KEY POINTS
  • Verizon, AT&T, Sprint and T-Mobile all say they have unlimited data plans, but there's fine print you need to know about.
  • There's a cap on your high speed data, no matter what plan you pay for.
  • You won't pay overages, but your data will come to a crawl if you go over your limit.

Verizon, AT&T, T-Mobile and Sprint all offer "unlimited" data plans that suggest you can use as much high-speed data as you want each month.

But the truth is more complicated.