Currently, I'm using unlimited talk & text with 500MB
And my wife is also using same t-mobile plan but we didn't know about family plan.
How can I merge my wife's line with me?
(Actually, "Add a line" link in the lower right corner does not work. So I cannot try adding)
I hope to arrange like this,
1) Mine : Unlimited talk & text with 500MB
2) Wife's : Unlimited talk & text with Unlimited Data
Would you help me? ^^