A free program for Android, by Tech Buffers.
Smart Switch – Content Transfer is a Smart Transfer and Smart Switch app to transfer data between phones. This is a handy app that is capable of transferring content from one phone to another. The whole process is a very simple one and it only requires a Wi-Fi connection.
You can share your files by sharing the link or sending the file directly. You can copy the data or send it directly to the recipient. This app is capable of transferring photos and contacts. It is easy to use and it only requires a Wi-Fi connection to work.