I currently have an iPhone 7 Plus and I want to upgrade to an iPhone 13 Pro Max. I have been with Verizon over 10 years. Are there any deals out there or am I better off buying the phone from the Apple Store? Someone told me that Verizon would give me an $600 Discount if you upgrade with them and buy my old phone back. Not sure if this accurate or not? Please let me know. Thanks.