<human>: I'm a finance noob. When my fiance and I met I had a shitty phone and plan so he added me to his contract under a family plan. I thought my previous shitty phone bill was paid off. And I wasn't receiving any notices or alerts on my personal account so I moved in with my (now) husband and got married. Last year Dec 5, 2014 my mom received a bill for a little under $300 from Sprint. We were going to pay it immediately but I had an extreme reaction to an antibiotic, and that bill payment got put in the back burner. I found the bill a couple of minutes ago and my husband just paid it. Will this bill affect my or my husbands credit? Is there any app I could use to find out  my score for free?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Unpaid phone bill for a little under $300, from two years ago. My husband paid it will my husband and I get bad credit from this? Is there any credit app I can use to find out my score for free?