You don't even need that if you want to go with the phone choice. You can get a prepaid phone for $100 with prepaid cards for $10 a month that you can use on unlimited texting.
with verizon prepay you can bring your own phone or get a moto g for $100 then service is only $50/month with unlimited talk and text and 1 gig data
bro, you don't need a phone for 2 step authentication. You need to work on your communication skills and study up before you speak, cause you are really sounding so stupid.