“app not installed” when trying to uninstall app after it's installed via Android Studio
<p>I have meizu m2, (Android version 5.1, and Flyme version 4.5.31) and I run the app on my phone, (with the "run" button, not export apk file -> install via file manager) and the app works fine, but when i'm trying to uninstall the app, it's does problems.</p>

<p>After I uninstalled the app, (settings -> apps -> "test1" (app name) -> uninstall) it not exists anymore on the phone, but in the apps list, (in the settings) the app is still exists, but with a label "not installed" - <a href="http://i.imgur.com/q6AwFDU.jpg" rel="nofollow">image</a></p>

<p>(the app is "test1")</p>

<p>How can I completely remove the app? (the app is just a basic app from the examples templates, nothing special)
And my pc os is Linux Fedora 22 (if this matter)</p>

<p>Thanks in advance.</p>

<p><strong>UPDATE</strong>
When i'm trying to install the apk via the file manager, (on the phone), after I did build -> generate signed apk`, so I get this error - <a href="http://i.imgur.com/7DsCAKg.jpg" rel="nofollow">image</a>
(the "app not installed" message appears after I click "install")</p>

<p>And this may be helpfull:
I found some websites, that they say to try with adb (to delete some file (which need root access, (I think) so need the adb)) but I don't know how to use adb at all.. (I don't know even how to connect to my phone)</p>