I’ve got an S50 and it’s fine – yes, the GPS is a bit iffy and yes, it’s a fairly basic smartphone.
However, I can pretty much do all the browsing and app using that I want to do, when I haven’t got my Galaxy Note 5 out in the rain, dirt and gloop. I’ve used it as a sat nav a fair few times.
My mate chucked it across the pub to check it’s toughness when I first got it – I sometimes drop it onto my steel toecap boots and toe poke it into the mud when lads on site ask if it’s any good.
The screen still scratches like anything else, but it does what it says on the tin