I went from a 10.1 inch Samsung to Nexus 7 to Nexus 4 and love the Nexus 4. It is very powerful - the fastest tablet I have tried. I used it for awhile just as a Wi-Fi 4.7" tablet - no phone plan. Now I have Straight Talk but 95% of my use is for email, news and other data type apps - mostly off Wi-Fi. The 5% percent that I use the Nexus 4 for phone calls and texting I consider a bonus that I couldn't do with my other tablets.
Nexus 7 is the fastest tablet? Huh. Thought it wasn't that powerful but great for the price. or are you talking about the Nexus 4 (which is not a tablet) but anywaysssss
I use my Nexus 4 as a media device and without any service I can last the entire day with about 4 hours 15 minutes of screen time and this is with games and music and surfing.
GrooVe IP is a good phone app for the Nexus 4 if you want to make calls, uses ur google voice number