Amazon’s “Prime Exclusive” phones always seemed like a tantalizing deal, because if you were already a Prime subscriber, you could save $25, $50, $100, or more on handsets from well-known manufacturers like LG and Motorola. But until now, there was always a catch, because those savings came with lock screen ads and offers that Amazon installed on its discounted phones. Starting February 6th, Amazon says it is doing away with those ads entirely.