With Tracfone your data usage is using your minutes - so if you have a 60 minute card with triple minutes you are getting 60 minutes of talk, 60 minutes of text, and 60 mb of data. This is fine if you don't use much data - but if you don't use much data you don't really need a smartphone. There are better no-contract plans than Tracfone. Straight Talk will give you unlimited voice, unlimited text, and unlimited data for $45 a month. If you purchase one of their phones and plan at a Walmart store look on the Straight Talk box lower left corner for CDMA-V and your phone and service provider will be Verizon through Straight Talk. There are various phones and providers through Straight Talk all indicated by the code on the lower left corner of the box - GSM is usually TMobile, CDMA-V is Verizon, CDMA-S is Sprint, and LTE can be either ATT or TMobile. PLUS Straight Talk is a subsidiary of Tracfone.
And there are even better plans - I have TMobile through a phone purchased at Walmart that gives me 100 talk minutes, unlimited Text, and unlimited data with up to 5 Gb of the data at 4G or LTE (depending on the phone) all for $30 a month. Need more minutes - $10 for another 100 in the month.
Tracfone looks appealing but you can do better for less.