Back in December T-Mobile unveiled Digits, a revolutionary new service that's meant to "bring the phone number into the digital age". It's been in beta testing ever since, and today the Un-carrier has announced that it will go live for all of its customers on May 31. So what can Digits do for you? Well, it lets you assign multiple phone numbers to the same device. So you no longer have to carry two phones around, one for work, one for personal use. Or you can use Digits to have the same phone number ring multiple devices - your phone, your tablet, another phone, a smartwatch, a PC - the...
Source: http://www.gsmarena.com/tmobile_digits_goes_out_of_beta_on_may_31_makes_phone_numbers_flexible-news-25245.php