I found an iPhone 4s and don't know what to do?

So i found this phone and saw that when i opened it it said "please call me, i lost my phone". Anyways it had the number so i gave it a shot and called the number. It was an older women and she said she had already gotten a new one and to just take her number off? I now don't know what to do with it. Also, the screen is so cracked it won't unlock. So if anyone would help me out it would be great! And also the phone is a verizon and i have sprint. So please help. Thnks1

Return it.

Contact me via the number on my website at www.pointphonerepair.com. I can either buy the cracked phone from you or replace it for you at the most reasonable price you will come across and you can then either use the phone or sell it for a profit. Hope this helps you.

If you want to keep, restore the phone but if it's blackmailed it can only be used as a ipod. Or just giving it back