What annoys you about computer s

1，That, after so many years of networking and Facebook and Google and damn Pokemon Go, it’s still so difficult to just quickly send a file from my computer to yours. Or from my phone to your phone.

2，That, if I’m talking to you on the phone and the call drops, we’ll both be trying to call back each other and we’ll both get busy signals. (Yes, this is a CS problem and it could get solved.)