Questions about a phone call from a recruiter

I received an email from a recruiter saying she wanted to call me just for a 10-30 min phone conversation. I applied to a huge tech company so I'm really nervous. Do you think this phone conversation is going to be an actual interview or just a little chat so he'll get to know me a little better?

Tbh, I'm shocked that I got an email back. I completely forgot that I even applied to this company. I don't want to mess this chance up.

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