Mom has a cell phone with Alltel and I decided to get on with her and make it a family plan. To cut cost I figured I would buy a phone off of ebay that was unlocked or one that worked with Alltel. We went ahead and was asking Alltel that we already had a phone and wanted to get it activated. They said no way. They told us that only way we could add a phone was to buy one from them. Is this true? BTW, what type of unlocked phones will work with Alltel?