Ask XO: What is the most troublesome part when transferring phone photos to a computer?

What method do you use to transfer photos or files between your phone and computer? At StartupXO, we want to learn about the inconveniences experienced with different device combinations. Please tell us the devices you use, like Android and Windows, and describe the actual steps you go through among cable connection, messenger transfer, or downloading from the cloud. Where was the last stage you got stuck at when transferring recently?