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recovery data -

Discussion in 'Android Devices' started by Horizon, Oct 7, 2019.

  1. Horizon

    Horizon Lurker
    Thread Starter

    Hello,

    I use the beautiful application "adb " very powerful to uninstall unwanted app like google and Samsung [​IMG]. But I use it too much. I uninstall all google application. And now my phone is unable to boot. only in the recovery menu.
    So questions are:

    • How can I recover my data, if now I can't detect any more my device with adb ? There is another solution ? Another hand Samsung keys seems to detect my phone but I can't recover with it.
    • Do you think I can recover my phone with reinstall uninstalled package, and do you have link to learn what package is indispensable ?
    • The recovery boot proposes to reinitialize my phone, but specify we need a google account. can the recovery be done while I uninstall all google packages ? If I reinitialize my phone can I hope recover some data with tool like photorec ?
    To doesn't start again :
    • Why some package is protected (Failure [DELETE_FAILED_DEVICE_POLICY_MANAGER]), if other package can be deleted with consequence for the system ?
    Thanks :blushDroid:
     


  2. GameTheory

    GameTheory Android Expert

    1. Were you rooted?
    2. Which recovery, stock or twrp?
    3. Did you use this command for uninstalling apps? "shell pm uninstall -k --user 0 PACKAGE_NAME"
    It seems like you may have gone to the point of no return based on your description.
     
  3. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    Is the phone rooted (or running a custom recovery)? ADB should not allow you to remove system apps without having being granted root privileges, so I am a bit surprised if you've managed to screw up an unrooted phone this way. Can you tell us what you did exactly?

    If you can only get into recovery, and it is the manufacturer's recovery (not replaced by a custom version) then no, you cannot recover your data. What happens next really depends on what the damage is: if the problem is that data on the phone are screwed-up and the phone can't reboot then clearing all data (a factory reset, which you can do from recovery) will get it booting again, but that will permanently delete anything that isn't backed up. You could try just clearing cache from recovery - that's an extremely long shot, but just wastes a minute and if by some chance it were to work it would save all of your data.

    If however the problem is that you've damaged the system software to the point where it won't boot, then you'll need to download a fresh set of firmware and reflash the phone completely (replacing any Google and Samsung apps you removed in the process). The good news is that if you know your full model number you can find almost all Samsung firmware at sammobile.com. What I can't tell you is whether the data on your phone will survive this: with most manufacturers a reflash like this will wipe the phone.

    Specifying a google account after a reset sounds like factory reset protection (an anti-theft measure). So you'd need to enter the Google account you were using on the phone before the reset. Have you already reset it then? As said above, a reset will fix a data problem but it won't restore any apps you've removed, so if that is the cause it won't help (and you'll have to reflash).

    Forget about recovering data. Although that phone is old enough that the internal storage won't have been encrypted (unless you chose to do that), data recovery software won't work over an MTP connection anyway.

    As for your final question, the real question is why did it allow you to remove something vital? Only Samsung could answer that (unless you used root privileges to do this, in which case the answer is that they didn't protect against someone hacking the phone to gain root and then using that to delete stuff because they don't support you in doing such things in the first place).
     
  4. GameTheory

    GameTheory Android Expert

    It lets you uninstall(like a disable) apps for the userspace even system apps on a non-rooted phone with the command I posted. Done it many times myself. Doing this to the wrong system app puts you in a bootloop. However, there's a safety feature for this. A simple factory reset restores the apps and ends the bootloop.
     
    Hadron likes this.
  5. Horizon

    Horizon Lurker
    Thread Starter


    1 ->I don't know what you mean
    2 -> the manufactory recovery
    3 -> yes I used it


    - My phone isn't rooted
    - I uninstall all this packages (not all in the same time, I do it little by little) :

    Samsung lcation SDK: com.sec.location.nsflp2
    Samsung account : com.osp.app.signin
    Google ont Time Init : com.google.android.exte.shared ==> FAILED NOT INSTALLED
    withTV: com.samsung.android.app.withtv
    SmartThings : com.samsung.android.easysetup
    Email: com.samsung.android.email.provider
    Galaxy Store : com.sec.android.app.samsungapps
    Samsung lcation SDK: com.sec.location.nsflp2
    Samsung account : com.osp.app.signin
    Google ont Time Init : com.google.android.exte.shared ==> FAILED NOT INSTALLED
    withTV: com.samsung.android.app.withtv
    SmartThings : com.samsung.android.easysetup
    Email: com.samsung.android.email.provider
    Galaxy Store : com.sec.android.app.samsungapps
    com.sec.android.deamonapp
    Workspace :com.samsung.android.knox.containeragent
    Samsung Experience Service : com.samsung.android.mobileservice
    Maps : com.google.android.apps.maps
    Service Google play : com.google.android.gms ==> Failure [DELETE_FAILED_DEVICE_POLICY_MANAGER]
    Farmework des services googles : com.google.android.gsf
    Samsung push service : com.sec.spp.push
    Market Feedback Agent : com.google.android.feedback
    Print Service Recommendation Service : com.google.android.printservice.recommendation
    Samsung Internet : com.sec.android.app.sbrowser
    Health Service : com.sec.android.service.health
    SmartThings : com.samsung.android.beaconmanager
    com.google.android.sambadocumentsprovider
    com.google.android.configupdater
    com.google.android.setupwizard
    com.google.android.webview
    com.google.android.packageinstaller
    com.google.android.gms : Failure [DELETE_FAILED_DEVICE_POLICY_MANAGER]
    com.samsung.android.knox.containeragent
    com.samsung.android.mobileservice
    com.google.android.apps.maps

    I didn't try to rest the phone.

    So I will try the factory rest.
    Do you have some information to learn to how works factory reset ?

    Thanks for all your answer
     
  6. GameTheory

    GameTheory Android Expert

Samsung Galaxy A3 (2016) Forum

The Samsung Galaxy A3 (2016) release date was December 2014. Features and Specs include a 4.5" inch screen, 8MP camera, 1/1GB RAM, Snapdragon 410 processor, and 1900mAh battery.

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