Change old family plan with unlimited

[foxnews1]

I currently have the old family plan 550 with unlimited data. I have two iphones: one with unlimited data and the other with 300MB ($20).

I need more voice minutes. and on AT&T site, it allows me to change to Nation plans 700 ($60) or 1400 ($80) for first line and $10 for second phone

does changing plan risk losing my unlimited data? anyone in this situation?

 

[aneftp]

I currently have the old family plan 550 with unlimited data. I have two iphones: one with unlimited data and the other with 300MB ($20).

I need more voice minutes. and on AT&T site, it allows me to change to Nation plans 700 ($60) or 1400 ($80) for first line and $10 for second phone

does changing plan risk losing my unlimited data? anyone in this situation?

It doesn't affect ur line with unlimited data. My sister just went from the 550-700 min family plan and kept her unlimited data last year n