Meaning 1 · most common
appear unexpectedly
To appear suddenly and unexpectedly, especially when it needs attention.
Example
A: Why are you still online?
B: A problem popped up with the payment system.
Tell it apart
pop up — 2 meanings
One phrase, 2 meanings. Learn them one at a time, then test yourself.
phrasal verb2 meanings
Meaning 2
appear suddenly on screen
when a window, message or notification appears suddenly on your screen
Example
A message popped up saying my storage was full.
Turn this into speaking practice
Pick a meaning and say it out loud. Save the ones you mix up.