I also use cheap Mint Mobile plan with a 5 gig plan. Most months I don't hit the cap. But the months that I do all have two things in common: either traveling, often with the implicit assumption that I can use my phone for work, or tethering to use for work when there's a power or internet outage. Those primary causes aside, the current online universe does an awful lot of video and I've wasted an awful lot of data watching tutorial videos and how-to type stuff.
That said, the point is that if you can't watch a tutorial because it'd run over your data cap, it's problematic. So is having too trash of a phone - it's the kind of thing employers will see as a negative signal at a certain point.
Which is to say, sure, maybe you can spend under $200/mo on phones and Internet for one or two people, but realistically you're not spending under $100 without major and problematic sacrifices. And whether it's a $100 or $200, compared to housing, food, other stuff, it's not a wild expense.
That said, the point is that if you can't watch a tutorial because it'd run over your data cap, it's problematic. So is having too trash of a phone - it's the kind of thing employers will see as a negative signal at a certain point.
Which is to say, sure, maybe you can spend under $200/mo on phones and Internet for one or two people, but realistically you're not spending under $100 without major and problematic sacrifices. And whether it's a $100 or $200, compared to housing, food, other stuff, it's not a wild expense.