T-Mobile USA, Deutsche Telekom AG of Germany subsidiary, announced on Wednesday it would start offering a brand new phone service called T-Mobile@Home at the end of the month.

Before some potential subscribers get a bit overexcited when they hear about the $10 monthly fee for unlimited calls, they should also keep in mind the following fact: for gaining access to the T-Mobile@Home service (which is indeed no more than $10), a T-Mobile cell phone plan is needed (its price is of about $29.99 a month), as well as a broadband Internet service (which starts at a monthly fee of $20 and can go up to $50, depending on the user’s choice).

The aforementioned services are used within the phone service system. A handset transmits the calls to the Internet through a T-Mobile router and then, the voice-over-Internet-protocol technology completes the calls.

Customers will be able to start signing the two-year service agreements on July 2.

T-Mobile is not the only company to introduce unlimited calling plans. Also this week, Virgin Mobile announced that starting next month, it would offer an unlimited calling plan at about $80 a month. Just like the other calling plans the company is currently offering, the upcoming one will be pre-paid, so there will be no need to sign any contract. However, the service doesn’t include free text messaging or e-mail; people will have to pay an additional $10 for these options.

Verizon Wireless, a Verizon Communications and Vodafone joint venture, also has a wireless service offer, bringing flat-rate, all-you-can-talk plans; the pricing starts at 99.99 dollars a month. The Nationwide Unlimited Anytime Minute Plans allows subscribers to call anyone in the United States, regardless the time of day.