My plan includes unlimited social networking, and 500mb of data. I am on a little over a year into the contract but don't want this phone anymore. I do not want to cancel it because of cancellation charges.
ya,it's possible.
If you have other than Rogers sim card.You should unlock your mobile phone.You can unlock your iphone 4 using Remote unlocking method.It's the best way to unlock your mobile phone.If you are interested in this method visit simpleunlocking.com Here you can unlock your iphone without jailbreaking.