fuss my way in, it seems mostly fine, but something is obviously wrong and I want to get it straightened out.
Aside from doing another factory reset, and reinstalling all my apps (which takes like a day without troubleshooting after each, since batch restores in TB don't seem to work well on the Captivate so I have to do them one by one), I'm hoping there's a way to troubleshoot it in its current state and try to fix the problem surgically versus erasing and starting over. I looked at the logcat logs but got in over my head... there are so many errors and warnings and I don't know what's normal and what isn't... too many to know where to begin with searching Google.
So... advice? What tools are available? Even the logcat doesn't seem to kick in until the boot is mostly done, so I'm not sure if it can catch the problem while it's happening. One frustrating thing about Android is that is seems to have no "safe mode" or other diagnostic boot or full logging where you can methodically look at what's happening and experiment with the config. If this was a Windows, Linux or FreeBSD box I'd be in my element and able to get to the bottom of this, but on Android I feel even more crippled, locked-out and helpless than even on Windows. Urgh.
There's got to be a better way to troubleshoot and fix than endless random factory resets. This is something us anti-Windows people scold PC makers for, with all their use of "Restore CDs" for every minor and trivial software issue.
Thanks!
I can't help but think you are still disabling some essential system apps. Either that or one of your apps is causing major problems. Please list what you have frozen in tibu. Btw, the batch function works fine and is what most people on here use.
Also, what is force closing after you restore your apps.
newter55 said:
I can't help but think you are still disabling some essential system apps. Either that or one of your apps is causing major problems. Please list what you have frozen in tibu. Btw, the batch function works fine and is what most people on here use.
Also, what is force closing after you restore your apps.
Click to expand...
Click to collapse
First of all, thanks for taking a stab at this.
My frozen apps are:
* AllShare
* AT&T FamilyMap
* AT&T Hot Spots
* AT&T Maps
* AT&T Music
* AT&T Navigator
* AT&T Radio
* Daily Briefing
* Days
* Instant Messaging
* Media Hub
* Mini Diary
* Mobile Banking
* Mobile Video
* MobiTV
* Where
* Write and Go
* YPmobile
I also tried removing my MicroSD card, as well as switching back to Touchwiz (from LauncherPro). Didn't help.
Yeah the batch problem in TB is very frustrating. I'm using the pay/donate version so I'm missing out on a feature I paid for. I've been exchanging emails with Joel (the author) and we haven't figured it out yet. Batch backups work fine. Batch uninstalls also work fine (update: phone just spontaneously rebooted after about 50 or so uninstalls in a batch). It's the batch restores that seem to choke it. It's not corrupt backup files... a verify runs fine, and I can individually restore the same handful of apps one by one that will choke and hang/reboot the Captivate if attempted to restore in a batch.
The FC error I get is on boot-up, as I try to unlock the screen prior to the boot finishing. I often see "Process system is not responding".
I have aLogcat installed, if that's any use. A few questions about that:
- What's the best logging level to view on? In other words, do I care about "Warnings"?
- What errors are common, harmless, and safe to ignore?
Currently I've tried uninstalling everything down to just a few core apps. Certainly boots fine now, but I get plenty of warnings and errors in logcat.
Are u restoring just the user installed apps+data, or system apps too? Or restoring system stuff like contacts data, accounts prefs, etc?
diablo009 said:
Are u restoring just the user installed apps+data, or system apps too? Or restoring system stuff like contacts data, accounts prefs, etc?
Click to expand...
Click to collapse
I did not do a "restore system data" or any batch/bulk option in TB that restored all system data. As I recall, the only system data I restored a-la-carte (by selecting the individual item from the TB list) were:
Accounts
Bluetooth pairints
Bookmarks
Calendar
Contacts
Wi-Fi Access Points
These were all items in green in TB. I don't believe I restored anything else. Possibilities I suppose are wallpaper settings, "Country, Launguage, Time Zone"... but I definitely would not have restored anything not green.
Are these items safe? Is there any system data definitely not safe to restore? I have to wonder though, if "system data" is unsafe to even restore to the same stock OS version... why back it up at all?
I'm not a long distance from doing yet another factory reset I suppose, if it must come to that. But I'd love a way a bit more analytical/exacting to try and troubleshoot this other than "reinstall one app, reboot, see what happens" as that will take me a week to get back to where I was. I also suspect it's not just one single app that would suddenly show a huge difference after installing, but instead might be the cumulative errors from several apps and knowing how to identify that and clean them up would be useful.
