Mint Mobile has one of the best referral deals around. You can get anywhere from $225 to $450 in credit when you refer up to five friends. That’s enough dough to get you at least full year on Mint’s 10 GB plan! Plus, each friend that you refer will get a $15 credit for themselves. Everyone wins. Most companies have a referral program. So, if you’ve got friends looking for a new phone plan, be sure to ask your current carrier about their referral deals. You may be able to score some credit for a new phone or to help pay your bill.