Hi, I recently bought a new Android Phone which runs on 2.3.6 version. There were some paid apps in my last android phone like Easy Tether Pro, Launcher 8 Pro etc. Last phone also run on same android version. I copied their apk file to new phone and installed them. But for some reason these apps that I installed manually do not show up in the Installed App list on Google Play Store. Neither I am getting any update notification for these apps. In fact when I search for Easy Tether on Play Store, it does not mention that this app is already installed on the Phone. In case of Launcher 8 Pro, if I visit the App page on Play Store, it do show that App is already installed but there is no update option. How can I fix this issue?