For a limited time, T-Mobile has a buy-one-get-one-free offer on a variety of Samsung phones that include the Galaxy S9, Galaxy S9+, Galaxy S8 Active and the Galaxy Note 8.

T-Mobile says you only need to buy any of the four smartphones on an Equipment Installation Plan (EIP) and you’ll get $720 back on a second Galaxy S9, S9+, S8 Active or Note 8, but this will come your way as 24 monthly bill credits.

Related: The best T-Mobile phones in 2018

Of course, you must activate two new lines for new customers or at least one new line for existing customers to be used in the new phone, but that’s not the only pre-qualification requirement. To get a better insight into what you are getting into, hit the source link below.