You can't ever read the fine print too carefully, and that is also the case with Verizon's new unlimited data plan.

The $80 unlimited plan — or, to phrase it more accurately, “unmetered” plan — that Verizon Wireless rolled out Sunday features fewer carve-outs and restrictions than comparable offerings from AT&T and Sprint, as well as one from T-Mobile, which has responded to Verizon by removing restrictions on hotspot use and video streaming.

To sum up: Verizon is offering unlimited data, talking and texting for a single line, for $80 a month. That's before taxes and fees, which typically inflate the bil.

Its fine print contains qualifications that deserve a closer look.