Yes, I think it's okay for people to have phone conversations in public spaces. Phones are important for staying in touch, and public places are meant for socializing. Sometimes, people have emergencies or urgent matters that need immediate attention. As long as they use headphones or talk quietly, it shouldn't be too disturbing. It's a common thing nowadays, and most people are used to it.

No, I don't think it's appropriate to have phone conversations in public spaces. It can be really disruptive and annoying to others who are trying to enjoy some peace and quiet. Public spaces should be places where people can relax without being disturbed by loud conversations. Plus, some conversations are private and shouldn't be overheard by strangers.

It depends on the situation. For example, having a phone conversation in a park might be fine, but doing the same in a library could be inappropriate. The nature of the conversation also matters; a casual chat might be okay, but serious discussions should be kept private. Being considerate of others and using discretion is important when deciding whether to have a phone conversation in public.