They already do: https://familymap.wireless.att.com/finder-att-family/welcome.htm https://familymap.wireless.att.com/finder-att-family/welcome... $9.99/month f

They already do: https://familymap.wireless.att.com/finder-att-family/welcome.htm https://familymap.wireless.att.com/finder-att-family/welcome... $9.99/month for two family members. $14.99/month for up to five.