I am not used to paying $300 for a phone i usually pay $100 (new every two deal) so i am looking into buying this phone from Costco or Amazon. What i am most concerned about is the warranty. When you buy from Verizon of course you get the one year guarantee for the phone and battery but what about when i buy out side Verizon? If i have problems with the phone can i still go into a store and swap it?