Some time ago I installed "★ Signal Booster for Android ★" to investigate a weak signal. I then uninstalled it, yet the Play Store still reports it as "Installed", even though I can't find it on the Nexus 4 anywhere in the apps drawer. Do the stars in the app title cause this behavior? I don't want this app on my phone and wish to dismiss the Play Store indication of it being installed. How to fix the discrepancy, please?