My daughter currently has an unlimited talk and text plan with cellone (who have merged with AT&T) but needs a new phone. Because AT&T does not offer such a plan she does not want to switch plans to get a new phone. I am fine with switching my own plan and don't need a new phone so I was hoping to upgrade to AT&T from cellone, get a new phone and give it to my daughter to use with her cellone plan. AT&T tells me that AT&T phones will not work with a cellone plan. Is this true? Any way I can get a new phone to use with a cellone plan?