Edit Still Valid. They appears to have extended it a few times.
This is a Extension of the previous Deal with $100 Costco cash card for Adding a line on T-mobile BYOD/BYOP that was valid from 7/3-7/9. I was in Costco last night trying to add some lines but we couldn't because of some complications in the rapper showed me on his computer that it's extended again today.
It probably will be extended for the next few weeks or possibly even want them more like in previous times. Even tho the Free add a line for new and current customers with 2+ lines expired on 7/6 it should be valid with the new free line deal for new customers signing up for service or customers with only 1 line and want to add another line for free.
Plus I believe it stacks with current TMO promotions that requires new lines and port in new lines. according to tmo t-force on Twitter they just said it needs to be done within the 14 day remorse period. So I guess this could be good for people looking to double dip like me with iPhone se, 11, & XS deals going on. The One Plus 7T & 8 have deals too.
Thanks and God's Blessings,
1 Peter 2:16 New Living Translation (NLT)
16 For you are free, yet you are God's slaves, so don't use your freedom as an excuse to do evil.
New Living Translation (NLT)