Mobile phones have a lot of positive effects on friendship. For example, it’s much easier to stay in touch with friends, even if they live far away. We can send instant messages or share photos and videos anytime, which helps us feel closer. Group chats are also useful for planning events or just chatting with everyone at once. I think mobile phones help shy people too, because they can communicate more easily without feeling nervous. And if there’s an emergency, friends can quickly support each other.