Hi guys! I purchased a Verizon iPhone 4s 16GB from Cowboom.com. Cowboom is owned by Best Buy and sells previously owned electronics. I received my iPhone 4s this morning and activated it on Verizon's network. The main reason I purchased the 4s is because it can be unlocked by Verizon. I plan on using it with a third party sim card in Israel next month. According to the representative I spoke with, the iPhone was unlocked but I will not be able to verify it until after I arrive overseas. After unlocking the iPhone 4s, I went to Apple's website to register the device using the serial number and received the following error: "We're sorry, but this is a serial number for a product that has been replaced. Please check your information and re-enter your serial number. If your information is correct, you may need to contact us". I contacted Apple and it appears as if my iPhone 4s is indeed a replaced device and does not qualify for the one year limited warranty. Despite this news, I have decided to keep the iPhone 4s because Cowboom is out of stock and I will be leaving the country soon. Since I was able to activate the phone on Verizon's network and Verizon claims to have unlocked it, do I have anything to worry about when I travel overseas? Would my serial number prevent the phone from actually being unlocked? What would you guys do in this situation? Apple has been unable to help. The representative I spoke with last said that Verizon can't even unlock the 4S:roll eyes: Thanks in advance.