Using adb logcat you can view what is occurring while the phone is booting and possibly see where it is hanging or what is causing the slow boot times. I have seen problems from restoring data such as accounts and contacts with titanium backup but does not seem that it should be an issue when using the same system though I have very little experience with the stock firmware. I know it is not an answer to your question but it seems that you are wanting to remove all the att/Samsung BS so why not flash a rom that does this as well as much more?
Sent from my ADR6300 using XDA App
Thanks for the tip about adb. I've actually not needed adb for anything yet so I've never set it up or used it. I wasn't aware that the service would be active early enough on the phone's boot process to allow it to log boot logs... nor was I even aware it could do this. I'll definitely check out how to set this up... however, if you have a free second and can point me in the right direction (FAQ, instructions, etc) it'd certainly be appreciated otherwise I'll search around and try to find it.
I could probably find other ways to restore contacts and could set my accounts up again manually but I really doubt that's the cause and the other ways are sort of a pain and imperfect. Since neither of us is really convinced that'd be it I won't bother yet until/unless you really suspect it.
I wondered how long it'd take before someone would suggest a custom ROM, this being XDA and all. Short version is I'm not really sold on the concept, as they are all based on the buggy beta leaked ROM, or 2.2 ROMs from other devices that have been hacked up to sort of work as well as possible on the Captivate. All seem to have issues... enough that I'm not really left feeling confident about them. Seems every release unleashes new issues despite addressing old ones, and all seem to have at least a handful of gremlin items that just don't work quite right. Don't have a warm fuzzy feeling, and I still feel like Samsung is going to release an official 2.2 for the Captivate within the next month or so, so I'm interested to see what comes of that. If nothing else, it'll give a better baseline for custom 2.2 ROMs. Then there's the 2.3 being worked on... now that might be interesting.
I don't really think my issue here is related to me running 2.1.
On my phone so it is a pita to search and add a link for you but search for android sdk and you will find what you need to get adb up and running.
And as far as the rom issue goes..it is your phone and I respect your concerns I just had to ask
I would think its media hub that slows it down. It will search your SD cards on every boot. I would start there first.
smokestack76 said:
I would think its media hub that slows it down. It will search your SD cards on every boot. I would start there first.
Click to expand...
Click to collapse
That's one of the apps I've frozen though.
For me the longest process while booting is the stupid media scanner upon bootup. Takes FOREVER for the phone to finally "boot" all the way up.
Been looking for a way to disable it (not really lol) and only have it scan manually to see if the boot time will improve. I'd start searching there.
Also - from what I've read nothing you did should have affected the phone. BUT - if your using Google for your Calendar and Contacts.. and they all get synced up to Google? Why bother doing the restore for those? After you sign up with the Market they get pulled back down to your phone automagically
It's definitely more than just the media scanner. I watch that. When everything is loaded up, it actually reboots in a loop unless intercept the FC. The media scanner will rerun over and over each time... far more than the standard two times.
And I use Google Calendar for my events, but I keep my contacts locally on my phone.
So what is the FC again?
Yep.. my media scanner will run at least 3 times before it stops checking everything.
Very frustrating that the software does this EVERY time I boot back into my phone - you'd think a programmer would put a check to see if it had run before or make it user configurable to scan when you want it to.
avgjoegeek said:
So what is the FC again?
Click to expand...
Click to collapse
See my second post (reply #3):
"Process system is not responding"
LOL sorry not enough coffee and a lil' guy that decided to wake up at 4a.m. = not a good mix.
Well.. did the ol' wise search of Google and came up with:
Might be a permissions issue. Easiest way to fix it is to run ROM Manager and have it fix permisions.
Run the command yourself in ADB:
Code:
Open terminal and
>su
$mount -a
$fix_permissions -r
The -r is optional, but necessary if you find orphaned apps (the app not found please reinstall message)
And reboot. That may help.
And it was also stated that you might have an errant widget/application causing the issue as well. That will be fun trying to figure out what it is.
And.. from my non-dev/non-professional experience - I have checked the logs on my phone and do see a large number of warnings on the phone - but never hindered performance.
So.. 99% of the time you can probably ignore them.
