Systems and methods for file transfer by mobile user collaboration are provided. In some embodiments, a method of operation of a serving network node in a wireless communications network includes determining to perform a handover for a wireless device (14) served by the serving network node to a new serving network node. The wireless device (14) is one of multiple wireless devices (14) uploading a data file as multiple pieces to a destination network node. The method also includes sending to the new serving network node an indication of a status of the upload of the data file and handing over the wireless device (14) to the new serving network node (12). In this way, the upload of the data file may continue after the wireless device (14) is handed over.