Android sending data phone to phone

Can you find the IP address of a freinds pho开发者_开发技巧ne using their phone number?

No. A phone number has nothing to do with an IP address and that would require support from the carrier. What you could do is send the person a text message that a custom application looks for. The application could then respond with the phone's IP address. That would be the only way to translate phone number to IP address.