Hello All, Im currently on the ATT GOphone plan which is PAYG (I had to because Im an international student and had no credit whatsoever when I purchased. I since now have a credit rating!.)... and its costing me about $95-100 a month, which is WAY WAY too much.... SO, Im wondering if anyone uses the iphone with another carrier and what their monthly costs are.... If possible Id like to get it down to $50 a month... Any advice would be greatly appreciated!