Does China Unicom mobile phone card charge for receiving text messages in Japan?

It is free for you to receive text messages in Japan, but the premise is that you need to activate the international long distance and international roaming functions, otherwise your mobile phone will have no signal after leaving mainland China; if you activate the international long distance and international roaming functions, you You can send it via text message or China Unicom mobile phone business hall; I hope it will be helpful to you, thank you for your support and understanding!