Until now, Mormon missionaries have only allowed to use phone calls or video chats to reach their families on Christmas and Mother's Day. After that, they'd had to rely on email or traditional letters. They'll have an easier time staying in touch from now on, though. The Church now permits missionaries to call, text, message or video chat with their families each week on preparation day (effectively, their break), not just two times a year. They're also encouraged to get in touch on other holidays.