In most European countries that I frequent, incoming calls are free to the receiver as long as the receiver is not roaming because the caller pays a premium over what it costs to call most landlines. If the call receiver is roaming internationally, then costs are there for the receiver too quite often.

[There is a push amongst some in the EU (including the minister and some bureaucrats in charge of matters in this area) to have the system become more flexible and/or even change to a more-US-style system since the studies they are relying upon indicate that the total call cost to caller+receiver would be lower. However, this won't be happening anytime soon.]