Credit Check Question?

Hey Everyone! 

Quick question regarding the credit check when purchasing online:

- How long is the credit check and quote deposit good for?

The reason i ask is this.....I was going to sign up for service today and pick up a phone in the local at&t store. Going thru the online checkout process, it stated that I would need to put down a deposit of $108, which I have no problem with, I just won't have that money until tomorrow or friday. Once I have the money to do the deposit, will the system recognize that they've already run my credit or will it be another hard pull?

Thanks!