HOw do i get a clear esn on a Sprint phone i found?

I found a sprint blackberry phone at the park and i wanted to use it since i dont have a cell phone but i dont know if i can. Ive had it for about a week and no one tried to reach it and then the battery died. Is this ok for me to do and what do i need to do to get service on it.HOw do i get a clear esn on a Sprint phone i found?
You cannot activate it. You should have returned it to the owner since Sprint blocks activating a phone that has been reported lost or stolen. They do release the ESN after a year, so if you feel like holding onto it for that long you can.HOw do i get a clear esn on a Sprint phone i found?
well if you're an honest person, you'll call sprint and find the owner, then give it back. Just because you found it, doesn't make it yours. Someone has paid a lot of money for it, ya know?