T-Mobile+clear talkT-Mobile chose CES Week to announce three important developments, including nationwide high-definition voice capability, unlimited nationwide 4G data service without an annual contract and 4G Connect, a program that will give 200 megabytes of free data per month for two years to purchasers of certain Dell and HP computers which will come with built-in T-Mobile 4G connectivity.

“Our goal is to make sure customers have a ‘walk out working’ experience and not be constrained to Wi-Fi to have a data connection,” said T-Mobile USA CEO John Legere, in an announcement about 4G Connect issued late yesterday.

The Dell and HP devices with built-in T-Mobile connectivity include Windows 8 notebooks and ultrabooks, some of which are priced under $500. Customers who need more than 200 MB of data per month  have the option of signing up for an annual or monthly contract from T-Mobile or purchasing additional data as needed at prices starting at $10 per GB.

Unlimited data, HD voice
Beginning today, T-Mobile also is making its unlimited nationwide 4G data plan available without an annual contract requirement for $70 a month. Several carriers, including T-Mobile have been offering unlimited 4G data with a contract commitment, but T-Mobile claims to be the only carrier to offer such a service without a contract.

In an announcement of the new offering also issued late yesterday, Legere referred to T-Mobile as the “uncarrier” and said, “We’re directly confronting the frustrations of American consumers fed up with the cost, complexity and congested networks of our competitors.”

Yesterday’s announcement also revealed that T-Mobile’s current unlimited nationwide 4G data plan is “by far the most popular plan choice” among T-Mobile customers. Nearly half (46%) of new customers chose that plan in December, according to T-Mobile.

Also late yesterday, T-Mobile claimed another first, announcing that it has made high-definition voice available nationwide—something it says no other carrier has done. To get the benefits of the offering, customers will need to use certain T-Mobile 4G smartphones such as the HTC One S, Nokia Astound and Samsung Galaxy S III.

Additionally T-Mobile said it has brought 4G capability to several new metro areas, including Denver, Los Angeles, San Diego and Virginia Beach, Va.