Apple’s timing was perfect. The new iPhone 5s hit the stores two years after I bought an iPhone 4s, entitling me to a $200 trade-in, and a painless upgrade.
But the contract on my other phone had run out a few months earlier. So I picked up an HTC One, powered by Google Inc.’s Android operating system. And I am delighted with it. Android began by aping the iPhone, but it has evolved into software so good that the flow of borrowed ideas runs both ways, with Apple adding a number of Android’s best features.