Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. CNBC Select will update as changes are made public.

Remember when flip phones were a thing? Back in the 2000s, I used to love my little Motorola Razr, and after using the Samsung Galaxy Z Flip 6 for a couple of weeks, it feels like I’ve gone back in ...