Unfortunately, with literally thousands of different mobile devices available, we cannot possibly provide technical support for individual devices. Please refer to your specific device’s user manual or support forums.
Apple products: If you are using an Apple product (like an iPhone, iPad, or iPod), you will need to transfer your files to your computer first, and then move them to your device using iTunes. This is the way Apple makes things work! More information on using Apple devices is contained in their support system.