For people who don't call or text a lot, Consumer Reports says there are dozens of plans that offer reasonable deals, including ones from Tracfone and Virgin Mobile. But now, even if you use your phone a lot, a prepaid plan may save you. For example, a new Boost Mobile plan offers a monthly, unlimited plan for $50 that covers minutes, texting, and Web access.

Consumer Reports says, with the right prepaid plan, you could cut your phone bill in half even if you're a heavy user.

You should be aware, with prepaid plans, you usually have to buy a new phone. While they don't necessarily cost a lot, the choices are often very limited. For instance, Tracfone's Straight Talk plan offers just three phones.

As with any phone plan, Consumer Reports says to check out the details carefully. Make sure you're able to activate the plan—that is, open the account—in your area.

Avoid any plan that charges a daily fee whether or not you use the phone. Also avoid plans with a monthly fee for a set number of minutes. You may be buying more than you need, or get in a hole if you go over.

Consumer Reports says, for now, most families are probably better off with a traditional contract plan. That's the kind where you can add another line for as little as $10 a month.

Still, if you're getting phone and texting service just for yourself, Consumer Reports says prepaid plans are worth considering.

If you're thinking of making a switch to a prepaid service, Consumer Reports says you should do it when your wireless contract is about over. Otherwise you could be charged for terminating your plan early.