ESN question

I sold my LG Rumor on E-bay. I forgot to check ESN before mailing it, (I know, I know dummy me) I have a past due balance on the account will this make the ESN show bad? I will be paying that balance first thing Wednesday morning, hopefully before the buyer recieves the phone!!

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I'm not sure if Sprint has the ESN's connected to accounts or phones or both. If they're only connected to the phone then you account being past due shouldn't affect it.

If you have a past due amount, your ESN is STILL attached to your account, therefore it cannot be activated, UNLESS you switched ESNs,this means you activated another ESN to your existing number or cancelled your account.