You're not buying a second iPhone
You're buying a $30 prepaid android from wally-world or bestbuy. I have an $8 a month prepaid Moto E2 on which I run several apps and an alternate ego that I prefer not to associate with my main line. That's $30 down and $100 per year for a quarantined sandbox to play in. If I Uber'd it would be on line 2.