I haven’t had any problems with phone reception in the European cities I’ve been to in recent years, or in the one I currently live in. I don’t live in the biggest city, but it’s still about as dense as London.
The only problem I have, is that bluetooth headphones drop out pretty often when public transit passes by.
I think my country rates in the top 5 worldwide for mobile internet speeds, though, so maybe we just have a lot more cell towers per person (or rather, fewer people per tower) than what’s normal.
edit: I was wrong, but that’s because most of the top 5 spots are filled by really small but oil-rich countries.
No, not really. I bought it to play games on the go.