I am new here and decided to purchase Iphone4 tonight I use yahoo messenger with webcam a lot for international chat. I looked on both at&t and verizon page and could not find if there would be extra charges to chat with YM to foreign countries on iphone. I was hoping I can find an answer here before I see either carrier. I was planning on staying with verizon but if at&t would be better for this feature let me know. I want this feature most. Thanks for assistance.