I just went to western Europe (Germany specifically), and spend 15 Euros for phone service there. It's simple: I just bought a SIM card at a shop (O2) and put it in my Verizon phone. I got a prepaid card that had unlimited text/calls (within Germany only), and 3GB of data, which was far more than enough for my 2 weeks there.
Cellular service is much cheaper in Europe than in the US, so you might as well take advantage of it. International calling plans for American phones are horrendously overpriced.
Of course, the downside is that I couldn't call or text anyone in the States, but who cares? That's what apps are for. I was able to talk to and message friends/family in the US using Facebook messenger and LINE. While on my hotel's free WiFi, my VoIP calls cost me nothing.
Cellular service is much cheaper in Europe than in the US, so you might as well take advantage of it. International calling plans for American phones are horrendously overpriced.
Of course, the downside is that I couldn't call or text anyone in the States, but who cares? That's what apps are for. I was able to talk to and message friends/family in the US using Facebook messenger and LINE. While on my hotel's free WiFi, my VoIP calls cost me nothing.