U.S. Mobile even has an Unlimited Flex plan that goes for just $15 per month when you pre-pay for 12 months. AT&T is another contender for the best unlimited phone plan deal going right now.

Lastly, Visible Wireless, powered by Verizon's network, simplifies the prepaid plan landscape by offering just two options: Visible and Visible+. Both plans include unlimited talk, text, and data, ...