But back to the FC issue - I would try doing a restore of your apps/data again (I read where you have it back down to the "core) and then run the permission script or have ROM Manager do it for you and see if it returns.
Just an update that I think the "fix permissions" thing solved most (but perhaps not all) of my issues. Thanks so much for the tip. I've been reinstalling apps in batches and it's much better, although I see it getting bogged-down bit by bit and I can't pin down what or why.
Thing is, the apps I'm installing in these later rounds/batches shouldn't be resident all the time, shouldn't be auto-loading, and don't come up in things like Startup Cleaner or Advanced Task Killer. Nor do the various process monitors I've tried seem to have the granularity/ability to catch them while they're happening.
So things are better, but I still have some issues without a suitable means to diagnose. I don't get why just having more apps installed, but not running, should affect boot time so much. Hmm...
An inability to troubleshoot certainly rains on my love-affair with Android... not that I'm jumping to another platform anytime soon, but I really want this to work well (as well as be a good salesman to friends and family who often turn to me to show off quality technology).
Hi everyone. Im one of the developers of SwitchMe, and app that allows multiple secure logins into separate installations of android on a single device. The pr is after the break.
I really need a few people to check into some issues people on the GTab have been experiencing. There are some warnings involved:
- testers must perform a full nandroid backup before using the app, it is not our responsibility if you start getting boot loops
- if you report results or bugs, please use the "Write to us" function in the app whenever possible, and always describe the issue in the header of the logs you send
- if you post here, bes sure to include your device type and rom
- if you have apps installed on sd, be sure to mention that as well
--------------------------------------------------------------------
SwitchMe is a unique application for root users that allows you to log in and out of multiple installations of Android just as you would on a desktop computer.
The technology behind SwitchMe saves all of your applications and data, protects it and stores it as a file in memory. You can then log out of an
account and log into a fresh installation of Android or another account with its own unique content.
You may create as many profiles as the memory is capable of holding. Some of these may require very little free memory because they contain few apps,
others will be larger as they contain many applications and lots of cache and data.
Why is this functionality useful?
Privacy - the most obvious benefit is that you can securely share one device among multiple users, which gives you privacy and peace of mind.
Testing - if you are a developer, you can use profiles as clean sandboxes to test your applications and their interaction with the system.
Gaming – with multiple installations of Android on a single device, you can now play online MMOs as different characters.
Speed - the games your kids play slow down your tablet, but with SwitchMe you can easily create profiles without games or instant messengers.
Battery life - when the battery is low but there are important emails or documents to edit later, switch to a profile which only contains these essentials.
These of course are only suggestions - there are plenty of other uses for the functionality SwitchMe offers.
Market link:
https://market.android.com/details?id=fahrbot.apps.switchme
The Lite version allows the creation of two profiles, enough to test on.
Screens:
i actually bought your pro version and i was able to use it, and i realized, when i try it hangs on boot, but after you clear cache after trying to switch profile, it will work pretty well, i also can confirm this works well on the nook color running cyanogen
gtab running vegan 7.1.0 gingerbread
and i have about 3 apps installed on sdcard
Thank you for the feedback. Were you wiping the cache partition through or the dalvic cache CWM?
when i switch it hung so i hard booted into Cwm recovery and wiped cahce and dalvik after rebooted it booted into 2nd profile, and worked from there, i was able to switch back in forth without it hanging on bootanimation,
for the nook color it works perfect havent really seen any issues rise since installed, only draw back when i purchased pro it was on wifes account not mine
side note wife has 23 applications installed on sdcard, on the nook color
Oo guess forgot to add functionality well i got a gtablet and nook color
the gtablet is mine and nook is wifes
But she likes to use the 10 screen so made a profile for her and her stuff, and when she uses my tablet ill use hers so i can add all my lil mods and apps so it doesnt conflict with her stuff as well we got a kid so we use it for her kid games and movies
Any issues to report?
SwitchMe 1.2 has been rolled out and now includes a lockscreen replacement:
1.2
Added lock screen for logging in and out
More stable Fast switch implementation
Reworked UI colors
Now, its very important that we get some feedback on how this big new feature works, so please read up on it in the help and post your thoughts!
1.2.2 - HOTFIX 2
Reworked widget on qHD+ displays
Fixed widget text on HC and ICS
Fast switch improved on older devices
Hi guys! I would really appreciate some feedback regarding the new lockscreen!
