If I am a prepaid costumer can I change to a monthly plan? I know my friend is on a monthly plan and she pays $30(incoming/outgoing calls weekends and after 5, unlimited text, 100 minutes). I'm paying $35 for unlimited INCOMING calls on weekends and after five only, and unlimited text. If I want the same plan that she has I have to pay $45. Is there any way to switch to her plan?