I use a Nexus 4 and an iPhone 5 side-by-side. I also have a Lumia 521 and I swap the SIM card between that and the iPhone 5 whenever I feel like it (2nd line). I work in IT, and occasionally clients would ask me how to do something on their phones. I was an Android user, so if they had an iPhone or a WP I didn't know, and would have to feel my way through (come to think of it I never had a client with a WP :concern
. I decided it would be valuable for me to become familiar with the other OS's so I scoured Craigslist for deals until I found devices at good prices. Since the Nexus 4 is my primary device, any apps that need to be purchased I buy on the Play Store. I use Gmail for mail and contacts, which easily syncs with all my devices.
I'm curious why people own more than one phone. A phone of one OS and tablet of another, I can understand. But you can only talk on one phone at a time. Aren't you also having to pay for a plan for each phone as well? I don't understand the appeal (feel free to educate me).
Obviously you can have 1 active SIM card and swap it between phones, and only pay for 1 line. I actually use 2 lines with 3 devices. As I mentioned above the iPhone 5 and the Lumia 521 are my 2nd devices. For my primary line I use my Nexus 4 with T-Mobile's $30 5GB plan, mainly for the data. I hardly ever talk on the phone so 100 minutes/month is almost always more than enough for me. My 2nd line is Net10 using AT&T service. T-Mobile is spotty in a few places where I live, but AT&T service is very good. With both T-Mobile & AT&T phones in my pocket I'm always covered. And, since the Net10 line has unlimited minutes, if I do need to have a long conversation I use that line. I buy refill cards at prices quite a bit below face value. I usually pay <$60 month for both.