Anything at all guys?
Tried this app about a week ago sorry I didn't post back sooner. Running Beastly-Clemsyn rom (android 2.2) on gtablet, normal install to internal memory, no overclock. I tried to install twice but both times it froze my tablet immediately after installation. Couldn't do any testing or troubleshooting as I could not successfully install. This app is a great idea and I will keep trying to get it to work as new versions are released.
MOst likely there is no point unless your rom changes...
Thanks for the reply. I will likely change roms again soon and will definitely try this out again when I do.
OK, sorry but its just too dangerous to support data links - there would be boot loops everywhere!
By the way, some intit scripts would also make it incompatible!
1.4.3.7
Fixed device specific switch screen crashes and issues
Fixed UI bug in switch screen preferences
If anyohe had problems with superuser before, this should fix them. Please let me know if that is the case, its important we get some feedback here!
1.5.3.0
Enabled full support for MIPS and x86 architectures
Many root daemon code fixes and optimizations implemented
Any issues with the new build?
Anything to reprot?
1.5.3.8
Fixed issue switching profiles (One X and others)
Fixed rare crash on adding/ removing profiles
Fixed many device specific issues from user logs
I noticed there are some new apps and some new processes with the new update to ICS, like Google+ and a new messenger and some new authenticators. Does anyone have an updated list of what is safe to disable/freeze?
Marvin- said:
I noticed there are some new apps and some new processes with the new update to ICS, like Google+ and a new messenger and some new authenticators. Does anyone have an updated list of what is safe to disable/freeze?
Click to expand...
Click to collapse
I'm just looking to remove that junk. Root Uninstaller didn't seem to be helpful. Thankfully, this Moto junk is my work phone and not my personal. I'd never buy one of these!
I too am interested after noticing that I am down 75MB+ of available memory on average after the OTA ICS upgrade (coming from stock GB).
Actually, you don't really need any special guide. Almost everything can be either uninstalled or frozen by going into Settings => Applications and finding the app in the list. This is now built in to Android, so if you can disable it from there, it is safe. Also, most of the additional bloatware that isn't directly VZW can just be uninstalled now.
Awesome. I noticed that you can disable natively now. I just wanted to make sure disabling or removing stuff would not hurt future updates like people have said it would in the past.
Marvin- said:
Awesome. I noticed that you can disable natively now. I just wanted to make sure disabling or removing stuff would not hurt future updates like people have said it would in the past.
Click to expand...
Click to collapse
Nope, this is now an Android feature. You can, of course, root your phone and further disable some software, but for the most part, you should be fine sticking with the safety of the native disabling.
Excellent, thanks for the quick response.
i like how they discourage you from disabling the bloatware by telling you stuff might misbehave... yeah, if i disable the NFL thing and my phone misbehaves, it's getting returned. lol
i can't wait for the day when the carriers are forced to allow us to completely remove the bloat that comes on phones, just like PC manufacturers were required to in the 90s.
has anyone experimented with repartitioning so that the app storage and user data areas are in the same partition? i really don't see any reason to keep them separate. right now i could get another 2gb back from the app partition to store more music in if i wanted to.
Gibson99 said:
i like how they discourage you from disabling the bloatware by telling you stuff might misbehave... yeah, if i disable the NFL thing and my phone misbehaves, it's getting returned. lol
i can't wait for the day when the carriers are forced to allow us to completely remove the bloat that comes on phones, just like PC manufacturers were required to in the 90s.
has anyone experimented with repartitioning so that the app storage and user data areas are in the same partition? i really don't see any reason to keep them separate. right now i could get another 2gb back from the app partition to store more music in if i wanted to.
Click to expand...
Click to collapse
The "your phone might misbehave" is more of a generic message, but it can apply to anything. For example, if you have an app that relies on one of the activities from the NFL app, it is quite possible that your phone will do something unexpected (like crash).
Of course, I do also wish I could completely and safely obliterate all the VZW stuff.
As for repartitioning, Motorola does this so that they can continue to provide a mass storage connection mode. If you repartition to unified storage, it will mean that you will be restricted to MTP/PTP transfer modes. It also means that you'll need to be a LOT more careful when modifying your phone's OS. Personally, I recommend you simply invest $35 in a 32GB mirco SD card, or if you really have a lot of music, spring for a 64GB one.
