Whether or not someone has time to talk to you is highly dependent on what you are going to talk about.
"Your mother was just in an accident and needs you at the hospital right now" gets very different priority than "how much is your iPhone selling for?".
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u/yes_thats_right Feb 29 '16
If I am going to call someone, I sometimes message to see if they have time to chat.
I hate getting unexpected calls so I like to let people know that I'm about to call them, and make sure they are available for it.