Mac Forums

i am currently looking for a cellphone, but im not sure which to go with. first, i want to know which phone is better : samsung galaxy skyrocket orr the iphone 4. my sister is getting the iphone 4 so if i was to get it to would it be cheaper? and could we qualify for a family plan? and will it be cheaper? the iphone 5 is coming out in july so i was wondering, if i bought the iphone 4 from best buy, and the iphone 5 came out will they make me pay the difference between the two phones instead of the full price? and if i get the samsung skyrocket, when the iphone 5 comes out can i buy the iphone 5 and keep the skyrocket? which phone do you think is better? also,if i was to buy either phone, would i be able to go to at&t at there store and pay in cash? and can i pay months before hand? i have the ipod touch 4 , so if i was to get the iphone 4 would that just be a waste? also, what do they mean by the 2 year contract? is it true all you pay is 15$ for 2 years straight? but since its a contract and i have to stay with them for 2 years would i be able to buy the iphone 5 and cancel monthly payments on iphone 4 and start doing payments on iphone 5?or do i just switch the sim card so im still paying the 2 year contract fee but for the iphone 5 ?