Flip phones are back in regular rotation, although today's flip phones are much more advanced than those from the early 2000s. Samsung and Motorola are leading the charge in flip phones with the Galaxy Z Flip and Razr, but only one of those phones evokes nostalgia and plays on it well.
The Motorola Razr continues to be my favorite smartphone line; with its impressive folding display and vibrant color options, it does a fantastic job of marrying the past and present. However, there's one hidden trick that you might not know about that transforms your modern Razr into a relic of the past.
