There is an iphone that i will most likely be purchasing very soon. Emailed the person and asked him some questions to confirm and waiting back. The iphone is a 4s 16gb one. Its unlocked and mentioned it could be used with any GSM Carrier. The thing is when i get the phone... i will be going back to canada. Im already here in canada but heading back to the usa for a short while to do some stuff get phone and then head back to canada. At the moment, i do not need service on the cell phone but want this unlocked phone in case i get service later on either here in canada or in mexico or when i go back to the usa. I do know if i ever use my phone in the usa... i will be going with t mobile. But in the meantime when i get the unlocked phone, will it come with a sim card or not? It says its unlocked and mentions ATT and TMobile. So baiscally i just want to use it without a service and thus it would in a way be like an ipod touch. Then later on i would get service. But don't you need a sim card just to get the phone to work with wifi and doing stuff that requires wifi? Or is a sim card not required for that? Could i download apps and use skype to talk chat and call without a sim card while on wifi? Thank you.