One way I love to make passive income on my phone is through slidejoy ( getslidejoy.com/r/cd6XB?id=1). This app pays you 3-5 dollars a month to display ads on your home screen. I have it installed on 3 devices so I make 9-15 dollars a month for doing nothing! I have cashed out on paypal plenty of times, but you could also redeem your earning in the form of a gift card or bitcoin. You could even donate the money you make. Its a great app to make money from essentially doing nothing ! Another app I like to use is inbox dollars, you get paid to complete surveys and watch videos I've cashed out twice and I have never had a problem with it. With both of these apps you could start making passive income on your device!