Develop Reference

Failure - not installed for 0

I am trying to uninstall a few Google APKs that were preinstalled on an older smartphone I have.
I must do it via ADB because it's not possible to do it via regular uninstall
I found a guide on how to remove those APKs using ADB, but when I try to remove a certain Google package, for example com.google.apps.plus, using the following command:
pm uninstall -k --user 0 com.google.apps.plus
I get the following error: Failure - not installed for 0
What am I missing?

Even I was facing the same issue. For solving this problem just make sure that you have the latest USB drivers for your device. You can get your drivers from Android Devs Website. This is a list of all major OEM's compiled by google. Then download ADB tools from here. After ensuring the above steps, download any App Inspector application from play store for getting the exact package name of the apps.
In your device's Developer Options,turn on USB debugging. Open Windows PowerShell where you have downloaded the ADB tools.To see if ADB is working use .\adb command.
Then use .\adb shell for activating adb shell. Then use this command for removing the packages pm uninstall -k --user 0 <package name>. You will get package name in the App Inspector application.

In my case I had the weverse app, what I did was:
Open the app (it required me to update it)
Update the app in the PlayStore
Close the app Uninstall with the common command
pm uninstall -k --user 0 "package name"

(Android Studio 2) Could not access the Package Manager (No emulator)

When building the app, it builds fine, but when it comes to installing the app, it's not working.
This is my log when building and trying to install the app.
10/29 20:17:47: Launching app
$ adb push C:\Users\(Removed)\AndroidStudioProjects\MyFirstApp\app\build\outputs\apk\app-debug.apk /data/local/tmp/com.example.(Removed).myfirstapp
$ adb shell pm install -r "/data/local/tmp/com.example.(Removed).myfirstapp"
pkg: /data/local/tmp/com.example.(Removed).myfirstapp
android.os.TransactionTooLargeException
Error: Could not access the Package Manager. Is the system running?
$ adb shell pm uninstall com.example.(Removed).myfirstapp
Unknown failure (Failure)
Error while Installing APK
The (Removed)'s are my computers name(Not actually, just don't want to spread its real name on the internet)
Now before you go and answer "Unlock your phone!" or "Type adb stop-server", I will list you what I have tried so far.
Restarted the ADB server
UNLOCKED my phone
Restarted my phone
Restarted Android Studio
Restarted my laptop
"Clean build" the project
ADB devices does show my device(can browse it's files in the explorer)
Turned on/off the "Instant Run" thing
My code is the Hello World when creating a new project or activity, nothing changed(Not even the IDE(Fresh Install)). I would love it if someone would help me answer this question as for all the other answers have to do with an emulator(Which none of the answers worked).

Uninstalling bloatware application using adb

Hello all,
I want to remove applications that were on my phone since the beginning but I don't use them. I have Sony Xperia P and one of the apps I want to get rid of is joyn, which uses about 20% of battery although I don't use it and I also tried disabling all of its parts in settings/applications (with no luck).
I rooted my phone and tried to use adb to uninstall the app but the attempt always fails.
What I did:
C:\adb -s YT9100UAAX shell
shell#android:/ $ su
The first time on the phone, I needed to allow access to super user in SuperSU application and from now on the ABD shell is in the list of elevated applications in SuperSU.
root#android:/ # pm uninstall com.rechild.advancedtaskkiller
Success
Regular application uninstallation works fine, but when I try to uninstall something else I get:
root#android:/ # pm uninstall com.orangelabs.rcs
Failure
root#android:/ # pm uninstall com.vodafone.vodafone360updates
Failure
What am I doing wrong?
Thanks for the help

Based on corsair992's advice I downloaded Titanium Backup and I was able to uninstall everything I wanted (incl. the bloatware). Didn't know this app was so powerful!
Thx a lot corsair992

Android : How does one uninstall a wear watch face from the emulator?

I'm looking to uninstall a custom watch face from a running emulator without resorting to wiping the emulator and rebooting. Which ADB commands might I send to the emulator to perform this task?

Just like any Android device, you can use adb. From a command line:
adb uninstall com.your.package.name
If multiple devices are connected, get their names with adb devices and then use:
adb -s device-name uninstall com.your.package.name

For the record, you can also delete a face from a watch as follows
Hook your host phone via usd to a computer with Android SDK
execute adb in shell mode adb shell
pm uninstall com.your.package_name
This will remove the package from the phone and the watch
Ideal for situations where you messed your APK signature leaving package name unchanged.

Android: adbd cannot run as root in production builds

I have an Android-based phone (2.3.6) with unlocked root privileges.
Since i'd like to have access to my phone through my computer, today i've installed QtAdb and Android SDK.
If i open a command prompt and i do
adb shell su
i get
#
And so I am able to copy, remove, push files on my phone (on the phone i get a notification using the app "SuperSU".)
But if i launch QtAdb - under Windows 7 - i get the following error: "adbd cannot run as root in production builds". I miss something? There's something wrong with QtAdb?

The problem is that, even though your phone is rooted, the 'adbd' server on the phone does not use root permissions. You can try to bypass these checks or install a different adbd on your phone or install a custom kernel/distribution that includes a patched adbd.
Or, a much easier solution is to use 'adbd insecure' from chainfire which will patch your adbd on the fly. It's not permanent, so you have to run it before starting up the adb server (or else set it to run every boot). You can get the app from the google play store for a couple bucks:
https://play.google.com/store/apps/details?id=eu.chainfire.adbd&hl=en
Or you can get it for free, the author has posted a free version on xda-developers:
http://forum.xda-developers.com/showthread.php?t=1687590
Install it to your device (copy it to the device and open the apk file with a file manager), run adb insecure on the device, and finally kill the adb server on your computer:
% adb kill-server
And then restart the server and it should already be root.

For those who rooted the Android device with Magisk, you can install adb_root from https://github.com/evdenis/adb_root. Then adb root can run smoothly.

Use adb shell; su;
I still have not found any other solution for android 12 rooted with magisk. adb_root does not work with android 12. adbd insecure does not work for me and throws error could not patch adbd.

if anyone is still having issues, heres how i fixed it
you have to start the shell with the phone and go into the magisk app and in the superuser tab (bottom) you have to enable root access for the shell and it works!

You have to grant the Superuser right to the shell app (com.anroid.shell).
In my case, I use Magisk to root my phone Nexsus 6P (Oreo 8.1). So I can grant Superuser right in the Magisk Manager app, whih is in the left upper option menu.