My Samsung Galaxy S-4 was 'born' with KitKat, I selected this smartphone because the menus' white text on black backgrounds were easy to read (I'm visually impaired) the configuration menus were well organized and easy to locate/change. The forced Lollipop downgrade changed the landscape (and my entire phone) to an unusable state. The non-bolded black text on a white background is almost impossible to read without a magnifying glass and my contact list was all but unusable until I lucked onto the Contacts+ app, which allows me to choose a familiar white-on-black look and feel for my contact list. Only NOW can I see who I'm dialing (I don't prefer to call attention to my affliction by using voice commands). KitKat worked and worked well, to change my device's look, feel and functionality was unwarranted, unwelcome and unwanted. There's so much trash in 5.1's OS I'm surprised it didn't come with an 'Undo' button (which is sorely needed). Even the 'color reversal' and 'HUGE' font settings cannot restore my device's former functionality because it affects all icons and graphics rendering everywhere. Speaking of trash, that's just where this OS belongs. Thank God for apps, it's the only way we have to fix a broken phonecourtesy of Android. I spent 3 days after Lollipop trying to get my old usefulness back to my S-4 . . . the factory reset and deletion of my cache folder didn't help a bit. Lollipop works just fine if one can put up with its visual non-appeal, which is only apparent after being forcibly crippled by Android's meddling. We all got Screwgooled sad to say. I knew I should have considered an iPhone but I was stupid. Don't be fooled like me, thanks to Verizon I'm stuck with a (GREAT phone with a) crummy OS for the next two years. Grrrr