T-Mobile Offers Free WiFi Calling

T-Mobile is offering free WiFi calling for certain subscribers in the United States.

Customers who own Android phones with the carrier's Smart WiFi app pre-installed can take advantage of this perk, so long as they've signed up for an Even More plan or an Even More Plus plan.

T-Mobile sent the following statement to GigaOM confirming this new freebie:

Starting today, T-Mobile customers can add Free Wi-Fi Calling to their rate plan -- at no additional charge -- to place calls over Wi-Fi without deducting from their allotment of minutes. This new feature is available at T-Mobile retail stores to all customers on Even More and Even More Plus Postpaid rate plans who have Wi-Fi Calling capable handsets.

Perhaps this will help soften customers who ranked T-Mobile's service as being worse than it was last year. The carrier also posted record subscriber losses for the first three months of 2011.