I recently moved, so I decided to change my cell phone number so that the area code would be local. Today I received two phone calls from collection agencies, presumably for the person who used to have my new cell phone number. I hadn’t thought about the possibility of getting someone else’s old number, but I guess there are a limited number of numbers.
According to this article, a cell phone number may only be dormant for as few as 30 days before it is reissued! Also, if the old owner was subscribing to a text-messaging service, such as news flash updates, or daily haiku poems, the new phone may start receiving them.
So my advice is to never move out of your area code so you don’t have to change your cell phone number.