What used to be true for boats is now equally true for cell phones.

The best day of your life? The day you bought your boat.
The second best day of your life? The day you sold your boat.

That kind of love/hate relationship is even fiercer when it comes to our most beloved, most bemoaned tech toy — the “smart phone.” Every time you “upgrade” from a version “3" to “4” to “5” . . . it seems that only minutes later there is a version “6.” Almost as soon as you can get out your credit card, you are the proud owner of a dodo or a dinosaur.

Cell phone companies try to tie their customers to a strict “upgrade” schedule to keep them using their older model phones for two to three years. But lately the competition between all the big name “smart phone” providers has become so intense that the “up…