This is my opinion , most people who join visible stay on. You only Need
4 people to make a party so, Make sure you check it constantly and if
the party creator leaves, you just join another party, or create your
own party with family member or frien...
I just left Att. Too! After you just need to install the new Visible SIM
card turn off phone then turn back on, and log into visible app and
follow the activation instructions. Everything remained on my iPhone.
Nothing was lost.