What is the difference between "in a while" and "for a while".
Hello!
What is the difference between "in a while" and "for a while"?

I can’t talk to you at the moment. Ring me back ____a while.

Could you give me more examples please?

Question

What is the difference between "in a while" and "for a while".
Hello!
What is the difference between "in a while" and "for a while"?

I can’t talk to you  at  the moment. Ring me back  ____a while.

Could you give me more examples please?

Answer

"in a while" would mean after a short period of time
"for a while" would mean for a short period of time

Example: "In a while I can talk to you for a while, but I only have 20 minutes this morning."

Answer

Ill give an example sentence:
"I haven't done this for a while now..."
For a while, for me, gives feeling that the action is going to continue its existence even though it wasn't done a lot lately. I'm thinking it's a small nuance which you should not pay much attention to.
In a while expresses something done after the specified time. 
"I'll get used to this in a while, I guess" as the other person specified

Nuances are a lot in Ingrish I feel like xd

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