Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3) I have a family plan with 2 iPhone 3GS. My wife ordered a 64 Gb iPhone 4s and I ordered the 32 Gb version. We want to swap phones. Will I be able to activate the 64Gb iPhone on my line? Or is it tied to the mobile number? Thank!