Before you send anything anywhere, you should login to PayPal and see that you have actually received the payment. If payment doesn't show up there then nothing has been received. If you have already shipped the phone then police is the only option, PayPal cannot get your phone back. Also if you send money to them all that's going happen is that they have your phone and the money you sent. Contact police. I have said this countless times on these forums, but never ever sell anything expensive and use PayPal, expensive items such as iPhones attract scammers and you are asking for trouble by using PayPal. I live in a small country and I know for a fact that I can find buyer for iPhone 7 and there is absolutely no need to involve PayPal.
