I updated my Adroid 4 OS to Lollypop 5.0 and I have nothing but problems. Many of my apps, i.e., Google Play Store, Text messaging, no longer works (I say about 50% of the apps are not working; so some do work). I hate the idea of doing a factory reset because I have a lot of data on my phone that I don't want to take a chance of losing.
My Samsung Galaxy Note has not stock "play store". I connected to the play store with a web browser from my computer - https://play.google.com/store . But I can not find the APK for "play store" there to download.