By news@appleinsider.com (AppleInsider Staff) If you fancy a smartphone upgrade, you could save up to $800 on the iPhone 13 and iPhone 13 Pro lineup when you trade in your used device. Learn more about the online process that’s both fast and easy to do.It’s the fall, and with so many smartphones coming to market it is also the prime season for a new phone ahead of the holidays. Now that everyone can take advantage of AT&T’s best deals on every iPhone, on every unlimited plan, this is a great time to upgrade or switch.For a limited time, AT&T is offering …

Source:: Apple Insider