Well done article on CNET looks at theAT&T-Verizon price war and provides usable information.
If I am an existing customer paying a higher fee for my voice service, can I switch to the all-you-can-talk plan without being penalized?
Yes, AT&T and Verizon Wireless representatives say all you have to do is call a customer service agent to change your plan. You will not be charged any kind of fee for switching. And you will not extend your existing contract by switching to the lower cost plan.
Each of these plans will cost about $120 a month. Unlimited texting and voice is about $90 a month. And the data service is an additional $30 a month. The price of unlimited voice, text, and data from these carriers previously was about $150, because the unlimited voice service was $30 more expensive.
Are the data plans really unlimited or is there a 5 gigabyte limit?
AT&T and Verizon Wireless say their data plans are unlimited for all phone customers. The 5GB limit only applies to customers using their 3G broadband service for laptops.
Do either AT&T or Verizon Wireless allow tethering phones to laptops for Internet service? How much does this cost?
AT&T and Verizon Wireless each allow attaching phones to a laptop to get 3G wireless service. Verizon allows tethering on most devices, but not all. For smartphone customers with a voice and data plan, the tethering plan costs an additional $30 per month. For customers wanting to connect their laptops to a feature phone, the tethering plan will cost about $49.99 if you use the new plans. In either scenario, customers are subject to the 5GB limit for tethering usage with 5 cents per MB for overage.
Sprint’s Simply Everything plan costs $99.99 and includes unlimited voice, texting, and data. This is still $20 cheaper than a comparable unlimited plan for an AT&T smartphone or any Verizon phone
T-Mobile USA offers an unlimited voice, text, and data plan for $79.99 a month, which is $40 less than the new equivalent plans from AT&T for smartphone devices and Verizon Wireless