Digital Trends – Debuting on the Android-powered myTouch 4G Slide and Samsung Exhibit 4G, T-Mobile is partnering with Cequint to provide customers with Name ID for a fee of $3.99 a month. Customers can try out the service for free over a 10-day trial as well. When a call comes into the T-Mobile phone, the number is scanned within a database of phone numbers validated by operators. The service then displays the name, city and state of the caller as well as the phone number.