I have had my Moto G2 for more than a year now. But with recent Android 6 update some things improved but phone started getting slower and lagging. I have tried factory reset but still has issues. Maybe it uses too much RAM.
Please give some suggestions.
Thank you
RjSingh390 said:
I have had my Moto G2 for more than a year now. But with recent Android 6 update some things improved but phone started getting slower and lagging. I have tried factory reset but still has issues. Maybe it uses too much RAM.
Please give some suggestions.
Thank you
Click to expand...
Click to collapse
Did you find any solutions
Use Greenify App ........its help u..
Stock 6.0 is very buggy, flash los13
This is what I strongly recommend doing. I tried everything that could be tried without rooting, as I think unlocking the bootloader and using customized software doesn't give you the reliability of the Moto apps, and it doesn't provide an acceptable level of security. If you have an unlocked bootloader and a custom recovery your passcode is useless as it can be bypassed in minutes. You don't want that.
* The #1 culprit is accessibility services. Even if one single thing is enabled in accessibility, Android is going to slow down hard. Android's accessibility settings allow apps to gain special permission, and stuff like that makes it possible for Braille back or any medical device to be able to get deeply tied into the OS. When an App starts an accessibility service, it gains special services and it becomes tangled to the OS so deeply that Android will start logging every little thing you do. That's great if you have special needs and you need something like that to use your phone, but if it's just some cool App, it's really not worth it.
Head over to settings, accessibility and make sure everything is toggled off. On top, you'll see a list of Apps. Get inside all of these sections and turn the toggles off.
* Cut down on Apps. The more you install, the worse it gets. Very simple. Strive to install Apps that are small in size and that don't use much RAM. You can see what's running in the background in developer settings (Google how to enable those) > running services. If you see any App running that shouldn't be and it's not essential, it must go. Anything you haven't used in the past 60 days must go. Whenever you find you have an App you never open, even if it's super small, just get it out of the system. Not only is it good for your phone, but it's also good for your own sanity and balance! Do some research. You'll find that the excellent suite of Google's preloaded Apps is already enough for pretty much everything. Many of the features are pretty much hidden or not advertised, but they're there. Your phone was designed to be usable from the ground - up, only install apps for things that you can't do natively i.e. chatting using WhatsApp, social media, Spotify, an RSS reader, Google Keep, nutrition tracking apps, Uber/Lyft and so on and so forth.
* See which of your Apps have web versions. Uninstall the App, and create a shortcut for the web version in Google Chrome.
* Free up storage. Strive to keep as much free storage as possible. Get a file explorer that's not ES and delete folders from apps you no longer use. Dig through WhatsApp > Databases and delete all the outdated ones. Get rid of all the unwanted, old photos, videos and voice notes left behind by messaging clients. Go through that mess your Downloads folder it and simply get rid of things you no longer need. Get rid of your screenshots too. Save the important ones in another album.
* Reboot on a regular basis. I'd say, turn your phone off and back on every 2 - 3 days.
* Use Google Photos's "Free up storage" to get rid of local copies of pics and videos that already safe and sound on your Google Photos account.
* Don't use Greenify in this day and age, especially if you're not rooted. It uses accessibility and, as you might expect by now, right, it's counter - productive. Your phone already does a good job at freezing Apps you don't use after a long period of time starting Android 6.0
* If an App keeps running in the background, consuming too much RAM and misbehaving, force close it. Get it from the App drawer, drag it to "App Info" and go "Force Close" on it. Android will get the hint and it won't let it start back again unless you so choose.
* Wipe the cache partition. It does not require root and there is a very nice guide on the instruction manual online. It doesn't delete any personal data and it works wonders.
* To wipe cache, head on over to settings > storage > internal storage > Cached data. Tap it and tap OK.
* Chrome caches a lot. Get into its app info, then storage, then clean data. Tap the first button: Chrome will delete cache from websites it deems unimportant, so you'll still have all the cache, cookies, history and login info from your favourite websites.
* If you have any App that promises to make your phone faster or free up storage or prolong the endurance of your battery such as Clean Master, DU Battery Booster, HTC Boost + etc etc get rid of that too. They're counter - productive and overall bad. I could sit there for hours giving you reasons why they are useless. The same goes to antivirus software.
