Meaning trap
hang on
wait for a short time
to wait for a moment or a short period, often while someone does something or gets something ready.

Don't mix these meanings
Same phrase, different job.
to wait for a moment or a short period, often while someone does something or gets something ready.
Hear it in context
Notice where the phrase sounds natural.
Hang on, I'll grab my keys and be right with you.
In my opinion, it's important to hang on for a few minutes if someone is late, because unexpected things can happen.
Fix the pattern
One small grammar move makes it sound right.
Not: Hang on me, I'm nearly ready.
Say: Hang on, I'm nearly ready.
This sense is just 'hang on' (= wait), with no object. 'Hang on to me' means hold onto me.
Which sounds natural?
Tap the one a native speaker would say.
'Hang on' is the casual way to ask someone to wait. 'Wait for a brief moment' is stiff.
Build natural chunks
Words that usually travel with it.
hang on + a moment
- a sec
- a minute
- a moment
- there