Xender Download is the fastest sharing application available for Android, iOS, and PC. It allows users to send all kinds of files for free. But if you are facing slow speed problem, there are several factors involved for that. If you are surrounded by multiple internet connections, it will lower the speed of sharing. Furthermore, you need to reduce internet connections and this can help you to increase the speed of sharing.
If you keep your both devices apart and a long distance is maintained, this may reduce the speed of sharing files. So, keep both devices closer to each other and the speed of sharing files will increase. Old hardware device is another problem for that and it will lower the speed of sharing files. You need to increase the speed of sharing files, you have to change the device and improve your hardware.