* If you use Facebook, either uninstall it and use it on Google Chrome (it pushes notifications too!) or switch to Facebook Lite or Swipe. Also delete Messenger, as the web version and the external clients deal with that too. Again, if you prefer, use Messenger Lite instead. Or just don't use it on your phone at all and gain a lot of free time.
* Consider giving up on Snapchat as long as you have this phone. It's just too much. I got rid of it and I'll hop back on on my next device!
* If you use any cloud service other than Drive, buy Solid Explorer, add the cloud service and delete its proprietary App. Solid will be more than enough to run it.
* You don't have to keep Motorola and Google apps you don't need, such as Google Plus, the almost dead Hangouts or the discontinued Assist. Simply drag and drop them to "App Info", and then "Disable" them. Actually, do it. These apps are super demanding in terms of storage and stuff. As soon as you turn your phone on they don't make an impact on your storage, but as soon as they get updated the original App gets frozen and a duplicate gets installed in the user memory. That is, YOUR storage. Disabling Apps will get rid of the double copy and freeze the one that's in the system partition, storage you can't use anyway. Say: Google Play Books keeps running and it uses 200+MB, but you're a Kindle user like me and you couldn't care less about Google's own objectively inferior e-reading competing service. Simply disable Play Books and boom, your phone's a little faster and you've claimed yourself well over 200MB!
* The best security is common sense. Only install apps from the Play Store and disable unknown sources in security. Really, it has everything you need and more.
* Nova Launcher. The preinstalled launcher is great and lightweight enough, but now that it's on the way out I notice it slowing down and randomly being unreliable and not showing anything on it. Nova is graphically the exact same, except it's a lot faster and more optimized. Caveat: you'll need to open the Google App to access the Now feed.
* Delete all the data out of Play Music and set it to "Downloaded only" to prevent it from getting so huge again. It apparently doesn't always save to the SD card, and we can't do that on an 8GB phone.
* Disable the HP Printing service if you don't have an HP Printer.
I have a Galaxy Tab S2 SM-T719, running Android 7, not rooted
I am generally pretty careful about the sites that I visit, but yesterday, a BBC app appeared, see attached screenshot
I am concerned about this because:
1) I do not recall installing it
2) I already have the official BBC app - which has a red background
3) When I select the App, there is no uninstall option
4) It does not appear in my list of Apps under Settings
5) It does not appear in 'My Apps and Games' in Playstore
6) I can not find this via a search on Playstore
Can anyone shed any light on this or suggest how I can remove it
Thanks for reading and any help
Search Google for that image.
Malicious jpeg that are downloaded can cause mischief in the folder they are in. They must be deleted! They will corrupt a database.
Don't move anything out of the download folder for now! Check for changes and any downloads you didn't do. Scan with Malwarebytes; it may find something but not necessarily all of what's there.
Treat all data on the device as infected for now; backup data but quarantine it from other Androids* and backup drives. Place backups on preferably on standalone OTG flashsticks or hdds.
Backup all critical data, NOW if not already done!!!
It may be a malicious app or trojan preloader manage to breach the browser. If the right conditions were met it may have install a rootkit or virus. If so it must be completely erraticate.
Again check the download folder. If in doubt delete entire it's content.
If you can't find and purge the infection, factory reset. Change all passwords after the reload.
Don't goof around if an infection is suspected. Take the device offline, now.
No time to dilly-dally Mr Wick, tik-toc...
After the reset if done be careful when adding your old data as it may be laced with a malicious file. Install only trusted apps. Keep trashware like WhatsApp, FB, Twitter, etc off of it.
*it's unlikely to cross infect a Windows system but best to isolate the data as much as possible to avoid rude surprises. Treat as infected until proven clean.
Blackhawk
Thanks for your suggestions
This may just spur me onto doing a LineagOS installation if I can resolve a couple of queries - posted here
LineageOS Installation queries
I would like to prolong the life of my Tab S2 SM-T719 (8 inch LTE, 2016), which is running Android 7, not rooted I have done a fair bit of reading through the various threads, but I have a couple of questions about the install - apologies if...
forum.xda-developers.com
It sounds like it might be best to do the factory reset and then do the installation
You're welcome.
If you're running Android 8 or lower a reflash may be needed if it got infected with that "immortal" rootkit that can hide on multiple partitions.
Apparently there is now a way to remove the dreaded Xhelper.
Be aware of this little nasty... check for it.
Android 9 and higher are immune to this one.