From Walmart to AT&T and others the problem here is overchoice. Your common smart phone from Tracfone can do this. You refill it with the usual refill card or pay on their web site. This isn't the only one and it would take me hours to list them all.
I'm going to mention what I use anyway since it's been cheaper than what others use. I'm using a smart phone (nod to CNET for shopping that one) and TING.COM. For my wife and I we pay about 22 dollars a month for 2 lines. When we traveled and used the data a lot our bill went to 35 dollars for that month and then went back down to under 22 dollars the next month.
I'm looking for a prepaid smartphone that has access to the internet so I use the Uber app.
I'm interested in paying for minutes/usage upfront and do want any reoccurring bills.
Anyone have any experiences?