When it comes to cash-back credit cards, it literally pays to do your homework. Using the right cash-back card strategically can earn you hundreds of dollars a year and thousands of dollars over time.

If you're on a Galaxy Fold, consider unfolding your phone or viewing it in full screen to best optimize your experience.

The best Samsung phones are a reliable choice for any price level in the Android phone world. The breadth of the Galaxy line-up means anyone can get a good deal on great tech, although the regular ...