If you haven't heard of RingPlus, they're a Sprint MVNO that offers free phone service. There's a truly free plan which currently offers 125 minutes, 50 texts, and 15 MB of data and doesn't even require a credit card to sign up, but there are other options for free plans that require you load a certain amount of money in your account to get. There have been plans that offered up to 6000 minutes, texts, and MB every month for less than a $40 one-time fee. MMS aren't included for free, though you can disable MMS on your account so you never get charged for them, and use Google Voice/Hangouts to send free MMS over data. Some plans include a certain amount of MMS now. I will regularly update this thread with promotions they offer, so keep an eye out for high data plans if you're interested in using RingPlus. Feel free to ask any questions and I'll do my best to answer.