iMessage 无法切换成手机号发送信息
iMessage用Apple ID登录iMessage信息后，无法切换成发送方式，也就是无法切换成手机号发送信息。
而且iMessage未激活成功。
[经过版主编辑]
iPhone X, iOS 13
您好！
关于 iMessage 无法切换成手机号发送信息 此问题，您可以尝试转到iPhone设置，然后点击信息，找到“作为短信发送”选项，启用即可。
此选项的含义：iMessage信息不可用时作为普通短信发送。
目前iOS13暂不支持手动切换iMessage/普通信息发送方式，即另一个Apple用户处于联网在线状态时，iOS默认发送iMessage信息。启用此选项后，可防止iMessage长时间无法发送造成无法及时送达。
感谢！
Hello!
As for the problem that IMessage can't switch to mobile number to send messages, you can try to go to iPhone settings, click messages, find the "send as SMS" option, and then enable it.
Meaning of this option: if the IMessage message is not available, it will be sent as a normal SMS.
Currently, IOS 13 does not support manual switching of IMessage / general information sending mode, that is, when another apple user is online, IOS sends IMessage messages by default. When this option is enabled, IMessage cannot be sent for a long time, which will prevent it from being delivered in time.
Thank!