How is this thing as an actually phone? I use my phone a lot as an actual phone but currently have an iPhone and the wife and I talk a lot while I'm at work which has wifi. I can typically get service in certain areas at my work but not usually enough to make a call so we use iMessage. I want to know if I get the S4 will my woes continue and I won't be able to make calls/text or is the call quality and reception better? I usually have good luck with Samsung phones being high in call quality but the Note 2 didn't do so well for me. Anyone else coming from an iPhone 5 notice a difference?